diff options
Diffstat (limited to 'test/benchmarks/tools')
| -rw-r--r-- | test/benchmarks/tools/BUILD | 2 | ||||
| -rw-r--r-- | test/benchmarks/tools/meminfo.go | 60 | ||||
| -rw-r--r-- | test/benchmarks/tools/meminfo_test.go | 84 |
3 files changed, 146 insertions, 0 deletions
diff --git a/test/benchmarks/tools/BUILD b/test/benchmarks/tools/BUILD index a6bd949e6..e5734d85c 100644 --- a/test/benchmarks/tools/BUILD +++ b/test/benchmarks/tools/BUILD @@ -9,6 +9,7 @@ go_library( "fio.go", "hey.go", "iperf.go", + "meminfo.go", "redis.go", "sysbench.go", "tools.go", @@ -24,6 +25,7 @@ go_test( "fio_test.go", "hey_test.go", "iperf_test.go", + "meminfo_test.go", "redis_test.go", "sysbench_test.go", ], diff --git a/test/benchmarks/tools/meminfo.go b/test/benchmarks/tools/meminfo.go new file mode 100644 index 000000000..2414a96a7 --- /dev/null +++ b/test/benchmarks/tools/meminfo.go @@ -0,0 +1,60 @@ +// Copyright 2020 The gVisor 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. + +package tools + +import ( + "fmt" + "regexp" + "strconv" + "testing" +) + +// Meminfo wraps measurements of MemAvailable using /proc/meminfo. +type Meminfo struct { +} + +// MakeCmd returns a command for checking meminfo. +func (*Meminfo) MakeCmd() (string, []string) { + return "cat", []string{"/proc/meminfo"} +} + +// Report takes two reads of meminfo, parses them, and reports the difference +// divided by b.N. +func (*Meminfo) Report(b *testing.B, before, after string) { + b.Helper() + + beforeVal, err := parseMemAvailable(before) + if err != nil { + b.Fatalf("could not parse before value %s: %v", before, err) + } + + afterVal, err := parseMemAvailable(after) + if err != nil { + b.Fatalf("could not parse before value %s: %v", before, err) + } + val := 1024 * ((beforeVal - afterVal) / float64(b.N)) + b.ReportMetric(val, "average_container_size_bytes") +} + +var memInfoRE = regexp.MustCompile(`MemAvailable:\s*(\d+)\skB\n`) + +// parseMemAvailable grabs the MemAvailable number from /proc/meminfo. +func parseMemAvailable(data string) (float64, error) { + match := memInfoRE.FindStringSubmatch(data) + if len(match) < 2 { + return 0, fmt.Errorf("couldn't find MemAvailable in %s", data) + } + return strconv.ParseFloat(match[1], 64) +} diff --git a/test/benchmarks/tools/meminfo_test.go b/test/benchmarks/tools/meminfo_test.go new file mode 100644 index 000000000..ba803540f --- /dev/null +++ b/test/benchmarks/tools/meminfo_test.go @@ -0,0 +1,84 @@ +// Copyright 2020 The gVisor 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. + +package tools + +import ( + "testing" +) + +// TestMeminfo checks the Meminfo parser on sample output. +func TestMeminfo(t *testing.T) { + sampleData := ` +MemTotal: 16337408 kB +MemFree: 3742696 kB +MemAvailable: 9319948 kB +Buffers: 1433884 kB +Cached: 4607036 kB +SwapCached: 45284 kB +Active: 8288376 kB +Inactive: 2685928 kB +Active(anon): 4724912 kB +Inactive(anon): 1047940 kB +Active(file): 3563464 kB +Inactive(file): 1637988 kB +Unevictable: 326940 kB +Mlocked: 48 kB +SwapTotal: 33292284 kB +SwapFree: 32865736 kB +Dirty: 708 kB +Writeback: 0 kB +AnonPages: 4304204 kB +Mapped: 975424 kB +Shmem: 910292 kB +KReclaimable: 744532 kB +Slab: 1058448 kB +SReclaimable: 744532 kB +SUnreclaim: 313916 kB +KernelStack: 25188 kB +PageTables: 65300 kB +NFS_Unstable: 0 kB +Bounce: 0 kB +WritebackTmp: 0 kB +CommitLimit: 41460988 kB +Committed_AS: 22859492 kB +VmallocTotal: 34359738367 kB +VmallocUsed: 63088 kB +VmallocChunk: 0 kB +Percpu: 9248 kB +HardwareCorrupted: 0 kB +AnonHugePages: 786432 kB +ShmemHugePages: 0 kB +ShmemPmdMapped: 0 kB +FileHugePages: 0 kB +FilePmdMapped: 0 kB +HugePages_Total: 0 +HugePages_Free: 0 +HugePages_Rsvd: 0 +HugePages_Surp: 0 +Hugepagesize: 2048 kB +Hugetlb: 0 kB +DirectMap4k: 5408532 kB +DirectMap2M: 11241472 kB +DirectMap1G: 1048576 kB +` + want := 9319948.0 + got, err := parseMemAvailable(sampleData) + if err != nil { + t.Fatalf("parseMemAvailable failed: %v", err) + } + if got != want { + t.Fatalf("parseMemAvailable got %f, want %f", got, want) + } +} |