RE: OEL4 slowness on VMWare
- From: "Allen, Brandon" <Brandon.Allen@xxxxxxxxxxx>
- To: "oracle-l" <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 4 Sep 2008 13:19:11 -0700
Just an update - we tested OEL4 64-bit and it is MUCH better as you can
see below. I don't know what the problem was with OEL 32-bit, but just
beware that it may not run well on VMWare and please let me know if you
observe the same or if you have any idea what is causing the slowness.
Thanks,
Brandon
OEL4 32-bit:
->cat /etc/issue
Enterprise Linux Enterprise Linux AS release 4 (October Update 6)
->uname -a
Linux 2.6.9-67.0.0.0.1.ELhugemem #1 SMP Sun Nov 18 00:31:12 EST 2007
i686 i686 i386 GNU/Linux
->sudo /sbin/hdparm -Tt /dev/sdb (repeated 3 times)
Timing cached reads: 732 MB in 1.99 seconds = 368.27 MB/sec
Timing buffered disk reads: 154 MB in 3.00 seconds = 51.27 MB/sec
->date;dd if=/dev/zero of=/u01/oracle/test.dbf bs=8k count=524288;date
Tue Sep 2 15:20:30 MST 2008
524288+0 records in
524288+0 records out
Tue Sep 2 15:23:14 MST 2008
4096/164 = 25MB/sec
OEL4 64-bit:
->cat /etc/issue
Enterprise Linux Enterprise Linux AS release 4 (October Update 7)
->uname -a
Linux 2.6.9-78.0.0.0.1.ELsmp #1 SMP Fri Jul 25 16:04:35 EDT 2008 x86_64
x86_64 x86_64 GNU/Linux
->sudo /sbin/hdparm -Tt /dev/sdb
Timing cached reads: 22028 MB in 2.00 seconds = 11015.67 MB/sec
Timing buffered disk reads: 350 MB in 3.01 seconds = 116.30 MB/sec
->date;dd if=/dev/zero of=/u01/oracle/test3.dbf bs=8k count=524288;date
Thu Sep 4 13:06:10 MST 2008
524288+0 records in
524288+0 records out
Thu Sep 4 13:06:19 MST 2008
4096/9 = 455MB/sec
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