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IDS Forum

RE: Re.slow response

Posted By: keithfang@comcast.net
Date:

Are you running client-server applications? Can the bottleneck be at the Application servers or Web servers? If IDS is well tuned and running at its full speed, and yet you are still CPU bound (CPU usage constantly at 90+%). It maybe time to upgrade the hardware.

Keith


> Hi,
>
> Here is the output of onstat -p, buffers read/write looks good. Checkpoint
> is always 0-2 secs,
> and checked couple of other things nowhere I can find the problem/issue. I
> do have perf. manual for reference.
> We have fiber disk with cache 512 mb, we are planning to put 2 gb cache its
> under consideration.
> O/S looks good except the oninit process which is eating 80-90 % of the
> power, this happens whenever we try to open window for more business, and
> start getting bigger volume of transactions into the database(irrespective
> of the time of the day)
> Backup takes place during night time.
> --------------------------------------------------------------------------------
> ------------------------------------------
> Profile
>
> dskreads pagreads bufreads Êched dskwrits pagwrits bufwrits Êched
> 4593473 5000224 2424607883 99.81 2036594 3058089 113185276 98.20
>
> isamtot open start read write rewrite delete commit
> rollbk
> 2418731304 35461283 17699289 2117912282 15758216 1343207 44413 1181780
> 5
>
> gp_read gp_write gp_rewrt gp_del gp_alloc gp_free gp_curs
> 0 0 0 0 0 0 0
>
> ovlock ovuserthread ovbuff usercpu syscpu numckpts flushes
> 0 0 0 35322.40 4795.57 19 7245
>
> bufwaits lokwaits lockreqs deadlks dltouts ckpwaits compress seqscans
> 525818 1 140500918 0 0 254 7932843 276854
>
> ixda-RA idx-RA da-RA RA-pgsused lchwaits
> 437940 834684 402338 1674814 4470596
> --------------------------------------------------------------------------------
> -------------------------------------
> Sushil...
>
> >From: NormaJean.Sebastian@tellabs.com
> >To: forum.subscriber@iiug.org, ids@iiug.org, sushilps@hotmail.com
> >Subject: RE: Re.slow response [3097]
> >Date: Thu, 10 Jun 2004 12:45:51 -0500
> >MIME-Version: 1.0
> >Received: from tellabs.com ([204.154.129.57]) by mc1-f9.hotmail.com with
> >Microsoft SMTPSVC(5.0.2195.6824); Thu, 10 Jun 2004 10:47:27 -0700
> >Received: from ([172.23.207.11])by mx4.tellabs.com with ESMTP ;Thu, 10 Jun
> >2004 12:45:51 -0500
> >Received: from localhost (root@localhost)by mailw01.hq.tellabs.com
> >(8.11.1/8.8.6) with ESMTP id i5AHjp302710;Thu, 10 Jun 2004 12:45:51 -0500
> >(CDT)
> >X-Message-Info: JGTYoYF78jEeFDEaX/cCYoJC6GHZkbHF
> >X-OpenMail-Hops: 1
> >Message-Id: <H00016dd15cfcf99.1086889550.mail@MHS>
> >Return-Path: normajean.sebastian@tellabs.com
> >X-OriginalArrivalTime: 10 Jun 2004 17:47:27.0782 (UTC)
> >FILETIME=[FEE7B460:01C44F12]
> >
> >
> >how are you buffer hit ratios, and other standard "perf tuning" things
> >(do you have a perf tuning manual to review)?
> >
> >how about you disk system.... do you have caching at that level... i.e.,
> >we have EMC disk storage with a GB or so of cache... that's an extra
> >performance level to check.
> >o/s system running fine to?
> >
> >is your slow response ALL the time or at certain times... what else is
> >happening on the system at those times? (both the DB system and O/S)...
> >maybe backup interference?
> >
> >
> >
> >
> >-----Original Message-----
> >From: sushilps@hotmail.com [mailto:sushilps@hotmail.com]
> >Sent: Thursday, June 10, 2004 11:35 AM
