commit 5e904971a7eea04a7630a986ecfd8f89d1c25d4e
Author: Trey Dockendorf <tdockendorf@osc.edu>
Date:   Wed Feb 12 11:07:45 2020 -0500

    Initial commit

diff --git a/.circleci/config.yml b/.circleci/config.yml
new file mode 100644
index 0000000..02b0328
--- /dev/null
+++ b/.circleci/config.yml
@@ -0,0 +1,96 @@
+---
+version: 2.1
+
+orbs:
+  prometheus: prometheus/prometheus@0.4.0
+
+executors:
+  # Whenever the Go version is updated here, .promu.yml should
+  # also be updated.
+  golang:
+    docker:
+    - image: circleci/golang:1.13
+
+jobs:
+  test:
+    executor: golang
+    steps:
+    - prometheus/setup_environment
+    - run: make
+    - prometheus/store_artifact:
+        file: cgroup_exporter
+  build:
+    machine:
+      image: ubuntu-1604:201903-01
+    steps:
+    - checkout
+    - run: make promu
+    - run: promu crossbuild -v
+    - persist_to_workspace:
+        root: .
+        paths:
+        - .build
+    - store_artifacts:
+        path: .build
+        destination: /build
+    - run: 
+        command: |
+          if [ -n "$CIRCLE_TAG" ]; then
+            make docker DOCKER_IMAGE_TAG=$CIRCLE_TAG
+          else
+            make docker
+          fi
+  publish_master:
+    executor: golang
+    steps:
+    - prometheus/setup_build_environment
+    - prometheus/publish_images:
+        login_variable: DOCKER_LOGIN
+        organization: treydock
+        password_variable: DOCKER_PASSWORD
+        registry: docker.io
+  publish_release:
+    executor: golang
+    steps:
+    - prometheus/setup_build_environment
+    - run: promu crossbuild tarballs
+    - run: promu checksum .tarballs
+    - run: promu release .tarballs
+    - store_artifacts:
+        destination: releases
+        path: .tarballs
+    - prometheus/publish_release_images:
+        login_variable: DOCKER_LOGIN
+        organization: treydock
+        password_variable: DOCKER_PASSWORD
+        registry: docker.io
+workflows:
+  version: 2
+  cgroup_exporter:
+    jobs:
+    - test:
+        filters:
+          tags:
+            only: /.*/
+    - build:
+        filters:
+          tags:
+            only: /.*/
+    - publish_master:
+        context: org-context
+        requires:
+        - test
+        - build
+        filters:
+          branches:
+            only: master
+    - publish_release:
+        context: org-context
+        requires:
+        - test
+        - build
+        filters:
+          tags:
+            only: /^v([0-9]).*/
+          branches:
+            ignore: /.*/
diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..73fdfea
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,21 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+
+[*.go]
+indent_size = 4
+indent_style = tab
+
+# Tab indentation (no size specified)
+[Makefile]
+indent_style = tab
+
+[{*.md,*.yaml,*.yml}]
+indent_style = space
+indent_size = 2
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1b765f3
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+/.tarballs
+/.build
+/cgroup_exporter
diff --git a/.promu.yml b/.promu.yml
new file mode 100644
index 0000000..c189c82
--- /dev/null
+++ b/.promu.yml
@@ -0,0 +1,34 @@
+go:
+  version: 1.13
+  cgo: true
+repository:
+    path: github.com/treydock/cgroup_exporter
+build:
+    binaries:
+        - name: cgroup_exporter
+          path: .
+    flags: -a -tags netgo
+    ldflags: |
+        -extldflags "-static"
+        -X github.com/prometheus/common/version.Version={{.Version}}
+        -X github.com/prometheus/common/version.Revision={{.Revision}}
+        -X github.com/prometheus/common/version.Branch={{.Branch}}
+        -X github.com/prometheus/common/version.BuildUser={{user}}@{{host}}
+        -X github.com/prometheus/common/version.BuildDate={{date "20060102-15:04:05"}}
+tarball:
+    files:
+        - LICENSE
+        - CHANGELOG.md
+crossbuild:
+    platforms:
+        - linux/amd64
+        - linux/386
+        - linux/arm
+        - linux/arm64
+        - linux/mips
+        - linux/mipsle
+        - linux/mips64
+        - linux/mips64le
+        - linux/ppc64
+        - linux/ppc64le
+        - linux/s390x
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..a5253ed
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,10 @@
+FROM golang:1.13 AS builder
+RUN mkdir /build
+ADD . /build/
+WORKDIR /build
+RUN make build
+
+FROM scratch
+WORKDIR /
+COPY --from=builder /build/cgroup_exporter /cgroup_exporter
+ENTRYPOINT ["/cgroup_exporter"]
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..23e30cf
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,7 @@
+# Needs to be defined before including Makefile.common to auto-generate targets
+DOCKER_ARCHS ?= amd64 armv7 arm64 ppc64le s390x
+DOCKER_REPO	 ?= treydock
+
+include Makefile.common
+
+DOCKER_IMAGE_NAME ?= check_mount_exporter
diff --git a/Makefile.common b/Makefile.common
new file mode 100644
index 0000000..066866e
--- /dev/null
+++ b/Makefile.common
@@ -0,0 +1,277 @@
+# Copyright 2018 The Prometheus Authors
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+# A common Makefile that includes rules to be reused in different prometheus projects.
+# !!! Open PRs only against the prometheus/prometheus/Makefile.common repository!
+
+# Example usage :
+# Create the main Makefile in the root project directory.
