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IDS Forum

Re: Cached reads going to 0.00%

Posted By: ChrisSalch
Date: Monday, 19 June 2006, at 9:09 a.m.

In Response To: RE: Cached reads going to 0.00% (Support Informix)

Thanks all, I hadn't thought about an overflow.

Chris S.

Support Inf.... wrote:
> Yes, we have the same on IDS7.31
> seems to be normal, overrun of some internal profile counters.
> So you have to reset the counters once week or so : onstat -z
>
> Yves
>
> -----Original Message-----
> From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org]
> Sent: 18 June 2006 05:55
> To: ids@iiug.org
> Subject: Cached reads going to 0.00% [6973]
>
> I've noticed this a couple of times in onstat, for no apparent reason cached
>
> reads go from 95% or so to 0.00% and then slowly build back up to 95% over
> the
> next 24hours or so. There's a cronjob that runs at 8, noon, 5 and midnight
> that records a few interesting statistics on the machine. We're running
> Informix 7.31.UD6 upgrading to a 9.4 on HPUX 11i. The hardware is a little
> old
> and we have had problems with disk failures in the recent past, any clues?
>
> Chris S.
>
> Noon stats run:
>
> Uptime
>
> 12:05pm up 18 days, 5 mins, 57 users, load average: 0.46, 0.41, 0.41
>
> Free Disk Space
>
> Filesystem kbytes used avail %used Mounted on
> /dev/vg00/lvol3 143360 88747 51249 63% /
> /dev/vg00/lvol1 159509 40391 103167 28% /stand
> /dev/vg00/lvol8 2048000 1541798 477349 76% /var
> /dev/vg00/lvol7 2048000 1894310 144902 93% /usr
> /dev/vg00/lvol4 524288 127645 377515 25% /tmp
> /dev/vg00/lvol6 2457600 1888515 533739 78% /opt
> /dev/vg00/lvol12 155648 1141 144858 1% /opt/perl5
> /dev/vg00/lvol19 1024000 889055 126530 88% /opt/informix
> /dev/vg00/lvol11 307200 10529 278156 4% /opt/gnu
> /dev/vg00/lvol10 1024000 379940 603844 39% /opt/carstrain
> /dev/vg00/lvol9 3072000 1589200 1390347 53% /opt/carsi
> /dev/vg00/lvol20 3072000 1229736 1729229 42% /opt/carsi/smo
> /dev/vg00/lvol13 2048000 334130 1606763 17% /opt/apache
> /dev/vg00/lvol5 20480 1114 18161 6% /home
> /dev/vg00/lvol14 2457600 1594848 810532 66% /home/carsids
>
> Database Free Space
>
> Name KB Size KB Free KB Used Percent
> ------------ ------- ------- ------- -------
> root 1024000 668062 355938 34.8%
> dbs0 12288000 4632328 7655672 62.3%
> temp1 512000 511434 566 0.1%
> temp0 512000 511498 502 0.1%
> ------------ ------- ------- ------- -------
> Total 14336000 6323322 8012678
> Logical Logs 300000 243820 56180 18.7%
>
> who
>
> prices pts/tb Jun 15 17:54
> stuberj pts/tc Jun 16 07:05
> berryj pts/td Jun 16 07:33
> watkinst pts/te Jun 16 07:37
> skaggsk pts/tf Jun 16 07:39
> engelkek pts/tg Jun 16 07:39
> bishopa pts/th Jun 16 07:40
> dennisg pts/ti Jun 15 11:52
> hammerm pts/tj Jun 16 08:04
> moughond pts/tl Jun 16 07:41
> rueggt pts/tm Jun 15 08:13
> westbros pts/tn Jun 16 07:41
> hoffpowj pts/tp Jun 16 07:45
> hellmutk pts/tq Jun 16 07:54
> clarka pts/tr Jun 16 08:09
> hammd pts/ts Jun 15 08:29
> maloned pts/tt Jun 15 08:53
> barnesc pts/tu Jun 16 07:56
> wessonc pts/tw Jun 16 07:59
> daviss pts/tx Jun 16 08:12
> deyoungj pts/ty Jun 16 08:08
> jonesa pts/tz Jun 16 08:14
> sarverl pts/tA Jun 16 08:09
> murleyt pts/tB Jun 16 08:09
> mcgheeb pts/tC Jun 16 09:06
> hammerm pts/tD Jun 16 08:16
> hoodm pts/tE Jun 16 08:19
> ackerk pts/tF Jun 16 09:24
> keilersv pts/tG Jun 16 08:21
> legera pts/tH Jun 16 08:36
> hellmutk pts/tI Jun 16 08:23
> moughond pts/tJ Jun 16 08:24
> smithc pts/tL Jun 16 08:35
> weatherb pts/tM Jun 16 10:00
> bullardk pts/tN Jun 16 08:44
> westbros pts/tO Jun 16 08:42
> ardend pts/tP Jun 16 11:16
> tilleryl pts/tQ Jun 16 09:13
> childree pts/tR Jun 16 08:47
> mccalluj pts/tS Jun 15 10:17
> dickersd pts/tT Jun 15 10:21
> westbros pts/tU Jun 16 12:01
> royek pts/tV Jun 16 09:22
> edwardje pts/tW Jun 16 10:26
> dickersd pts/tX Jun 15 10:25
> burrowsr pts/tY Jun 16 09:44
> harperk pts/tZ Jun 16 09:28
> reedd pts/t2 Jun 16 11:28
> bradfork pts/t3 Jun 16 10:01
> bakerl pts/t4 Jun 16 10:52
> rueggt pts/t5 Jun 15 11:30
> waltonj pts/t7 Jun 16 11:40
> holleyj pts/t8 Jun 16 10:46
> prices pts/t9 Jun 16 10:44
> holleyj pts/tab Jun 16 11:31
> erpeldic pts/tbb Jun 16 11:32
> powellc pts/tdb Jun 16 11:47
>
> Database Status
>
> Informix Dynamic Server Version 7.31.UD6 -- On-Line -- Up 18 days 00:03:58
>

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