hg push getting worse?
Jonathan.Gibbons at Sun.COM
Thu Aug 27 11:16:09 PDT 2009
Any chance of that upgrade happening? What would it take to make it happen?
Tim Bell wrote:
> I wrote:
>> ZFS snapshots are supposed to be lightweight and inexpensive. We
>> still have them going back to the beginning of time on hg.ojn.
>> Perhaps we have accumulated enough to expose quadratic (or worse)
>> performance problems. I will do some searching over on OpenSolaris.
> I spent ten or fifteen minutes searching on this issue. The short
> version is that there has been a significant amount of ZFS
> performance work done since
> "Solaris Express Developer Edition 9/07 snv_70a X86"
> which is the release hg.ojn is running. That was the best choice
> back when we set the server up, but now it is pretty old.
> Here are a few examples - all of these are marked FIXed in builds
> more recent than 70a. (FYI: OpenSolaris is currently up around b121):
> 6596190 ""zfs list" is slow due to version property"
> 6386929 "initial "zfs list" is slow"
> 6755389 "Initial run of any zfs command that iterates over datasets can be slow"
> Here is a message thread related to 'zfs list' being slow:
> hg.ojn has been extremely stable since we set it up - it currently
> has 652 days of uptime. All the same, it it probably time to start
> planning an upgrade.
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