+# include Makefile.common
+# customTarget:
+# 	@echo ">> Running customTarget"
+#
+
+# Ensure GOBIN is not set during build so that promu is installed to the correct path
+unexport GOBIN
+
+GO           ?= go
+GOFMT        ?= $(GO)fmt
+FIRST_GOPATH := $(firstword $(subst :, ,$(shell $(GO) env GOPATH)))
+GOOPTS       ?=
+GOHOSTOS     ?= $(shell $(GO) env GOHOSTOS)
+GOHOSTARCH   ?= $(shell $(GO) env GOHOSTARCH)
+
+GO_VERSION        ?= $(shell $(GO) version)
+GO_VERSION_NUMBER ?= $(word 3, $(GO_VERSION))
+PRE_GO_111        ?= $(shell echo $(GO_VERSION_NUMBER) | grep -E 'go1\.(10|[0-9])\.')
+
+GOVENDOR :=
+GO111MODULE :=
+ifeq (, $(PRE_GO_111))
+	ifneq (,$(wildcard go.mod))
+		# Enforce Go modules support just in case the directory is inside GOPATH (and for Travis CI).
+		GO111MODULE := on
+
+		ifneq (,$(wildcard vendor))
+			# Always use the local vendor/ directory to satisfy the dependencies.
+			GOOPTS := $(GOOPTS) -mod=vendor
+		endif
+	endif
+else
+	ifneq (,$(wildcard go.mod))
+		ifneq (,$(wildcard vendor))
+$(warning This repository requires Go >= 1.11 because of Go modules)
+$(warning Some recipes may not work as expected as the current Go runtime is '$(GO_VERSION_NUMBER)')
+		endif
+	else
+		# This repository isn't using Go modules (yet).
+		GOVENDOR := $(FIRST_GOPATH)/bin/govendor
+	endif
+endif
+PROMU        := $(FIRST_GOPATH)/bin/promu
+pkgs          = ./...
+
+ifeq (arm, $(GOHOSTARCH))
+	GOHOSTARM ?= $(shell GOARM= $(GO) env GOARM)
+	GO_BUILD_PLATFORM ?= $(GOHOSTOS)-$(GOHOSTARCH)v$(GOHOSTARM)
+else
+	GO_BUILD_PLATFORM ?= $(GOHOSTOS)-$(GOHOSTARCH)
+endif
+
+PROMU_VERSION ?= 0.5.0
+PROMU_URL     := https://github.com/prometheus/promu/releases/download/v$(PROMU_VERSION)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM).tar.gz
+
+GOLANGCI_LINT :=
+GOLANGCI_LINT_OPTS ?=
+GOLANGCI_LINT_VERSION ?= v1.18.0
+# golangci-lint only supports linux, darwin and windows platforms on i386/amd64.
+# windows isn't included here because of the path separator being different.
+ifeq ($(GOHOSTOS),$(filter $(GOHOSTOS),linux darwin))
+	ifeq ($(GOHOSTARCH),$(filter $(GOHOSTARCH),amd64 i386))
+		GOLANGCI_LINT := $(FIRST_GOPATH)/bin/golangci-lint
+	endif
+endif
+
+PREFIX                  ?= $(shell pwd)
+BIN_DIR                 ?= $(shell pwd)
+DOCKER_IMAGE_TAG        ?= $(subst /,-,$(shell git rev-parse --abbrev-ref HEAD))
+DOCKERFILE_PATH         ?= ./Dockerfile
+DOCKERBUILD_CONTEXT     ?= ./
+DOCKER_REPO             ?= prom
+
+DOCKER_ARCHS            ?= amd64
+
+BUILD_DOCKER_ARCHS = $(addprefix common-docker-,$(DOCKER_ARCHS))
+PUBLISH_DOCKER_ARCHS = $(addprefix common-docker-publish-,$(DOCKER_ARCHS))
+TAG_DOCKER_ARCHS = $(addprefix common-docker-tag-latest-,$(DOCKER_ARCHS))
+
+ifeq ($(GOHOSTARCH),amd64)
+        ifeq ($(GOHOSTOS),$(filter $(GOHOSTOS),linux freebsd darwin windows))
+                # Only supported on amd64
+                test-flags := -race
+        endif
+endif
+
+# This rule is used to forward a target like "build" to "common-build".  This
+# allows a new "build" target to be defined in a Makefile which includes this
+# one and override "common-build" without override warnings.
+%: common-% ;
+
+.PHONY: common-all
+common-all: precheck style check_license lint unused build test
+
+.PHONY: common-style
+common-style:
+	@echo ">> checking code style"
+	@fmtRes=$$($(GOFMT) -d $$(find . -path ./vendor -prune -o -name '*.go' -print)); \
+	if [ -n "$${fmtRes}" ]; then \
+		echo "gofmt checking failed!"; echo "$${fmtRes}"; echo; \
+		echo "Please ensure you are using $$($(GO) version) for formatting code."; \
+		exit 1; \
+	fi
+
+.PHONY: common-check_license
+common-check_license:
+	@echo ">> checking license header"
+	@licRes=$$(for file in $$(find . -type f -iname '*.go' ! -path './vendor/*') ; do \
+               awk 'NR<=3' $$file | grep -Eq "(Copyright|generated|GENERATED)" || echo $$file; \
+       done); \
+       if [ -n "$${licRes}" ]; then \
+               echo "license header checking failed:"; echo "$${licRes}"; \
+               exit 1; \
+       fi
+
+.PHONY: common-deps
+common-deps:
+	@echo ">> getting dependencies"
+ifdef GO111MODULE
+	GO111MODULE=$(GO111MODULE) $(GO) mod download
+else
+	$(GO) get $(GOOPTS) -t ./...
