Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: j2_maxPageReadAhead & j2_nBufferPerPagerDevice and CIO
Top Forums UNIX for Advanced & Expert Users j2_maxPageReadAhead & j2_nBufferPerPagerDevice and CIO Post 302231796 by hariza on Wednesday 3rd of September 2008 07:14:28 AM
Old 09-03-2008
j2_maxPageReadAhead & j2_nBufferPerPagerDevice and CIO
Hi Guys,

At the moment I'm experiencing a problem where one of the filesystems is being locked up because it looks like is running out of buffers and according to IBM a workaround should be decreasing the size of the
j2_maxPageReadAhead. My question is what if I turn on CIO at the filesystem level . I wonder whether enabling CIO then will bypass all these filesystems buffers such as j2_nBufferPerPagerDevice and j2_nBufferPerPagerDevice . Any thoughts?. Actually I forget to mention this is on AIX 5.3.

Harby.
 

4 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

turning CIO on and how to monitor

Hi Guys, I have a database server where we run AIX 5.3 on a power5 box and we just turned on CIO (concurrent I/O) for the database filesystems. Now my assumption is that enabling CIO the database basically will bypass the filesystem cache releasing some extra memory that can be allocated... (1 Reply)
Discussion started by: hariza
1 Replies

2. AIX

turning CIO on and how to monitor

Hi Guys, I have a database server where we run AIX 5.3 on a power5 box and we just turned on CIO (concurrent I/O) for the database filesystems. Now my assumption is that enabling CIO the database basically will bypass the filesystem cache releasing some extra memory that can be allocated... (1 Reply)
Discussion started by: hariza
1 Replies

3. Linux

Is Concurrent I/O (CIO) available on Linux?

Hi Guys, I just wondering if any of the AIX gurus with some exposure to Linux Redhat can tell me whether in Linux ( Red Hat or OpenSuse ) we have a similar option/capability like the CIO (Concurrent I/O) which is currently available on AIX. The reason I'm asking is because in the past we... (2 Replies)
Discussion started by: arizah
2 Replies

4. UNIX for Advanced & Expert Users

CIO in AIX

Hi, I'm reading AIX documentation : Examples 1.To list the mounted file systems, enter: mountThis command produces output similar to the following: node mounted mounted over vfs date options ---- ------- ------------ --- ------------ ... (2 Replies)
Discussion started by: big123456
2 Replies

LEARN ABOUT DEBIAN

mounted

mounted(7)						 Miscellaneous Information Manual						mounted(7)

NAME

       mounted - event signalling that a filesystem has been mounted

SYNOPSIS

       mounted DEVICE=DEVICE MOUNTPOINT=MOUNTPOINT TYPE=TYPE OPTIONS=OPTIONS [ENV]...

DESCRIPTION

       The mounted event is generated by the mountall(8) daemon after it has mounted a filesystem.  mountall(8) will wait for all services started
       by this event to be running, all tasks started by this event to have finished and all jobs stopped by this event to be stopped before emit-
       ting any other events related to this filesystem or continuing with other filesystems depending on this one.

       The DEVICE, MOUNTPOINT, TYPE and OPTIONS environment variables contain the values of the fstab(5) fields for this mountpoint.

EXAMPLE

       A tool that should be run after mounting the /tmp filesystem might use:

	      start on mounted MOUNTPOINT=/tmp
	      task

SEE ALSO

       mounting(7) virtual-filesystems(7) local-filesystems(7) remote-filesystems(7) all-swaps(7) filesystem(7)

mountall							    2009-12-21								mounted(7)
All times are GMT -4. The time now is 08:39 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy