Date: Sat, 9 Feb 2013 21:41:37 -0500 From: Garrett Wollman <wollman@bimajority.org> To: freebsd-stable@freebsd.org Subject: Interpreting "vmstat -z" output Message-ID: <20759.2273.284868.12857@hergotha.csail.mit.edu>
next in thread | raw e-mail | index | archive | help
On a server that's been experiencing some issues, I note the following in "vmstat -z": ITEM SIZE LIMIT USED FREE REQ FAIL SLEEP UMA Kegs: 208, 0, 188, 16, 188, 0, 0 UMA Zones: 3456, 0, 188, 0, 188, 0, 0 UMA Slabs: 568, 0, 1209668, 6211,50929964, 0, 0 UMA RCntSlabs: 568, 0, 50791, 1, 50791, 0, 0 UMA Hash: 256, 0, 78, 12, 80, 0, 0 16 Bucket: 152, 0, 227, 23, 227, 0, 0 32 Bucket: 280, 0, 522, 10, 522, 0, 0 64 Bucket: 536, 0, 783, 1, 783, 156, 0 128 Bucket: 1048, 0, 33513, 0, 33513,134423, 0 [...] How should I interpret the failure count for "64 Bucket" and "128 Bucket"? Does it represent a problem, or something that needs to be tuned? There are no obvious tunables, but the code is not exactly transparent. No other zones show failures. -GAWollman
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20759.2273.284868.12857>