+endif
+
+.PHONY: common-test-short
+common-test-short:
+	@echo ">> running short tests"
+	GO111MODULE=$(GO111MODULE) $(GO) test -short $(GOOPTS) $(pkgs)
+
+.PHONY: common-test
+common-test:
+	@echo ">> running all tests"
+	GO111MODULE=$(GO111MODULE) $(GO) test $(test-flags) $(GOOPTS) $(pkgs)
+
+.PHONY: common-format
+common-format:
+	@echo ">> formatting code"
+	GO111MODULE=$(GO111MODULE) $(GO) fmt $(pkgs)
+
+.PHONY: common-vet
+common-vet:
+	@echo ">> vetting code"
+	GO111MODULE=$(GO111MODULE) $(GO) vet $(GOOPTS) $(pkgs)
+
+.PHONY: common-lint
+common-lint: $(GOLANGCI_LINT)
+ifdef GOLANGCI_LINT
+	@echo ">> running golangci-lint"
+ifdef GO111MODULE
+# 'go list' needs to be executed before staticcheck to prepopulate the modules cache.
+# Otherwise staticcheck might fail randomly for some reason not yet explained.
+	GO111MODULE=$(GO111MODULE) $(GO) list -e -compiled -test=true -export=false -deps=true -find=false -tags= -- ./... > /dev/null
+	GO111MODULE=$(GO111MODULE) $(GOLANGCI_LINT) run $(GOLANGCI_LINT_OPTS) $(pkgs)
+else
+	$(GOLANGCI_LINT) run $(pkgs)
+endif
+endif
+
+# For backward-compatibility.
+.PHONY: common-staticcheck
+common-staticcheck: lint
+
+.PHONY: common-unused
+common-unused: $(GOVENDOR)
+ifdef GOVENDOR
+	@echo ">> running check for unused packages"
+	@$(GOVENDOR) list +unused | grep . && exit 1 || echo 'No unused packages'
+else
+ifdef GO111MODULE
+	@echo ">> running check for unused/missing packages in go.mod"
+	GO111MODULE=$(GO111MODULE) $(GO) mod tidy
+ifeq (,$(wildcard vendor))
+	@git diff --exit-code -- go.sum go.mod
+else
+	@echo ">> running check for unused packages in vendor/"
+	GO111MODULE=$(GO111MODULE) $(GO) mod vendor
+	@git diff --exit-code -- go.sum go.mod vendor/
+endif
+endif
+endif
+
+.PHONY: common-build
+common-build: promu
+	@echo ">> building binaries"
+	GO111MODULE=$(GO111MODULE) $(PROMU) build --prefix $(PREFIX) $(PROMU_BINARIES)
+
+.PHONY: common-tarball
+common-tarball: promu
+	@echo ">> building release tarball"
+	$(PROMU) tarball --prefix $(PREFIX) $(BIN_DIR)
+
+.PHONY: common-docker $(BUILD_DOCKER_ARCHS)
+common-docker: $(BUILD_DOCKER_ARCHS)
+$(BUILD_DOCKER_ARCHS): common-docker-%:
+	docker build -t "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:$(DOCKER_IMAGE_TAG)" \
+		-f $(DOCKERFILE_PATH) \
+		--build-arg ARCH="$*" \
+		--build-arg OS="linux" \
+		$(DOCKERBUILD_CONTEXT)
+
+.PHONY: common-docker-publish $(PUBLISH_DOCKER_ARCHS)
+common-docker-publish: $(PUBLISH_DOCKER_ARCHS)
+$(PUBLISH_DOCKER_ARCHS): common-docker-publish-%:
+	docker push "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:$(DOCKER_IMAGE_TAG)"
+
+.PHONY: common-docker-tag-latest $(TAG_DOCKER_ARCHS)
+common-docker-tag-latest: $(TAG_DOCKER_ARCHS)
+$(TAG_DOCKER_ARCHS): common-docker-tag-latest-%:
+	docker tag "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:$(DOCKER_IMAGE_TAG)" "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:latest"
+
+.PHONY: common-docker-manifest
+common-docker-manifest:
+	DOCKER_CLI_EXPERIMENTAL=enabled docker manifest create -a "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_TAG)" $(foreach ARCH,$(DOCKER_ARCHS),$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$(ARCH):$(DOCKER_IMAGE_TAG))
+	DOCKER_CLI_EXPERIMENTAL=enabled docker manifest push "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_TAG)"
+
+.PHONY: promu
+promu: $(PROMU)
+
+$(PROMU):
+	$(eval PROMU_TMP := $(shell mktemp -d))
+	curl -s -L $(PROMU_URL) | tar -xvzf - -C $(PROMU_TMP)
+	mkdir -p $(FIRST_GOPATH)/bin
+	cp $(PROMU_TMP)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM)/promu $(FIRST_GOPATH)/bin/promu
+	rm -r $(PROMU_TMP)
+
+.PHONY: proto
+proto:
+	@echo ">> generating code from proto files"
+	@./scripts/genproto.sh
+
+ifdef GOLANGCI_LINT
+$(GOLANGCI_LINT):
+	mkdir -p $(FIRST_GOPATH)/bin
+	curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/$(GOLANGCI_LINT_VERSION)/install.sh \
