Hey folks, Earlier in the week I wrote a Munin plugin that takes the "await" and "average queue length" fields from "iostat -x" and graphs them. This seems rather odd to me : http://picasaweb.google.ca/alan.mckay/Work#5380253477470243954 That is Qlen. And await looks similar http://picasaweb.google.ca/alan.mckay/Work#5380254090296723426 This is on an IBM 3650 with the 2 main "internal" drives set up in a mirrored config, and sdb are the 6 other drives set up in a RAID5 with a global hot spare. (4 drives in array + 1 to make it RAID5 + global hot spare) We aren't seeing any performance problems on this per-se. But that just seems like a really odd graph to me. Can anyone explain it? In particular, how regular it is? cheers, -Alan -- “Don't eat anything you've ever seen advertised on TV” - Michael Pollan, author of "In Defense of Food" -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
