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Home -> Community -> Mailing Lists -> Oracle-L -> RE: performance issues on sun
Its on a different mountpoint (and disk) from the index or the temp tablespaces
Its 1 Mb. I have done the tests with as much as 250M but same results
If I do a simple cp, I am not able to see any big performance difference
Thanks a lot...
Babu
DENNIS WILLIAMS
<DWILLIAMS_at_LIFETO To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
UCH.COM> cc:
Sent by: Subject: RE: performance issues on sun
root_at_fatcity.com
02/25/03 10:14 AM
Please respond to
ORACLE-L
Babu - I would recommend checking:
Dennis Williams
DBA, 40%OCP, 100% DBA
Lifetouch, Inc.
dwilliams_at_lifetouch.com
-----Original Message-----
Sent: Tuesday, February 25, 2003 8:11 AM
To: Multiple recipients of list ORACLE-L
All
We are attempting to move some applications off Compaq T64 into Sun Solaris 8 and running into performance issues.
I am trying to rebuild an index which is taking more than 3 1/2 hours while it used to take < 20 min on T64.
I find most of the waits on DIRECT PATH READS and DIRECT PATH WRITES. The index tablespace and the temporary tablespace are on separate mountpoints which reside on separate disks.
I am doing a "truss" on the session and see that its doing the following
kaio(AIOWAIT, 0xFFFFFFFFFFFFFFFF) Err#22 EINVAL pread(364, "\b02\0\0\v\099E1 f h ECB".., 1048576, 0x26784000) = 1048576 kaio(AIOWAIT, 0xFFFFFFFFFFFFFFFF) Err#22 EINVALlwp_cond_wait(0xFFFFFFFF7CED7F70, 0xFFFFFFFF7CED7F80, 0x00000000) = 0
pwrite(408, "0602\0\0\nC41007 f h SDD".., 49152, 0x10401C000) = 49152 pwrite(408, "0602\0\0\nC410\n f h SDD".., 49152, 0x104028000) = 49152 pwrite(408, "0602\0\0\nC410\r f h SDD".., 49152, 0x104034000) = 49152 pwrite(408, "0602\0\0\nC41010 f h SDD".., 49152, 0x104040000) = 49152 pwrite(408, "0602\0\0\nC41013 f h SDD".., 49152, 0x10404C000) = 49152 pwrite(408, "0602\0\0\nC41016 f h SDD".., 49152, 0x104058000) = 49152 pwrite(408, "0602\0\0\nC41019 f h SDD".., 49152, 0x104064000) = 49152 pwrite(408, "0602\0\0\nC4101C f h SDD".., 49152, 0x104070000) = 49152 pwrite(408, "0602\0\0\nC4101F f h SDD".., 49152, 0x10407C000) = 49152 pwrite(408, "0602\0\0\nC410 " f h SDD".., 49152, 0x104088000) = 49152 pwrite(408, "0602\0\0\nC410 % f h SDD".., 49152, 0x104094000) = 49152 pwrite(408, "0602\0\0\nC410 ( f h SDD".., 49152, 0x1040A0000) = 49152 pwrite(408, "0602\0\0\nC410 + f h SDD".., 49152, 0x1040AC000) = 49152 pwrite(408, "0602\0\0\nC410 . f h SDD".., 49152, 0x1040B8000) = 49152 pwrite(408, "0602\0\0\nC410 1 f h SDD".., 49152, 0x1040C4000) = 49152 pwrite(408, "0602\0\0\nC410 4 f h SDD".., 49152, 0x1040D0000) = 49152 fdsync(408, O_RDONLY|O_SYNC) = 0 pwrite(408, "0602\0\0\nC410 7 f h SDE".., 49152, 0x1040DC000) = 49152 pwrite(408, "0602\0\0\nC410 : f h SDE".., 49152, 0x1040E8000) = 49152 pwrite(408, "0602\0\0\nC410 = f h SDE".., 49152, 0x1040F4000) = 49152 pwrite(408, "0602\0\0\nC410 @ f h SDE".., 49152, 0x104100000) = 49152 pwrite(408, "0602\0\0\nC410 C f h SDE".., 49152, 0x10410C000) = 49152 lwp_cond_wait(0xFFFFFFFF7CF0DF70, 0xFFFFFFFF7CF0DF80, 0x00000000) = 0 lwp_cond_signal(0xFFFFFFFF7CF0DF70) = 0pread(364, "\b02\0\0\v\09A ! f h ECB".., 16384, 0x26884000) = 16384
I think it is trying to do a KAIO call and failing. Then it attempts a synchronous PWRITE call.
But our SAs are not able to help us to confirm this. Have any of you seen this issue?
Any inputs would be greatly appreciated. I'll gladly provide you with addl info if you need.
Thanks in advance
Babu
-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: INET: babu.nagarajan_at_Cummins.com Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- 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). -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: DENNIS WILLIAMS INET: DWILLIAMS_at_LIFETOUCH.COM Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- 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). _____________ This e-mail transmission and any attachments to it are intended solely for the use of the individual or entity to whom it is addressed and may contain confidential and privileged information. If you are not the intended recipient, your use, forwarding, printing, storing, disseminating, distribution, or copying of this communication is prohibited. If you received this communication in error, please notify the sender immediately by replying to this message and delete it from your computer. -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: INET: babu.nagarajan_at_Cummins.com Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- 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).Received on Tue Feb 25 2003 - 10:15:34 CST
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