+		| sed -e '/install -d/d' \
+		| sh -s -- -b $(FIRST_GOPATH)/bin $(GOLANGCI_LINT_VERSION)
+endif
+
+ifdef GOVENDOR
+.PHONY: $(GOVENDOR)
+$(GOVENDOR):
+	GOOS= GOARCH= $(GO) get -u github.com/kardianos/govendor
+endif
+
+.PHONY: precheck
+precheck::
+
+define PRECHECK_COMMAND_template =
+precheck:: $(1)_precheck
+
+PRECHECK_COMMAND_$(1) ?= $(1) $$(strip $$(PRECHECK_OPTIONS_$(1)))
+.PHONY: $(1)_precheck
+$(1)_precheck:
+	@if ! $$(PRECHECK_COMMAND_$(1)) 1>/dev/null 2>&1; then \
+		echo "Execution of '$$(PRECHECK_COMMAND_$(1))' command failed. Is $(1) installed?"; \
+		exit 1; \
+	fi
+endef
diff --git a/cgroup_exporter.go b/cgroup_exporter.go
new file mode 100644
index 0000000..4040aac
--- /dev/null
+++ b/cgroup_exporter.go
@@ -0,0 +1,259 @@
+// Copyright 2020 Trey Dockendorf
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+
+	"github.com/containerd/cgroups"
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+	"github.com/prometheus/common/log"
+	"github.com/prometheus/common/version"
+	"gopkg.in/alecthomas/kingpin.v2"
+)
+
+const (
+	namespace = "cgroup"
+)
+
+var (
+	defCgroupRoot          = "/sys/fs/cgroup"
+	configPaths            = kingpin.Flag("config.paths", "Comma separated list of cgroup paths to check, eg /users.slice,/system.slice,/slurm").Required().String()
+	listenAddress          = kingpin.Flag("web.listen-address", "Address to listen on for web interface and telemetry.").Default(":9304").String()
+	disableExporterMetrics = kingpin.Flag("web.disable-exporter-metrics", "Exclude metrics about the exporter (promhttp_*, process_*, go_*)").Default("false").Bool()
+	cgroupRoot             = kingpin.Flag("path.cgroup.root", "Root path to cgroup fs").Default(defCgroupRoot).String()
+)
+
+type CgroupMetric struct {
+	name        string
+	cpuUser     float64
+	cpuSystem   float64
+	cpuTotal    float64
+	cpus        int
+	memoryUsed  float64
+	memoryTotal float64
+}
+
+type Exporter struct {
+	paths       []string
+	cpuUser     *prometheus.Desc
+	cpuSystem   *prometheus.Desc
+	cpuTotal    *prometheus.Desc
+	cpus        *prometheus.Desc
+	memoryUsed  *prometheus.Desc
+	memoryTotal *prometheus.Desc
+	success     *prometheus.Desc
+}
+
+func fileExists(filename string) bool {
+	info, err := os.Stat(filename)
+	if os.IsNotExist(err) {
+		return false
+	}
+	return !info.IsDir()
+}
+
+func sliceContains(slice []string, str string) bool {
+	for _, s := range slice {
+		if str == s {
+			return true
+		}
+	}
+	return false
+}
+
+func subsystem() ([]cgroups.Subsystem, error) {
+	s := []cgroups.Subsystem{
+		cgroups.NewCpuacct(*cgroupRoot),
+		cgroups.NewMemory(*cgroupRoot),
+	}
+	return s, nil
+}
+
+func parseCpuSet(cpuset string) (int, error) {
+	var cpus int
+	if cpuset == "" {
+		return 0, nil
+	}
+	ranges := strings.Split(cpuset, ",")
+	for _, r := range ranges {
+		boundaries := strings.Split(r, "-")
+		if len(boundaries) == 1 {
+			cpus++
+		} else if len(boundaries) == 2 {
+			start, err := strconv.Atoi(boundaries[0])
+			if err != nil {
+				return 0, err
+			}
+			end, err := strconv.Atoi(boundaries[1])
+			if err != nil {
+				return 0, err
+			}
+			for e := start; e <= end; e++ {
+				cpus++
+			}
+		}
+	}
+	return cpus, nil
+}
+
+func NewExporter(paths []string) *Exporter {
+	return &Exporter{
+		paths: paths,
+		cpuUser: prometheus.NewDesc(prometheus.BuildFQName(namespace, "cpu", "user_seconds"),
+			"Cumalitive CPU user seconds for cgroup", []string{"cgroup"}, nil),
+		cpuSystem: prometheus.NewDesc(prometheus.BuildFQName(namespace, "cpu", "kernel_seconds"),
+			"Cumalitive CPU kernel seconds for cgroup", []string{"cgroup"}, nil),
+		cpuTotal: prometheus.NewDesc(prometheus.BuildFQName(namespace, "cpu", "total_seconds"),
+			"Cumalitive CPU total seconds for cgroup", []string{"cgroup"}, nil),
+		cpus: prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "cpus"),
