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<P DIR=LTR><SPAN LANG="en-gb"></SPAN><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">The chap below sent th</FONT></SPAN><SPAN LANG="en-gb"></SPAN><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">is</FONT></SPAN><SPAN LANG="en-gb"></SPAN><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New"></FONT></SPAN><SPAN LANG="en-gb"></SPAN><SPAN LANG="en-gb"> <FONT COLOR="#0000FF" FACE="Courier New">comment</FONT></SPAN><SPAN LANG="en-gb"></SPAN><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New"></FONT></SPAN><SPAN LANG="en-gb"></SPAN><SPAN LANG="en-gb"> <FONT COLOR="#0000FF" FACE="Courier New">to the list a while back, perhaps</FONT></SPAN><SPAN LANG="en-gb"></SPAN><SPAN LANG="en-gb"> <FONT COLOR="#0000FF" FACE="Courier New">it’s a</FONT></SPAN><SPAN LANG="en-gb"></SPAN><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New"> page file issue</FONT></SPAN><SPAN LANG="en-gb"></SPAN><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">,</FONT></SPAN><SPAN LANG="en-gb"></SPAN><SPAN LANG="en-gb"></SPAN></P>
<UL DIR=LTR><UL DIR=LTR>
<P DIR=LTR><SPAN LANG="en-gb"></SPAN><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Try executing the commands from</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">SYS$STARTUP:VMS$CONFIG-050_JOBCTL.COM to see what</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">pagefile quota you get.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">$page_size = f$getsyi("page_size") / 512</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">$total_page = f$getsyi("pagefile_page") * page_size</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">$min_jobctl_pagelets = 40960</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">$if total_page .lt. 2*min_jobctl_pagelets</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">$then pagefile = min_jobctl_pagelets</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">$else pagefile = total_page/2</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Now compare it with the actual quota for JOB_CONTROL</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">and QUEUE_MANAGER using</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">$ pgflquota=F$GETJPI(pid,"PGFLQUOTA")</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">(where "pid") is the PID of JOB_CONTROL and then</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">QUEUE_MANAGER.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Track the page file consumption over time by running a</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">periodic job - say every 5 minutes which finds the</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">PAGFILCNT. Does it increase over time?</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">You may have to raise your pagefile quota. Corner one</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">of your VMS guys and pick his brain.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Mark Stewart</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Windsor, Ontario</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Canada</FONT></SPAN><SPAN LANG="en-gb"></SPAN><SPAN LANG="en-gb"></SPAN></P>
</UL></UL>
<P DIR=LTR><SPAN LANG="en-gb"></SPAN><SPAN LANG="en-gb"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"></SPAN><SPAN LANG="en-gb"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"></SPAN><SPAN LANG="en-gb"></SPAN><SPAN LANG="en-us"><FONT COLOR="#0000FF" FACE="Courier New">-----Original Message-----<BR>
From: powerh-l-bounces+atla38=dsl.pipex.com@lists.sowder.com [<A HREF="mailto:powerh-l-bounces+atla38=dsl.pipex.com@lists.sowder.com">mailto:powerh-l-bounces+atla38=dsl.pipex.com@lists.sowder.com</A>] On Behalf Of Joe Boyle<BR>
Sent: 22 January 2007 22:49<BR>
To: powerh-l@lists.sowder.com<BR>
Cc: 'Desmond Dujon'<BR>
Subject: RE: System Optimization</FONT></SPAN><SPAN LANG="en-gb"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"></SPAN><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">You mention Quiz specifically; do you also have issues with writes and</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">rewrites to the files in terms of time taken to complete ? If so, this could</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">be due to heavily repeating keys, and would be helped by archiving off as</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">much data as possible ( followed by a rebuild).</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">It might be worth rebuilding one or two files using FDL utilities. If there</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">are significant size differences in the 'before' and 'after' files, this</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">would suggest that there are lots of logical deletes in the files which</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">might be slowing things down. </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">If there are large subfiles being created, it might be worth pointing them</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">at a disk with plenty of free disk space, as RMS may be spending lots of</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">time searching for free block allocations if the disk is heavily allocated. </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">If the data clusters are very segmented over the disk, this would also slow</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">down disk head reads, and once again a rebuild on a 'clean' disc might help</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">improve performance. </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">You could even run an analyse on the file data block distribution, and if</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">you have someone with RMS data file structure knowledge, they might be able</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">to tweak the data block allocations for the various index and data levels,</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">which might also speed things up.</FONT></SPAN></P>
<BR>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">-----Original Message-----</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">From: powerh-l-bounces+atla38=dsl.pipex.com@lists.sowder.com</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">[<A HREF="mailto:powerh-l-bounces+atla38=dsl.pipex.com@lists.sowder.com">mailto:powerh-l-bounces+atla38=dsl.pipex.com@lists.sowder.com</A>] On Behalf Of</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Ken Langendock</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Sent: 22 January 2007 22:03</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">To: powerh-l@lists.sowder.com</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Cc: 'Desmond Dujon'</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Subject: RE: System Optimization</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Adding the VIAINDEX may help you but remember you will have to remove</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">them if you go to any other database/platform.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Forcing the index path is not efficient if you are planning on changing</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">to a relational db.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Optimizing the tables is a good bet. Keeping the number of indexes to a</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">minimum and using segmented indexes helps.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Ken</FONT></SPAN></P>
<BR>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">-----Original Message-----</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">From: powerh-l-bounces+ken.langendock=rogers.com@lists.sowder.com</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">[<A HREF="mailto:powerh-l-bounces+ken.langendock=rogers.com@lists.sowder.com">mailto:powerh-l-bounces+ken.langendock=rogers.com@lists.sowder.com</A>] On</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Behalf Of Darren Reely</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Sent: January 22, 2007 4:50 PM</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">To: powerh-l@lists.sowder.com</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Cc: Desmond Dujon</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Subject: Re: System Optimization</FONT></SPAN></P>
<BR>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">It has been 10 years, so my memory is a little vague. One important </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">lesson I learned was to reference your indexes. Don't rely on the </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">compiler doing the right thing.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">I once was trying to figure out why a report was taking 2.5 hrs to run. </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">When I looked at the code it was obvious. The coder of the Quiz program </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">did not specify which indexes to use. I added index specifiers with the </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">'VIAINDEX' structure and the report ran in under 15 minutes.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">I used to also have the systems guy optimize my tables every once in a </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">while. This helped the above mentioned report a few times until I could </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">take a look at the code. It saved maybe 20% of the run time. I really </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">don't remember any details of what they did.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Darren</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">Desmond Dujon wrote:</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">> Hi folks.Happy new year.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">></FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">> Are there any commands /parameter changes ( apart from</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">> autogen) you can suggest to speed up performance on</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">> our ES47 Alpha server running OpenVMS 7.3 , Powerhouse</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">> 7.10.g3. Some of our quiz reports involve alot of</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">> calculationa , take hours to run and are very cpu</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">> intensive. Most of the files accessed (RMS files) are </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">> 700,000 blocks and less. No database is used. </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">> </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">-- </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-gb"><FONT COLOR="#0000FF" FACE="Courier New">= = = = = = = = = = = = = = = = = = = = = = = = = = = =</FONT></SPAN></P>
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