OpenZFS 7303 - dynamic metaslab selection #5404
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@don-brady, thanks for your PR! By analyzing the history of the files in this pull request, we identified @grwilson, @behlendorf and @ahrens to be potential reviewers. |
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@don-brady sorry about letting this PR get stale. Could you please rebase it on master to resolve the minor merge conflict so we can get it merged. |
This change introduces a new weighting algorithm to improve metaslab selection. The new weighting algorithm relies on the SPACEMAP_HISTOGRAM feature. As a result, the metaslab weight now encodes the type of weighting algorithm used (size-based vs segment-based). Authored by: George Wilson <[email protected]> Reviewed by: Alex Reece <[email protected]> Reviewed by: Chris Siden <[email protected]> Reviewed by: Dan Kimmel <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Paul Dagnelie <[email protected]> Reviewed by: Pavel Zakharov [email protected] Reviewed by: Prakash Surya <[email protected]> Reviewed by: Don Brady <[email protected]> Approved by: Ported-by: Don Brady <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/7303 OpenZFS-commit: openzfs/openzfs@d5190931bd Porting Notes: The metaslab allocation tracing code is conditionally removed on linux (dependent on mdb debugger).
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Rebased with latest master. |
wli5
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Feb 28, 2017
This change introduces a new weighting algorithm to improve metaslab selection. The new weighting algorithm relies on the SPACEMAP_HISTOGRAM feature. As a result, the metaslab weight now encodes the type of weighting algorithm used (size-based vs segment-based). Porting Notes: The metaslab allocation tracing code is conditionally removed on linux (dependent on mdb debugger). Authored by: George Wilson <[email protected]> Reviewed by: Alex Reece <[email protected]> Reviewed by: Chris Siden <[email protected]> Reviewed by: Dan Kimmel <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Paul Dagnelie <[email protected]> Reviewed by: Pavel Zakharov [email protected] Reviewed by: Prakash Surya <[email protected]> Reviewed by: Don Brady <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Ported-by: Don Brady <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/7303 OpenZFS-commit: openzfs/openzfs@d5190931bd Closes openzfs#5404
wli5
pushed a commit
to wli5/zfs
that referenced
this pull request
Feb 28, 2017
This change introduces a new weighting algorithm to improve metaslab selection. The new weighting algorithm relies on the SPACEMAP_HISTOGRAM feature. As a result, the metaslab weight now encodes the type of weighting algorithm used (size-based vs segment-based). Porting Notes: The metaslab allocation tracing code is conditionally removed on linux (dependent on mdb debugger). Authored by: George Wilson <[email protected]> Reviewed by: Alex Reece <[email protected]> Reviewed by: Chris Siden <[email protected]> Reviewed by: Dan Kimmel <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Paul Dagnelie <[email protected]> Reviewed by: Pavel Zakharov [email protected] Reviewed by: Prakash Surya <[email protected]> Reviewed by: Don Brady <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Ported-by: Don Brady <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/7303 OpenZFS-commit: openzfs/openzfs@d5190931bd Closes openzfs#5404
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This change introduces a new weighting algorithm to improve metaslab selection. The new weighting algorithm relies on the SPACEMAP_HISTOGRAM feature. As a result, the metaslab weight now encodes the type of weighting algorithm used (size-based vs segment-based).
Authored by: George Wilson [email protected]
Reviewed by: Alex Reece [email protected]
Reviewed by: Chris Siden [email protected]
Reviewed by: Dan Kimmel [email protected]
Reviewed by: Matthew Ahrens [email protected]
Reviewed by: Paul Dagnelie [email protected]
Reviewed by: Pavel Zakharov [email protected]
Reviewed by: Prakash Surya [email protected]
Reviewed by: Don Brady [email protected]
Ported-by: Don Brady [email protected]
OpenZFS-issue: https://www.illumos.org/issues/7303
OpenZFS-commit: openzfs/openzfs@8710fccea7
Porting Notes: The metaslab allocation tracing code is conditionally removed on linux (dependent on mdb debugger).