+			"Number of CPUs in the cgroup", []string{"cgroup"}, nil),
+		memoryUsed: prometheus.NewDesc(prometheus.BuildFQName(namespace, "memory", "used_bytes"),
+			"Memory used in bytes", []string{"cgroup"}, nil),
+		memoryTotal: prometheus.NewDesc(prometheus.BuildFQName(namespace, "memory", "total_bytes"),
+			"Memory total given to cgroup in bytes", []string{"cgroup"}, nil),
+		success: prometheus.NewDesc(prometheus.BuildFQName(namespace, "exporter", "success"),
+			"Exporter status, 1=successful 0=errors", nil, nil),
+	}
+}
+
+func (e *Exporter) collect() ([]CgroupMetric, error) {
+	var names []string
+	var metrics []CgroupMetric
+	for _, path := range e.paths {
+		control, err := cgroups.Load(subsystem, cgroups.StaticPath(path))
+		if err != nil {
+			log.Errorf("Error loading cgroup subsystem path %s: %s", path, err.Error())
+			return nil, err
+		}
+		processes, err := control.Processes(cgroups.Cpuacct, true)
+		if err != nil {
+			log.Errorf("Error loading cgroup processes for path %s: %s", path, err.Error())
+			return nil, err
+		}
+		for _, p := range processes {
+			cpuacctPath := filepath.Join(*cgroupRoot, "cpuacct")
+			name := strings.TrimPrefix(p.Path, cpuacctPath)
+			name = strings.TrimSuffix(name, "/")
+			if sliceContains(names, name) {
+				continue
+			}
+			names = append(names, name)
+			metric := CgroupMetric{name: name}
+			ctrl, err := cgroups.Load(subsystem, func(subsystem cgroups.Name) (string, error) {
+				return name, nil
+			})
+			if err != nil {
+				log.Errorf("Failed to load cgroups for %s: %s", name, err.Error())
+				return nil, err
+			}
+			stats, _ := ctrl.Stat(cgroups.IgnoreNotExist)
+			metric.cpuUser = float64(stats.CPU.Usage.User) / 1000000000.0
+			metric.cpuSystem = float64(stats.CPU.Usage.Kernel) / 1000000000.0
+			metric.cpuTotal = float64(stats.CPU.Usage.Total) / 1000000000.0
+			metric.memoryUsed = float64(stats.Memory.Usage.Usage)
+			metric.memoryTotal = float64(stats.Memory.Usage.Limit)
+			cpusData, _ := ioutil.ReadFile(fmt.Sprintf("/sys/fs/cgroup/cpuset%s/cpuset.cpus", name))
+			cpus, err := parseCpuSet(string(cpusData))
+			if err != nil {
+				log.Errorf("Error parsing cpu set %s", err.Error())
+			} else {
+				metric.cpus = cpus
+			}
+			metrics = append(metrics, metric)
+		}
+	}
+
+	return metrics, nil
+}
+
+func (e *Exporter) Describe(ch chan<- *prometheus.Desc) {
+	ch <- e.cpuUser
+	ch <- e.cpuSystem
+	ch <- e.cpuTotal
+	ch <- e.cpus
+	ch <- e.memoryUsed
+	ch <- e.memoryTotal
+	ch <- e.success
+}
+
+func (e *Exporter) Collect(ch chan<- prometheus.Metric) {
+	metrics, err := e.collect()
+	if err != nil {
+		log.Errorf("Exporter error: %s", err.Error())
+		ch <- prometheus.MustNewConstMetric(e.success, prometheus.GaugeValue, 0)
+	} else {
+		ch <- prometheus.MustNewConstMetric(e.success, prometheus.GaugeValue, 1)
+	}
+	for _, m := range metrics {
+		ch <- prometheus.MustNewConstMetric(e.cpuUser, prometheus.GaugeValue, m.cpuUser, m.name)
+		ch <- prometheus.MustNewConstMetric(e.cpuSystem, prometheus.GaugeValue, m.cpuSystem, m.name)
+		ch <- prometheus.MustNewConstMetric(e.cpuTotal, prometheus.GaugeValue, m.cpuTotal, m.name)
+		ch <- prometheus.MustNewConstMetric(e.cpus, prometheus.GaugeValue, float64(m.cpus), m.name)
+		ch <- prometheus.MustNewConstMetric(e.memoryUsed, prometheus.GaugeValue, m.memoryUsed, m.name)
+		ch <- prometheus.MustNewConstMetric(e.memoryTotal, prometheus.GaugeValue, m.memoryTotal, m.name)
+	}
+}
+
+func metricsHandler() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		registry := prometheus.NewRegistry()
+
+		paths := strings.Split(*configPaths, ",")
+
+		exporter := NewExporter(paths)
+		registry.MustRegister(exporter)
+
+		gatherers := prometheus.Gatherers{registry}
+		if !*disableExporterMetrics {
+			gatherers = append(gatherers, prometheus.DefaultGatherer)
+		}
+
+		// Delegate http serving to Prometheus client library, which will call collector.Collect.
