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Diffstat (limited to 'docs/source/markdown/podman-container-checkpoint.1.md')
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diff --git a/docs/source/markdown/podman-container-checkpoint.1.md b/docs/source/markdown/podman-container-checkpoint.1.md index 56fd848ac..1faa40a94 100644 --- a/docs/source/markdown/podman-container-checkpoint.1.md +++ b/docs/source/markdown/podman-container-checkpoint.1.md @@ -68,6 +68,40 @@ Dump the *container's* memory information only, leaving the *container* running. operations will supersede prior dumps. It only works on `runc 1.0-rc3` or `higher`.\ The default is **false**. +#### **--print-stats** + +Print out statistics about checkpointing the container(s). The output is +rendered in a JSON array and contains information about how much time different +checkpoint operations required. Many of the checkpoint statistics are created +by CRIU and just passed through to Podman. The following information is provided +in the JSON array: + +- **podman_checkpoint_duration**: Overall time (in microseconds) needed to create + all checkpoints. + +- **runtime_checkpoint_duration**: Time (in microseconds) the container runtime + needed to create the checkpoint. + +- **freezing_time**: Time (in microseconds) CRIU needed to pause (freeze) all + processes in the container (measured by CRIU). + +- **frozen_time**: Time (in microseconds) all processes in the container were + paused (measured by CRIU). + +- **memdump_time**: Time (in microseconds) needed to extract all required memory + pages from all container processes (measured by CRIU). + +- **memwrite_time**: Time (in microseconds) needed to write all required memory + pages to the corresponding checkpoint image files (measured by CRIU). + +- **pages_scanned**: Number of memory pages scanned to determine if they need + to be checkpointed (measured by CRIU). + +- **pages_written**: Number of memory pages actually written to the checkpoint + image files (measured by CRIU). + +The default is **false**. + #### **--tcp-established** Checkpoint a *container* with established TCP connections. If the checkpoint @@ -106,7 +140,7 @@ Dump the container's memory information of the latest container into an archive ``` ## SEE ALSO -**[podman(1)](podman.1.md)**, **[podman-container-restore(1)](podman-container-restore.1.md)** +**[podman(1)](podman.1.md)**, **[podman-container-restore(1)](podman-container-restore.1.md)**, **criu(8)** ## HISTORY September 2018, Originally compiled by Adrian Reber <areber@redhat.com> |