Date: Thu, 22 Apr 2010 20:24:09 -0400 From: jhell <jhell@dataix.net> To: Andriy Gapon <avg@icyb.net.ua> Cc: freebsd-fs@freebsd.org Subject: Re: some arc_reclaim_needed stats Message-ID: <4BD0E8A9.4040403@dataix.net> In-Reply-To: <4BD0BC44.1040204@icyb.net.ua> References: <4BC86CF3.7060708@icyb.net.ua> <4BCEF7E4.6080606@dataix.net> <4BD0BC44.1040204@icyb.net.ua>
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On 04/22/2010 17:14, Andriy Gapon wrote: > on 21/04/2010 16:04 jhell said the following: >> If these are not tunable values and serve a good purpose as a stat to be >> added at some point, would they not be better in kstat.zfs.misc? rather >> than vfs.zfs so they can be collected with the rest of the stats via >> arc_summary.pl. > > Yes, I agree. > But right now no one seems to think that there is anything useful about these > stats :-) > >> Without seeing the thread "kstat.zfs.misc.arcstats.hash_collisions" I >> had updated the arc_summary.pl script yesterday to include these under a >> "ARC Misc" section in the output. Just a FYI in case it may be useful to >> you or others. > > BTW, it would be nice if hash table size (number of buckets) would be reported > too. But that's a kernel change, not arc_summary. > Something like what is in r59 and in the download section ? ARC Hash Breakdown: Elements Max: 129057 Elements Current: 99.24% 128070 Collisions: 251021 Chain Max: 21 Chains: 16326 ;) -- jhell
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