+		h := promhttp.HandlerFor(gatherers, promhttp.HandlerOpts{})
+		h.ServeHTTP(w, r)
+	}
+}
+
+func main() {
+	metricsEndpoint := "/metrics"
+	log.AddFlags(kingpin.CommandLine)
+	kingpin.Version(version.Print("cgroup_exporter"))
+	kingpin.HelpFlag.Short('h')
+	kingpin.Parse()
+
+	log.Infoln("Starting cgroup_exporter", version.Info())
+	log.Infoln("Build context", version.BuildContext())
+	log.Infoln("Starting Server:", *listenAddress)
+
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		//nolint:errcheck
+		w.Write([]byte(`<html>
+             <head><title>cgroup Exporter</title></head>
+             <body>
+             <h1>cgroup Exporter</h1>
+             <p><a href='` + metricsEndpoint + `'>Metrics</a></p>
+             </body>
+             </html>`))
+	})
+	http.Handle(metricsEndpoint, metricsHandler())
+	log.Fatal(http.ListenAndServe(*listenAddress, nil))
+}
diff --git a/cgroup_exporter_test.go b/cgroup_exporter_test.go
new file mode 100644
index 0000000..ca4eb3a
--- /dev/null
+++ b/cgroup_exporter_test.go
@@ -0,0 +1,65 @@
+package main
+
+import (
+	kingpin "gopkg.in/alecthomas/kingpin.v2"
+	"path/filepath"
+	"runtime"
+	"testing"
+)
+
+func TestParseCpuSet(t *testing.T) {
+	if cpus, err := parseCpuSet("0-2"); err != nil {
+		t.Errorf("Unexpected error: %s", err.Error())
+	} else if cpus != 3 {
+		t.Errorf("Unexpected cpus, expected 3 got %d", cpus)
+	}
+	if cpus, err := parseCpuSet("0-1,4-5,8-9"); err != nil {
+		t.Errorf("Unexpected error: %s", err.Error())
+	} else if cpus != 6 {
+		t.Errorf("Unexpected cpus, expected 6 got %d", cpus)
+	}
+	if cpus, err := parseCpuSet("1,3,5,7"); err != nil {
+		t.Errorf("Unexpected error: %s", err.Error())
+	} else if cpus != 4 {
+		t.Errorf("Unexpected cpus, expected 4 got %d", cpus)
+	}
+}
+
+func TestCollectUserSlice(t *testing.T) {
+	if _, err := kingpin.CommandLine.Parse([]string{"--config.paths=/user.slice"}); err != nil {
+		t.Fatal(err)
+	}
+	_, filename, _, _ := runtime.Caller(0)
+	dir := filepath.Dir(filename)
+	fixture := filepath.Join(dir, "test")
+	cgroupRoot = &fixture
+
+	exporter := NewExporter([]string{"/user.slice"})
+	metrics, err := exporter.collect()
+	if err != nil {
+		t.Errorf("Unexpected error: %s", err.Error())
+		return
+	}
+	if val := len(metrics); val != 1 {
+		t.Errorf("Unexpected number of metrics, got %d expected 1", val)
+		return
+	}
+	if val := metrics[0].cpuUser; val != 0.41 {
+		t.Errorf("Unexpected value for cpuUser, got %v", val)
+	}
+	if val := metrics[0].cpuSystem; val != 0.39 {
+		t.Errorf("Unexpected value for cpuSystem, got %v", val)
+	}
+	if val := metrics[0].cpuTotal; val != 0.831825022 {
+		t.Errorf("Unexpected value for cpuTotal, got %v", val)
+	}
+	if val := metrics[0].cpus; val != 0 {
+		t.Errorf("Unexpected value for cpus, got %v", val)
+	}
+	if val := metrics[0].memoryUsed; val != 8081408 {
+		t.Errorf("Unexpected value for memoryUsed, got %v", val)
+	}
+	if val := metrics[0].memoryTotal; val != 68719476736 {
+		t.Errorf("Unexpected value for memoryTotal, got %v", val)
+	}
+}
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..2c66b2c
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,10 @@
+module github.com/treydock/cgroup_exporter
+
+go 1.13
+
+require (
+	github.com/containerd/cgroups v0.0.0-20200204152634-780d21166089
+	github.com/prometheus/client_golang v1.4.1
+	github.com/prometheus/common v0.9.1
+	gopkg.in/alecthomas/kingpin.v2 v2.2.6
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..8361ac0
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,118 @@
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+github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 h1:JYp7IbQjafoB+tBA3gMyHYHrpOtNuDiK/uB5uXxq5wM=
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diff --git a/test/cpuacct/user.slice/user-20821.slice/cgroup.clone_children b/test/cpuacct/user.slice/user-20821.slice/cgroup.clone_children
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/test/cpuacct/user.slice/user-20821.slice/cgroup.clone_children
@@ -0,0 +1 @@
+0
diff --git a/test/cpuacct/user.slice/user-20821.slice/cgroup.procs b/test/cpuacct/user.slice/user-20821.slice/cgroup.procs
new file mode 100644
index 0000000..898336e
--- /dev/null
+++ b/test/cpuacct/user.slice/user-20821.slice/cgroup.procs
@@ -0,0 +1,4 @@
+99062
+99080
+99081
+100190
diff --git a/test/cpuacct/user.slice/user-20821.slice/cpu.cfs_period_us b/test/cpuacct/user.slice/user-20821.slice/cpu.cfs_period_us
new file mode 100644
index 0000000..f7393e8
--- /dev/null
+++ b/test/cpuacct/user.slice/user-20821.slice/cpu.cfs_period_us
@@ -0,0 +1 @@
+100000
diff --git a/test/cpuacct/user.slice/user-20821.slice/cpu.cfs_quota_us b/test/cpuacct/user.slice/user-20821.slice/cpu.cfs_quota_us
new file mode 100644
index 0000000..9cf77b7
--- /dev/null
+++ b/test/cpuacct/user.slice/user-20821.slice/cpu.cfs_quota_us
@@ -0,0 +1 @@
+700000
diff --git a/test/cpuacct/user.slice/user-20821.slice/cpu.rt_period_us b/test/cpuacct/user.slice/user-20821.slice/cpu.rt_period_us
new file mode 100644
index 0000000..749fce6
--- /dev/null
+++ b/test/cpuacct/user.slice/user-20821.slice/cpu.rt_period_us
@@ -0,0 +1 @@
+1000000
diff --git a/test/cpuacct/user.slice/user-20821.slice/cpu.rt_runtime_us b/test/cpuacct/user.slice/user-20821.slice/cpu.rt_runtime_us
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/test/cpuacct/user.slice/user-20821.slice/cpu.rt_runtime_us
@@ -0,0 +1 @@
+0
