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Fixing error "memory.memsw.usage_in_bytes : no such file or directory" when running stand alone #1

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Fixing error "memory.memsw.usage_in_bytes : no such file or directory" when running stand alone #1

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82cf8fe
Fixing an issue where mstat is trying to read from non-existent cgroup
Sep 10, 2019
0640697
Adding instructions on how to run mstat standalone
Sep 10, 2019
3dd51d8
included stats from v1
Dec 9, 2019
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20 changes: 20 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -29,3 +29,23 @@ grained reporting):
And there is even a handy flag to modify the environment:

$ mstat -o data/mem.tsv -freq 59 -env LD_PRELOAD=libawesome.so -- ./test

### Use `mstat` without Docker ###
Prerequisite:
* [golang](https://golang.org/)

After installing golang and cloning this repository, download all the go dependencies with the command

$ cd mstat
$ go get -d ./...

Then proceed with make and installation. If you want to be able to uninstall
`mstat` later, instead of using `make install`, use the command below

$ sudo checkinstall

You will be able to uninstall `mstat` by running

$ sudo dpkg -r mstat

later.
6 changes: 4 additions & 2 deletions poller.go
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Expand Up @@ -10,6 +10,7 @@ import (
"time"

"github.com/containerd/cgroups"
v1 "github.com/containerd/cgroups/stats/v1"
)

type Record struct {
Expand All @@ -20,7 +21,8 @@ type Record struct {

type Stats struct {
Rss []Record
Stats []*cgroups.MemoryStat
Stats []*v1.Metrics
// Stats []*cgroups.MemoryStat
}

type endReq struct {
Expand Down Expand Up @@ -60,7 +62,7 @@ func NewPoller(cgroup cgroups.Cgroup, freq int) (*Poller, error) {

func (p *Poller) poll(t time.Time, cgroup cgroups.Cgroup) error {

stats, err := cgroup.Stat()
stats, err := cgroup.Stat(cgroups.ErrorHandler(cgroups.IgnoreNotExist))
if err != nil || stats == nil {
return fmt.Errorf("cg.Stat: %s", err)
}
Expand Down