[CFT] Improved ZFS metaslab code (faster write speed)
Alexander at Leidinger.net
Mon Aug 30 03:43:37 UTC 2010
On Fri, 27 Aug 2010 20:34:18 -0700 Artem Belevich <fbsdlist at src.cx>
> Perhaps reduced UMA fragmentation helps those subsystem that do use
> UMA (including ZFS which always uses uma for various housekeeping
PJD told me once that ZFS is always using UMA, it is just not using it
for everything (except when the sysctl is switched to use it for
FYI: I have a 9-current system which panics (without a backtrace/dump)
after 1-2 days of uptime when the zfs-uma-sysctl is activated. When it
is not activated it survives several weeks (let's say about a month).
So any work on the UMA fragmentation issue is well spend time.
No, I haven't tested any of the patches on this machine.
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