diff --git a/test/cpuacct/user.slice/user-20821.slice/cpu.shares b/test/cpuacct/user.slice/user-20821.slice/cpu.shares
new file mode 100644
index 0000000..d7b1c44
--- /dev/null
+++ b/test/cpuacct/user.slice/user-20821.slice/cpu.shares
@@ -0,0 +1 @@
+1024
diff --git a/test/cpuacct/user.slice/user-20821.slice/cpu.stat b/test/cpuacct/user.slice/user-20821.slice/cpu.stat
new file mode 100644
index 0000000..9d3091f
--- /dev/null
+++ b/test/cpuacct/user.slice/user-20821.slice/cpu.stat
@@ -0,0 +1,3 @@
+nr_periods 108
+nr_throttled 0
+throttled_time 0
diff --git a/test/cpuacct/user.slice/user-20821.slice/cpuacct.stat b/test/cpuacct/user.slice/user-20821.slice/cpuacct.stat
new file mode 100644
index 0000000..0d6ef6b
--- /dev/null
+++ b/test/cpuacct/user.slice/user-20821.slice/cpuacct.stat
@@ -0,0 +1,2 @@
+user 41
+system 39
diff --git a/test/cpuacct/user.slice/user-20821.slice/cpuacct.usage b/test/cpuacct/user.slice/user-20821.slice/cpuacct.usage
new file mode 100644
index 0000000..f8fd26d
--- /dev/null
+++ b/test/cpuacct/user.slice/user-20821.slice/cpuacct.usage
@@ -0,0 +1 @@
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diff --git a/test/cpuacct/user.slice/user-20821.slice/cpuacct.usage_percpu b/test/cpuacct/user.slice/user-20821.slice/cpuacct.usage_percpu
new file mode 100644
index 0000000..38b8074
--- /dev/null
+++ b/test/cpuacct/user.slice/user-20821.slice/cpuacct.usage_percpu
@@ -0,0 +1 @@
+61450 0 159510184 194806141 30260284 104075880 27756977 11958754 17386097 3137240 4204283 2139986 2746800 24278319 0 2911961 97630563 480379 8984897 620214 7042341 0 61568952 0 38486957 0 8403565 0 18531243 0 569211 0 128518 0 193825 0 2063712 598605 1459026 0 
diff --git a/test/cpuacct/user.slice/user-20821.slice/notify_on_release b/test/cpuacct/user.slice/user-20821.slice/notify_on_release
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/test/cpuacct/user.slice/user-20821.slice/notify_on_release
@@ -0,0 +1 @@
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diff --git a/test/cpuacct/user.slice/user-20821.slice/tasks b/test/cpuacct/user.slice/user-20821.slice/tasks
new file mode 100644
index 0000000..898336e
--- /dev/null
+++ b/test/cpuacct/user.slice/user-20821.slice/tasks
@@ -0,0 +1,4 @@
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diff --git a/test/memory/user.slice/user-20821.slice/cgroup.clone_children b/test/memory/user.slice/user-20821.slice/cgroup.clone_children
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/cgroup.clone_children
@@ -0,0 +1 @@
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diff --git a/test/memory/user.slice/user-20821.slice/cgroup.procs b/test/memory/user.slice/user-20821.slice/cgroup.procs
new file mode 100644
index 0000000..21adb86
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/cgroup.procs
@@ -0,0 +1,4 @@
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diff --git a/test/memory/user.slice/user-20821.slice/memory.failcnt b/test/memory/user.slice/user-20821.slice/memory.failcnt
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.failcnt
@@ -0,0 +1 @@
+0
diff --git a/test/memory/user.slice/user-20821.slice/memory.kmem.failcnt b/test/memory/user.slice/user-20821.slice/memory.kmem.failcnt
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.kmem.failcnt
@@ -0,0 +1 @@
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diff --git a/test/memory/user.slice/user-20821.slice/memory.kmem.limit_in_bytes b/test/memory/user.slice/user-20821.slice/memory.kmem.limit_in_bytes
new file mode 100644
index 0000000..564113c
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.kmem.limit_in_bytes
@@ -0,0 +1 @@
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diff --git a/test/memory/user.slice/user-20821.slice/memory.kmem.max_usage_in_bytes b/test/memory/user.slice/user-20821.slice/memory.kmem.max_usage_in_bytes
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.kmem.max_usage_in_bytes
@@ -0,0 +1 @@
+0
diff --git a/test/memory/user.slice/user-20821.slice/memory.kmem.slabinfo b/test/memory/user.slice/user-20821.slice/memory.kmem.slabinfo
new file mode 100644
index 0000000..e69de29
diff --git a/test/memory/user.slice/user-20821.slice/memory.kmem.tcp.failcnt b/test/memory/user.slice/user-20821.slice/memory.kmem.tcp.failcnt
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.kmem.tcp.failcnt
@@ -0,0 +1 @@
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diff --git a/test/memory/user.slice/user-20821.slice/memory.kmem.tcp.limit_in_bytes b/test/memory/user.slice/user-20821.slice/memory.kmem.tcp.limit_in_bytes
new file mode 100644
index 0000000..564113c
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.kmem.tcp.limit_in_bytes
@@ -0,0 +1 @@
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diff --git a/test/memory/user.slice/user-20821.slice/memory.kmem.tcp.max_usage_in_bytes b/test/memory/user.slice/user-20821.slice/memory.kmem.tcp.max_usage_in_bytes
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.kmem.tcp.max_usage_in_bytes
@@ -0,0 +1 @@
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diff --git a/test/memory/user.slice/user-20821.slice/memory.kmem.tcp.usage_in_bytes b/test/memory/user.slice/user-20821.slice/memory.kmem.tcp.usage_in_bytes
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.kmem.tcp.usage_in_bytes
@@ -0,0 +1 @@
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diff --git a/test/memory/user.slice/user-20821.slice/memory.kmem.usage_in_bytes b/test/memory/user.slice/user-20821.slice/memory.kmem.usage_in_bytes
