From 6202e8102b9728f89c2ab7bb504306a2bd007878 Mon Sep 17 00:00:00 2001 From: Adrian Reber Date: Tue, 9 Nov 2021 09:15:50 +0000 Subject: Added optional container checkpointing statistics This adds the parameter '--print-stats' to 'podman container checkpoint'. With '--print-stats' Podman will measure how long Podman itself, the OCI runtime and CRIU requires to create a checkpoint and print out these information. CRIU already creates checkpointing statistics which are just read in addition to the added measurements. In contrast to just printing out the ID of the checkpointed container, Podman will now print out JSON: # podman container checkpoint --latest --print-stats { "podman_checkpoint_duration": 360749, "container_statistics": [ { "Id": "25244244bf2efbef30fb6857ddea8cb2e5489f07eb6659e20dda117f0c466808", "runtime_checkpoint_duration": 177222, "criu_statistics": { "freezing_time": 100657, "frozen_time": 60700, "memdump_time": 8162, "memwrite_time": 4224, "pages_scanned": 20561, "pages_written": 2129 } } ] } The output contains 'podman_checkpoint_duration' which contains the number of microseconds Podman required to create the checkpoint. The output also includes 'runtime_checkpoint_duration' which is the time the runtime needed to checkpoint that specific container. Each container also includes 'criu_statistics' which displays the timing information collected by CRIU. Signed-off-by: Adrian Reber --- pkg/api/handlers/libpod/containers.go | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) (limited to 'pkg/api/handlers') diff --git a/pkg/api/handlers/libpod/containers.go b/pkg/api/handlers/libpod/containers.go index 343c0d0b3..d8312e9be 100644 --- a/pkg/api/handlers/libpod/containers.go +++ b/pkg/api/handlers/libpod/containers.go @@ -214,6 +214,7 @@ func Checkpoint(w http.ResponseWriter, r *http.Request) { TCPEstablished bool `schema:"tcpEstablished"` Export bool `schema:"export"` IgnoreRootFS bool `schema:"ignoreRootFS"` + PrintStats bool `schema:"printStats"` }{ // override any golang type defaults } @@ -248,11 +249,12 @@ func Checkpoint(w http.ResponseWriter, r *http.Request) { KeepRunning: query.LeaveRunning, TCPEstablished: query.TCPEstablished, IgnoreRootfs: query.IgnoreRootFS, + PrintStats: query.PrintStats, } if query.Export { options.TargetFile = targetFile } - err = ctr.Checkpoint(r.Context(), options) + criuStatistics, runtimeCheckpointDuration, err := ctr.Checkpoint(r.Context(), options) if err != nil { utils.InternalServerError(w, err) return @@ -267,7 +269,15 @@ func Checkpoint(w http.ResponseWriter, r *http.Request) { utils.WriteResponse(w, http.StatusOK, f) return } - utils.WriteResponse(w, http.StatusOK, entities.CheckpointReport{Id: ctr.ID()}) + utils.WriteResponse( + w, + http.StatusOK, + entities.CheckpointReport{ + Id: ctr.ID(), + RuntimeDuration: runtimeCheckpointDuration, + CRIUStatistics: criuStatistics, + }, + ) } func Restore(w http.ResponseWriter, r *http.Request) { -- cgit v1.2.3-54-g00ecf