Kir Kolyshkin defb1cc718 libct/cg/dev: optimize and test findDeviceGroup ...

1. Use strings.TrimPrefix instead of fmt.Sscanf and simplify the code.

2. Add a test case and a benchmark.

The benchmark shows some improvement, compared to the old
implementation:

name               old time/op    new time/op    delta
FindDeviceGroup-4    39.7µs ± 2%    26.8µs ± 2%  -32.63%  (p=0.008 n=5+5)

name               old alloc/op   new alloc/op   delta
FindDeviceGroup-4    6.08kB ± 0%    4.23kB ± 0%  -30.39%  (p=0.008 n=5+5)

name               old allocs/op  new allocs/op  delta
FindDeviceGroup-4       117 ± 0%         6 ± 0%  -94.87%  (p=0.008 n=5+5)

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

2023-04-27 09:12:08 -07:00

..

devices

libct/cg/dev: optimize and test findDeviceGroup

2023-04-27 09:12:08 -07:00

fs

libct/cg: add misc controller to v1 drivers

2023-04-05 15:49:58 -07:00

fs2

support SCHED_IDLE for runc cgroupfs

2023-01-31 15:19:05 +08:00

fscommon

Remove io/ioutil use

2021-10-14 13:46:02 -07:00

manager

libcontainer: remove LinuxFactory

2022-03-22 23:44:31 -07:00

systemd

libct/cg/sd: use systemd version when generating dev props

2023-04-24 17:05:26 -07:00

cgroups_test.go

libct/*: remove linux build tag from some pkgs

2021-08-30 20:52:07 -07:00

cgroups.go

Decouple cgroup devices handling

2022-05-18 11:17:08 -07:00

file_test.go

Merge pull request #3030 from kolyshkin/openat2-improve

2021-09-03 16:54:39 +02:00

file.go

libct/cg/OpenFile: check cgroupFd on error

2021-08-11 17:00:05 -07:00

getallpids_test.go

libct/*: remove linux build tag from some pkgs

2021-08-30 20:52:07 -07:00

getallpids.go

libct/cg: rm go 1.15 compatibility

2021-12-14 13:08:47 -08:00

stats.go

libct/*: remove linux build tag from some pkgs

2021-08-30 20:52:07 -07:00

utils_test.go

libct/cg: TestGetHugePageSizeImpl: use t.Run

2021-11-19 12:03:12 -08:00

utils.go

libct/cg: rm EnterPid

2023-03-31 13:33:00 +11:00

v1_utils.go

libct/cg: rm GetInitCgroup[Path]

2023-04-04 11:19:25 -07:00