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.kmem.usage_in_bytes
@@ -0,0 +1 @@
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diff --git a/test/memory/user.slice/user-20821.slice/memory.limit_in_bytes b/test/memory/user.slice/user-20821.slice/memory.limit_in_bytes
new file mode 100644
index 0000000..8219e16
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.limit_in_bytes
@@ -0,0 +1 @@
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diff --git a/test/memory/user.slice/user-20821.slice/memory.max_usage_in_bytes b/test/memory/user.slice/user-20821.slice/memory.max_usage_in_bytes
new file mode 100644
index 0000000..db2d9a3
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.max_usage_in_bytes
@@ -0,0 +1 @@
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diff --git a/test/memory/user.slice/user-20821.slice/memory.memsw.failcnt b/test/memory/user.slice/user-20821.slice/memory.memsw.failcnt
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.memsw.failcnt
@@ -0,0 +1 @@
+0
diff --git a/test/memory/user.slice/user-20821.slice/memory.memsw.limit_in_bytes b/test/memory/user.slice/user-20821.slice/memory.memsw.limit_in_bytes
new file mode 100644
index 0000000..564113c
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.memsw.limit_in_bytes
@@ -0,0 +1 @@
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diff --git a/test/memory/user.slice/user-20821.slice/memory.memsw.max_usage_in_bytes b/test/memory/user.slice/user-20821.slice/memory.memsw.max_usage_in_bytes
new file mode 100644
index 0000000..db2d9a3
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.memsw.max_usage_in_bytes
@@ -0,0 +1 @@
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diff --git a/test/memory/user.slice/user-20821.slice/memory.memsw.usage_in_bytes b/test/memory/user.slice/user-20821.slice/memory.memsw.usage_in_bytes
new file mode 100644
index 0000000..1cbb388
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.memsw.usage_in_bytes
@@ -0,0 +1 @@
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diff --git a/test/memory/user.slice/user-20821.slice/memory.move_charge_at_immigrate b/test/memory/user.slice/user-20821.slice/memory.move_charge_at_immigrate
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.move_charge_at_immigrate
@@ -0,0 +1 @@
+0
diff --git a/test/memory/user.slice/user-20821.slice/memory.numa_stat b/test/memory/user.slice/user-20821.slice/memory.numa_stat
new file mode 100644
index 0000000..5876eda
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.numa_stat
@@ -0,0 +1,4 @@
+total=1875 N0=1251 N1=624
+file=564 N0=117 N1=447
+anon=1311 N0=1134 N1=177
+unevictable=0 N0=0 N1=0
diff --git a/test/memory/user.slice/user-20821.slice/memory.oom_control b/test/memory/user.slice/user-20821.slice/memory.oom_control
new file mode 100644
index 0000000..830834a
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.oom_control
@@ -0,0 +1,2 @@
+oom_kill_disable 0
+under_oom 0
diff --git a/test/memory/user.slice/user-20821.slice/memory.soft_limit_in_bytes b/test/memory/user.slice/user-20821.slice/memory.soft_limit_in_bytes
new file mode 100644
index 0000000..564113c
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.soft_limit_in_bytes
@@ -0,0 +1 @@
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diff --git a/test/memory/user.slice/user-20821.slice/memory.stat b/test/memory/user.slice/user-20821.slice/memory.stat
new file mode 100644
index 0000000..36e7f9f
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.stat
@@ -0,0 +1,30 @@
+cache 2322432
+rss 5378048
+rss_huge 0
+mapped_file 0
+swap 0
+pgpgin 33876
+pgpgout 31996
+pgfault 124973
+pgmajfault 0
+inactive_anon 0
+active_anon 5373952
+inactive_file 454656
+active_file 1867776
+unevictable 0
+hierarchical_memory_limit 68719476736
+hierarchical_memsw_limit 9223372036854771712
+total_cache 2322432
+total_rss 5378048
+total_rss_huge 0
+total_mapped_file 0
+total_swap 0
+total_pgpgin 33876
+total_pgpgout 31996
+total_pgfault 124973
+total_pgmajfault 0
+total_inactive_anon 0
+total_active_anon 5373952
+total_inactive_file 454656
+total_active_file 1867776
+total_unevictable 0
diff --git a/test/memory/user.slice/user-20821.slice/memory.swappiness b/test/memory/user.slice/user-20821.slice/memory.swappiness
new file mode 100644
index 0000000..abdfb05
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.swappiness
@@ -0,0 +1 @@
+60
diff --git a/test/memory/user.slice/user-20821.slice/memory.usage_in_bytes b/test/memory/user.slice/user-20821.slice/memory.usage_in_bytes
new file mode 100644
index 0000000..1cbb388
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.usage_in_bytes
@@ -0,0 +1 @@
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diff --git a/test/memory/user.slice/user-20821.slice/memory.use_hierarchy b/test/memory/user.slice/user-20821.slice/memory.use_hierarchy
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/memory.use_hierarchy
@@ -0,0 +1 @@
+1
diff --git a/test/memory/user.slice/user-20821.slice/notify_on_release b/test/memory/user.slice/user-20821.slice/notify_on_release
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/notify_on_release
@@ -0,0 +1 @@
+0
diff --git a/test/memory/user.slice/user-20821.slice/tasks b/test/memory/user.slice/user-20821.slice/tasks
new file mode 100644
index 0000000..21adb86
--- /dev/null
+++ b/test/memory/user.slice/user-20821.slice/tasks
@@ -0,0 +1,4 @@
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