> >To: ids@iiug.org; forum.subscriber@iiug.org
> >Subject: RE: Re.slow response [3097]
> >
> >
> >Hi,
> >
> >Basically we are talking about 6 core tables which we think might be the
> >
> >problem, for these 6 tables we do have detached indexes in its own
> >dbspaces
> >and fragemented by round-robin which also has its own dbspace.
> >
> >sushil...
> >
> > >From: "Russell J. ...." <rclancy@rotech.com>
> > >To: ids@iiug.org
> > >Subject: RE: Re.slow response [3095] Date: Thu, 10 Jun 2004 11:28:37
> >
> > >-0400 (EDT)
> > >Received: from mc3-f18.hotmail.com ([64.4.50.154]) by
> >mc3-s3.hotmail.com
> > >with Microsoft SMTPSVC(5.0.2195.6824); Thu, 10 Jun 2004 08:52:50 -0700
> > >Received: from ace.iiug.org ([216.177.38.212]) by mc3-f18.hotmail.com
> >with
> > >Microsoft SMTPSVC(5.0.2195.6824); Thu, 10 Jun 2004 08:52:04 -0700
> > >Received: from ace.iiug.org (localhost [127.0.0.1])by ace.iiug.org
> > >(8.12.10-14/8.12.8) with ESMTP id i5AFUtFX017545;Thu, 10 Jun 2004
> >11:30:59
> > >-0400 (EDT)
> > >Received: (from nobody@localhost)by ace.iiug.org
> >(8.12.10-14/8.12.8/Submit)
> > >id i5AFSbGM017455;Thu, 10 Jun 2004 11:28:37 -0400 (EDT)
> > >X-Message-Info: jl7Vrt/mfsoDVNgfMplM1uxeMTbYoYxK
> > >Message-Id: <200406101528.i5AFSbGM017455@ace.iiug.org>
> > >Apparently-To: forum.subscriber@iiug.org
> > >Precedence: bulk
> > >Return-Path: nobody@ace.iiug.org
> > >X-OriginalArrivalTime: 10 Jun 2004 15:52:05.0132 (UTC)
> > >FILETIME=[E0AF24C0:01C44F02]
> > >
> > >FWIW, you may want to detach the indexes onto separate disks. If you
> >decide
> > >to do that and know what your indexed data will look like, you might
> >want
> > >to
> > >instead also fragment by expression to even the I/O over the disks.
> > >
> > >Russ
> > >
> > >-----Original Message-----
> > >From: forum.subscriber@iiug.org [mailto:forum.subscriber@iiug.org] On
> > >Behalf
> > >Of JHAYS2@sears.com
> > >Sent: Thursday, June 10, 2004 9:07 AM
> > >To: ids@iiug.org
> > >Subject: Re: Re.slow response [3093]
> > >
> > >Partition your most active tables over separate disks to spread out
> >the=20
> > >I/O.
> > >
> > >Also, could you furnish more info from your config file, especially
> >the=20
> > >area concerning System Config and Shared Memory?
> > >
> > >
> > >
> > >
> > >"Sushil Shir...." <sushilps@hotmail.com>
> > >Sent by: forum.subscriber@iiug.org
> > >06/09/2004 08:27 PM
> > >
> > >=20
> > > To: ids@iiug.org
> > > cc:=20
> > > Subject: Re.slow response [3090]
> > >
> > >
> > >Hello Everybody,
> > >
> > >Env: IDS 9.30 UC3,AIX 5.1. 4 cpu, 8gb ram IBM P660 with fiber channel.
> > >
> > >Our system is running fine with acceptable response, but since our
> >company
> > >=
> > >
> > >
> > >is growing we are getting more transactions/more hits on the database
> > >and=20
> > >started having slow response.
> > >
> > >1) All tables are within 2 extents
> > >2) Indexes/data is in good shape
> > >3) Good update statistics script
> > >
> > >Need suggestion/guidance from you folks as which area we should look
> >after
> > >=
> > >
> > >
> > >and what would
> > >be the problem.
> > >
> > >Thanks in advance,
> > >Sushil...
> > >
> > >=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5
> >F=5F=
> > >=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5
> >F=5F=
> > >=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F
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> > >
> > >
> > >
> > >
> > >
> >
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> >
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