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Re: [Question #170794]: carbon-cache.py at its limit?

To: graphite-dev@xxxxxxxxxxxxxxxxxxx
From: Cody Stevens <question170794@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 13 Sep 2011 22:45:41 -0000
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Question #170794 on Graphite changed:
https://answers.launchpad.net/graphite/+question/170794

Cody Stevens posted a new comment:
I can't seem to get the %util below 70%.  Ihave the
MAX_UPDATES_PER_SECOND set at 50 and after a fresh reboot it still
climbs over 70%.   The drives are only 7500 RPM drives configured in
RAID 5.

 iostat -d /dev/sdb1 -x  2 2
Linux 2.6.18-238.19.1.el5.centos.plus (graphch02) 	09/13/2011 	_x86_64_

Device:         rrqm/s   wrqm/s     r/s     w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
sdb1              0.49     0.00   78.41   44.87  1233.28   475.42    13.86     1.05    8.52   5.68  70.08

Device:         rrqm/s   wrqm/s     r/s     w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
sdb1              0.00     0.00   18.50  126.00   372.00  1336.00    11.82     0.95    6.37   6.41  92.60


Any suggestions?  Again, I would provide graphs but see no place to post them.

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