Sponsored Content
Full Discussion: AIO on AIX 6.1
Operating Systems AIX AIO on AIX 6.1 Post 302556297 by zxmaus on Saturday 17th of September 2011 10:22:04 PM
Old 09-17-2011
Hi

AIO subsystems are in 6.1 and later loaded by default and not activated. They are automatically started at the time when the application initiates the AIO I/O requests, aio_active and posix_aix_active can only be changed by AIX, and they are set to 1 only when AIO kernel extensors are used and pinned - in other words if the application is actively trying to use it. When in your case posix is off, than the application doesnt want to use it. The tunables fastpath and fsfastpath are now restricted tunables and set to 1 by default.
Hope this helps,
regards
zxmaus
 

7 More Discussions You Might Find Interesting

1. AIX

IY17981 fix required for aix 4.3.3 to aix 5L migration but not found

Hi, redbook documentation is telling that IY17981 fix is required for aix 4.3.3 to aix 5L migration. But there is no mention about that fix in any ML installation packages. - My system is ML11 : oslevel –r 4330-11 - But xlC.rte is on wrong version : lslpp -L xlC.rte xlC.rte ... (3 Replies)
Discussion started by: astjen
3 Replies

2. Red Hat

How to enable AIO and DIO on rhel5 64bit?

Hi Friends, Please help me to understand, how to enable async disk IO and Direct disk IO in ext3 filesystem on rhel5. Regards, Arumon (0 Replies)
Discussion started by: arumon
0 Replies

3. AIX

how to check AIO running on /usr2

Hello guys, help me out on this.. I am not so well versed in this AIO. How do tell if AIO is running for /usr2 ? From what i see / usr2 is JFS2. Here some information: Name Nodename Mount Pt VFS Size Options Auto Accounting /dev/hd4 -- / jfs 1835008 -- yes no /dev/hd1 -- /home jfs... (3 Replies)
Discussion started by: wingcross
3 Replies

4. AIX

Nim on AIX 7.1 used to migrate AIX 5.3 to AIX 6.1...is possible?

Using nimadm: nimadm -j nimadmvg -c sap024 -s spot_6100 -l lpp_6100 -d "hdisk1" -Y Initializing the NIM master. Initializing NIM client sap024. 0505-205 nimadm: The level of bos.alt_disk_install.rte installed in SPOT spot_6100 (6.1.3.4) does not match the NIM master's level (7.1.1.2).... (2 Replies)
Discussion started by: sciacca75
2 Replies

5. AIX

Will it affect my AIX LPAR security, when i set up email alerts on AIX server.

Hello, I've set up email alerts on AIX Servers. so that i can get email notifications (via mail relay server) when ever there is abnormal behavior. for example 1) my script monitors CPU/disk/memory etc... when it reaches high water ark, it will send an email alert. 2) disk usage alerts 3)... (5 Replies)
Discussion started by: System Admin 77
5 Replies

6. AIX

AIO workaround AIX 5.3 to AIX 7.1

Hello Folks, Facing a problem starting Apache Services on AIX 7.1 This is the error i'm getting /oraapp/prodora/iAS/Apache/Apache/bin/apachectl start: httpd started Syntax error on line 17 of /oraapp/prodora/iAS/Apache/modplsql/cfg/plsql_pls.conf: Cannot load... (0 Replies)
Discussion started by: filosophizer
0 Replies

7. AIX

Samba 3.6 on AIX 7.1 - Windows 10 Access to AIX file shares using Active Directory authentication

I am running AIX 7.1 and currently we have samba 3.6.25 installed on the server. As it stands some AIX folders are shared that can be accessed by certain Windows users. The problem is that since Windows 10 the guest feature no longer works so users have to manually type in their Windows login/pwd... (14 Replies)
Discussion started by: linuxsnake
14 Replies
dbc_max_pct(5)							     OBSOLETED							    dbc_max_pct(5)

NAME
dbc_max_pct, dbc_min_pct, bufcache_max_pct, bufpages, nbuf - OBSOLETED kernel tunable parameter DESCRIPTION
These tunables have been obsoleted and removed. Do not make any changes to these tunables, as they have no effect on the kernel. Use the file cache tunables and (see filecache_max(5)). In previous releases, the tunables and were used to set limits to the dynamic buffer cache, and the tunables and were used for tuning the buffer cache when a static cache was desired. This release of HP-UX offers improved file caching technology and improved physical memory control associated to caching file I/O data. The number of tunable parameters used to control file caching memory usage is reduced from five to two, and previous usability issues are addressed. Restrictions on Changing These tunables should not be modified. Attempting to tune any of the obsolete buffer cache tunables, or results in an error. Use the tunables and to set limits on the file cache. Note that, on a any given system, the optimum values of these two new tunables are not necessarily equivalent to the optimum values of the obsolete buffer cache tunable values in the older systems. You should first deter- mine if the new default values yield acceptable performance on your system, before attempting to change the values of the new file cache tunables. AUTHOR
and were developed by HP. SEE ALSO
filecache_max(5). Kernel Tunable Parameter dbc_max_pct(5)
All times are GMT -4. The time now is 12:20 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy