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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Unix performance
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you say kernel configuration....you include memory paging parameters, flush cycles, etc?
Also, doubt this is it, but are the users and filesystems "identical" as well? including filesystem creation parameters?
-----Original Message-----
From: hp [mailto:hp_at_lechateau.ca]
Sent: Tuesday, January 09, 2001 4:42 PM
To: Multiple recipients of list ORACLE-L
Subject: Unix performance
I realize this is probably not the right palce for this put i have a puzzeling question
We have recently purchased a second server with the exact same hardware as our production server and are currently in the process of performing performance tests. Both servers have exactly the same the hardware configuration and exactly the same software configuration ( kernel configuration, patch levels).
and after running this simple loop that simply does a few basic mathmatic opertions, our production server does the loop in 40secs and our new server does the loop in 10secs. Does anyont konw what could cause such a drastic differnce in doing a simple math operation. and yes both tests were performed with no other users on the servers. this is the loop:
cnt=1
while [ $cnt -lt 10000 ]; do
let a=$cnt*785432/43243*7845+54
let cnt=$cnt+1
done
-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: hp INET: hp_at_lechateau.ca Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). ------_=_NextPart_001_01C07A87.33972150 Content-Type: text/html; charset="iso-8859-1"Received on Tue Jan 09 2001 - 15:57:47 CST
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<P><FONT SIZE=2>you say kernel configuration....you include</FONT>
<BR><FONT SIZE=2>memory paging parameters, flush cycles, etc?</FONT>
</P>
<P><FONT SIZE=2>Also, doubt this is it, but are the users and</FONT>
<BR><FONT SIZE=2>filesystems "identical" as well? including</FONT>
<BR><FONT SIZE=2>filesystem creation parameters?</FONT>
</P>
<P><FONT SIZE=2>-----Original Message-----</FONT>
<BR><FONT SIZE=2>From: hp [<A HREF="mailto:hp_at_lechateau.ca">mailto:hp_at_lechateau.ca</A>]</FONT>
<BR><FONT SIZE=2>Sent: Tuesday, January 09, 2001 4:42 PM</FONT>
<BR><FONT SIZE=2>To: Multiple recipients of list ORACLE-L</FONT>
<BR><FONT SIZE=2>Subject: Unix performance</FONT>
</P>
<BR>
<P><FONT SIZE=2>I realize this is probably not the right palce for this put i have a</FONT>
<BR><FONT SIZE=2>puzzeling question</FONT>
</P>
<P><FONT SIZE=2>We have recently purchased a second server with the exact same hardware as</FONT>
<BR><FONT SIZE=2>our production server and are currently in the process of performing</FONT>
<BR><FONT SIZE=2>performance tests. Both servers have exactly the same the hardware</FONT>
<BR><FONT SIZE=2>configuration and exactly the same software configuration ( kernel</FONT>
<BR><FONT SIZE=2>configuration, patch levels).</FONT>
</P>
<P><FONT SIZE=2>and after running this simple loop that simply does a few basic mathmatic</FONT>
<BR><FONT SIZE=2>opertions, our production server does the loop in 40secs and our new server</FONT>
<BR><FONT SIZE=2>does the loop in 10secs. Does anyont konw what could cause such a drastic</FONT>
<BR><FONT SIZE=2>differnce in doing a simple math operation. and yes both tests were</FONT>
<BR><FONT SIZE=2>performed with no other users on the servers.</FONT>
<BR><FONT SIZE=2>this is the loop:</FONT>
</P>
<P><FONT SIZE=2>cnt=1</FONT>
<BR><FONT SIZE=2>while [ $cnt -lt 10000 ]; do</FONT>
<BR><FONT SIZE=2>let a=$cnt*785432/43243*7845+54</FONT>
<BR><FONT SIZE=2>let cnt=$cnt+1</FONT>
<BR><FONT SIZE=2>done</FONT>
<BR><FONT SIZE=2>-- </FONT>
<BR><FONT SIZE=2>Please see the official ORACLE-L FAQ: http://www.orafaq.com</FONT>
<BR><FONT SIZE=2>-- </FONT>
<BR><FONT SIZE=2>Author: hp</FONT>
<BR><FONT SIZE=2> INET: hp_at_lechateau.ca</FONT>
</P>
<P><FONT SIZE=2>Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051</FONT>
<BR><FONT SIZE=2>San Diego, California -- Public Internet access / Mailing Lists</FONT>
<BR><FONT SIZE=2>--------------------------------------------------------------------</FONT>
<BR><FONT SIZE=2>To REMOVE yourself from this mailing list, send an E-Mail message</FONT>
<BR><FONT SIZE=2>to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in</FONT>
<BR><FONT SIZE=2>the message BODY, include a line containing: UNSUB ORACLE-L</FONT>
<BR><FONT SIZE=2>(or the name of mailing list you want to be removed from). You may</FONT>
<BR><FONT SIZE=2>also send the HELP command for other information (like subscribing).</FONT>
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