Date: Tue, 26 Jun 2012 10:57:06 -0500 From: Mark Felder <feld@feld.me> To: freebsd-fs@freebsd.org Cc: Andriy Gapon <avg@freebsd.org> Subject: Re: [PATCH] Simple ARC stats in top Message-ID: <op.wgio9gg934t2sn@tech304> In-Reply-To: <4FE9DB60.1030905@FreeBSD.org> References: <201206251443.41768.jhb@freebsd.org> <op.wgik62ia34t2sn@tech304> <4FE9CC00.9090501@FreeBSD.org> <op.wgins2ez34t2sn@tech304> <4FE9DB60.1030905@FreeBSD.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Tue, 26 Jun 2012 10:55:12 -0500, Andriy Gapon <avg@freebsd.org> wrote: > Does your system also has L2 ARC? > If so, could you please show a value of =20 > kstat.zfs.misc.arcstats.l2_hdr_size? > Otherwise, it's hard for me to explain the huge difference between Max = =20 > Size and > ARC Size. Yes, it does. zfs2# sysctl kstat.zfs.misc.arcstats.l2_hdr_size kstat.zfs.misc.arcstats.l2_hdr_size: 6775072568 zfs2# zfs-stats -L =2D----------------------------------------------------------------------= - ZFS Subsystem Report Tue Jun 26 10:56:54 2012 =2D----------------------------------------------------------------------= - L2 ARC Summary: (HEALTHY) Passed Headroom: 61 Tried Lock Failures: 252.97k IO In Progress: 0 Low Memory Aborts: 0 Free on Write: 382.20k Writes While Full: 11.08k R/W Clashes: 270 Bad Checksums: 0 IO Errors: 0 SPA Mismatch: 0 L2 ARC Size: (Adaptive) 225.09 GiB Header Size: 2.80% 6.31 GiB L2 ARC Breakdown: 25.52m Hit Ratio: 87.46% 22.32m Miss Ratio: 12.54% 3.20m Feeds: 3.99m L2 ARC Buffer: Bytes Scanned: 42.67 TiB Buffer Iterations: 3.99m List Iterations: 255.38m NULL List Iterations: 219.99m L2 ARC Writes: Writes Sent: 100.00% 913.05k =2D----------------------------------------------------------------------= -
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?op.wgio9gg934t2sn>