Well then that is why, the writes are taking quite a while to reach the platter. Nothing is wrong, the drive is just slow :-)
-- Jens Axboe
I don't know what to say because sometimes works really good. bi=20000.
I'm fighting with this problem for 1 month now and I realy tried to resolve the problem.
Postgresql is 8.0.0.
iostat -x 1 shows:
extended device statistics
device mgr/s mgw/s r/s w/s kr/s kw/s size queue wait svc_t %b
hda 1 98 190.5 37.1 1161.4 542.5 7.5 2.3 20.4 3.6 81
extended device statistics
device mgr/s mgw/s r/s w/s kr/s kw/s size queue wait svc_t %b
hda 0 144 8.3 121.3 0.0 1081.5 8.3 0.0 0.0 7.8 100
extended device statistics
device mgr/s mgw/s r/s w/s kr/s kw/s size queue wait svc_t %b
hda 0 134 0.0 122.0 0.0 1016.0 8.3 0.0 0.0 8.2 100
extended device statistics
device mgr/s mgw/s r/s w/s kr/s kw/s size queue wait svc_t %b
hda 0 139 0.0 128.3 0.0 1074.7 8.4 0.0 0.0 7.9 100
extended device statistics
device mgr/s mgw/s r/s w/s kr/s kw/s size queue wait svc_t %b
hda 0 140 0.0 128.0 0.0 1072.0 8.4 0.0 0.0 7.8 100
extended device statistics
device mgr/s mgw/s r/s w/s kr/s kw/s size queue wait svc_t %b
hda 0 121 0.0 115.0 0.0 936.0 8.1 0.0 0.0 8.7 100
extended device statistics
device mgr/s mgw/s r/s w/s kr/s kw/s size queue wait svc_t %b
hda 0 140 0.0 123.0 0.0 1072.0 8.7 0.0 0.0 8.1 100
extended device statistics
device mgr/s mgw/s r/s w/s kr/s kw/s size queue wait svc_t %b
hda 0 142 0.0 129.0 0.0 1080.0 8.4 0.0 0.0 7.8 100
extended device statistics
device mgr/s mgw/s r/s w/s kr/s kw/s size queue wait svc_t %b
hda 0 141 0.0 129.3 0.0 1082.8 8.4 0.0 0.0 7.8 100Thanks!
P.S. I tried also with cfq and see no improvement.
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