Hi,
I have a bit of a NFS problem on AiX 6.1 : When I set the mount to cio and dio - needed for a database app - Everything slows down. The following is copying 700mb, top one is a normal mount bottom one is a mount with the cio/dio option enabled :
# ./a.sh
Wed Jan 11 11:41:24 GMT 2012... (5 Replies)
I understand that AIO is not something that you turn on in AIX 6.1 but I am getting a request to turn on posix aio. I am guessing a value of 0 means it's off but not sure.
root@foobar:/> ioo -a | grep active
aio_active = 1
posix_aio_active = 0
When I... (1 Reply)
Hi:
I am very sorry,I am not good at english.
Please help me,I use rhel5.3 64bit OS,I can not combine swftools-0.9.0.tar.gz; but I use rhel5.3 32bit OS,I done.
anybody have some question.
Thanks (0 Replies)
hey, I believe I once saw a post in this forum, about enable an GCC option to enable long types. I simply cannot find it any more. Can anybody give me a hint? I am on 32bit Ubuntu, and I would like my int be really long. Also I need malloc() take long int argument too.
I found it is necessary to... (6 Replies)
Hi Guys,
I wonder if after enabling CIO/DIO at the filesystem level and assuming that CIO/DIO will bypass the JFS2 read ahead available when not using CIO/DIO my questionis what parameters I can play with to tune/improve the CIO in order to obtain similar performance for sequential reads (... (7 Replies)
I just noticed from /proc/cpuinfo, it only show up 1 processor. We have at least 8 processors. How can I enable all these processors in RHEL 5.1?
cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 26
model name : Genuine... (1 Reply)
QUOTAON(8) BSD System Manager's Manual QUOTAON(8)NAME
quotaon, quotaoff -- turn filesystem quotas on and off
SYNOPSIS
quotaon [-g] [-u] [-v] filesystem ...
quotaon [-g] [-u] [-v] -a
quotaoff [-g] [-u] [-v] filesystem ...
quotaoff [-g] [-u] [-v] -a
DESCRIPTION
quotaon announces to the system that disk quotas should be enabled on one or more filesystems. quotaoff announces to the system that the
specified filesystems should have any disk quotas turned off. The filesystems specified must have entries in /etc/fstab and be mounted.
quotaon expects each filesystem to have quota files named quota.user and quota.group which are located at the root of the associated file
system. These defaults may be overridden in /etc/fstab. By default both user and group quotas are enabled.
Available options:
-a If the -a flag is supplied in place of any filesystem names, quotaon/quotaoff will enable/disable all the filesystems indicated in
/etc/fstab to be read-write with disk quotas. By default only the types of quotas listed in /etc/fstab are enabled.
-g Only group quotas listed in /etc/fstab should be enabled/disabled.
-u Only user quotas listed in /etc/fstab should be enabled/disabled.
-v Causes quotaon and quotaoff to print a message for each filesystem where quotas are turned on or off.
Specifying both -g and -u is equivalent to the default.
FILES
quota.user at the filesystem root with user quotas
quota.group at the filesystem root with group quotas
/etc/fstab filesystem table
SEE ALSO quota(1), libquota(3), fstab(5), edquota(8), quotacheck(8), repquota(8)HISTORY
The quotaon command appeared in 4.2BSD.
BSD December 11, 1993 BSD
How to enable AIO and DIO on rhel5 64bit?