RE: OEL4 slowness on VMWare

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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