mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-11-18 10:21:01 +03:00
6f7bc75825
On large systems, the memory used by loaded metaslabs can become a concern. While range trees are a fairly efficient data structure, on heavily fragmented pools they can still consume a significant amount of memory. This problem is amplified when we fail to unload metaslabs that we aren't using. Currently, we only unload a metaslab during metaslab_sync_done; in order for that function to be called on a given metaslab in a given txg, we have to have dirtied that metaslab in that txg. If the dirtying was the result of an allocation, we wouldn't be unloading it (since it wouldn't be 8 txgs since it was selected), so in effect we only unload a metaslab during txgs where it's being freed from. We move the unload logic from sync_done to a new function, and call that function on all metaslabs in a given vdev during vdev_sync_done(). Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Paul Dagnelie <pcd@delphix.com> Closes #8837 |
||
|---|---|---|
| .. | ||
| avl | ||
| icp | ||
| lua | ||
| nvpair | ||
| spl | ||
| unicode | ||
| zcommon | ||
| zfs | ||
| .gitignore | ||
| Makefile.in | ||