Comments on: Warning: ASM and large amount of files (on Solaris) http://geertdepaep.wordpress.com/2008/03/05/warning-asm-and-large-amount-of-files-on-solaris/ An extract of my Oracle related opinions Fri, 30 Oct 2009 09:38:14 +0000 http://wordpress.com/ hourly 1 By: odenysenko http://geertdepaep.wordpress.com/2008/03/05/warning-asm-and-large-amount-of-files-on-solaris/#comment-88 odenysenko Wed, 21 Oct 2009 09:25:39 +0000 http://geertdepaep.wordpress.com/?p=11#comment-88 Hi. I have blogged about this situation in http://odenysenko.wordpress.com/2009/06/25/asm-performance-with-huge-number-of-files/ The really bad thing is to revert to good performance without applying specified patch you need to recreate diskgroup. Another issue that supplements it is OEM GC agent that do queries on V$ASM_ quite ofter... and from every node of the cluster. Oleksandr Hi.

I have blogged about this situation in
http://odenysenko.wordpress.com/2009/06/25/asm-performance-with-huge-number-of-files/

The really bad thing is to revert to good
performance without applying specified patch
you need to recreate diskgroup.

Another issue that supplements it is
OEM GC agent that do queries on V$ASM_
quite ofter… and from every node of the cluster.

Oleksandr

]]> By: ASM and large amount of files: follow-up « Oracle at work http://geertdepaep.wordpress.com/2008/03/05/warning-asm-and-large-amount-of-files-on-solaris/#comment-25 ASM and large amount of files: follow-up « Oracle at work Sun, 20 Apr 2008 19:13:06 +0000 http://geertdepaep.wordpress.com/?p=11#comment-25 [...] amount of files: follow-up As promised I will keep you up to date about the problem in my previous post about the issues with ASM on Solaris when a large amount of files exists (or have existed). I can [...] [...] amount of files: follow-up As promised I will keep you up to date about the problem in my previous post about the issues with ASM on Solaris when a large amount of files exists (or have existed). I can [...]

]]> By: pier00 http://geertdepaep.wordpress.com/2008/03/05/warning-asm-and-large-amount-of-files-on-solaris/#comment-22 pier00 Fri, 07 Mar 2008 20:26:59 +0000 http://geertdepaep.wordpress.com/?p=11#comment-22 The blocking effect is under investigation at Oracle Support. Is probably a bug. I just have to wait for further answers. The asm diskstring refers to a directory (/dev/oracle) containing only 2 devices for the 2 luns on the storage. The blocking effect is under investigation at Oracle Support. Is probably a bug. I just have to wait for further answers. The asm diskstring refers to a directory (/dev/oracle) containing only 2 devices for the 2 luns on the storage.

]]> By: Greg Rahn http://geertdepaep.wordpress.com/2008/03/05/warning-asm-and-large-amount-of-files-on-solaris/#comment-21 Greg Rahn Fri, 07 Mar 2008 17:41:43 +0000 http://geertdepaep.wordpress.com/?p=11#comment-21 Have you filed an SR with Oracle support? What is their response? What is asm_diskstring set to? How many devices match that pattern? How many of those devices are provisioned for ASM? For instance, if asm_diskstring='/dev/rdsk/*' what does ls -1 /dev/rdsk/*|wc -l return? I would hesitant to call it a design issue, but it may be a bug that is exacerbated by a long list or something similar. Have you filed an SR with Oracle support? What is their response?

What is asm_diskstring set to?
How many devices match that pattern?
How many of those devices are provisioned for ASM?

For instance, if asm_diskstring=’/dev/rdsk/*’ what does
ls -1 /dev/rdsk/*|wc -l
return?

I would hesitant to call it a design issue, but it may be a bug that is exacerbated by a long list or something similar.

]]>