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Add 'stats-dump' file to exported checkpoint #12184

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adrianreber
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There was the question about how long it takes to create a checkpoint. CRIU already provides some statistics about how long it takes to create a checkpoint and similar statistics.

With this change the file stats-dump is included in the checkpoint archive and the tool checkpointctl can be used to display these statistics:

# ./checkpointctl show -t /tmp/cp.tar --print-stats

Displaying container checkpoint data from /tmp/dump.tar

[...]
CRIU dump statistics
+---------------+-------------+--------------+---------------+---------------+---------------+
| FREEZING TIME | FROZEN TIME | MEMDUMP TIME | MEMWRITE TIME | PAGES SCANNED | PAGES WRITTEN |
+---------------+-------------+--------------+---------------+---------------+---------------+
| 105405 us     | 1376964 us  | 504399 us    | 446571 us     |        492153 |         88689 |
+---------------+-------------+--------------+---------------+---------------+---------------+

There was the question about how long it takes to create a checkpoint.
CRIU already provides some statistics about how long it takes to create
a checkpoint and similar.

With this change the file 'stats-dump' is included in the checkpoint
archive and the tool checkpointctl can be used to display these
statistics:

./checkpointctl show -t /tmp/cp.tar --print-stats

Displaying container checkpoint data from /tmp/dump.tar

[...]
CRIU dump statistics
+---------------+-------------+--------------+---------------+---------------+---------------+
| FREEZING TIME | FROZEN TIME | MEMDUMP TIME | MEMWRITE TIME | PAGES SCANNED | PAGES WRITTEN |
+---------------+-------------+--------------+---------------+---------------+---------------+
| 105405 us     | 1376964 us  | 504399 us    | 446571 us     |        492153 |         88689 |
+---------------+-------------+--------------+---------------+---------------+---------------+

Signed-off-by: Adrian Reber <[email protected]>
@adrianreber adrianreber force-pushed the 2021-11-05-stats-dump branch from 84cc219 to 3e1940a Compare November 5, 2021 16:15
@rhatdan
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rhatdan commented Nov 6, 2021

LGTM
@containers/podman-maintainers PTAL

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@giuseppe giuseppe left a comment

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/lgtm

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openshift-ci bot commented Nov 8, 2021

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: adrianreber, giuseppe

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@openshift-ci openshift-ci bot added lgtm Indicates that a PR is ready to be merged. approved Indicates a PR has been approved by an approver from all required OWNERS files. labels Nov 8, 2021
@openshift-merge-robot openshift-merge-robot merged commit 865653b into containers:main Nov 8, 2021
@github-actions github-actions bot added the locked - please file new issue/PR Assist humans wanting to comment on an old issue or PR with locked comments. label Sep 22, 2023
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4 participants