The immortal aioserver Post: 302958334

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Operating Systems AIX The immortal aioserver Post 302958334 by agent.kgb on Wednesday 21st of October 2015 10:39:22 AM

10-21-2015

Registered User

Quote:

Originally Posted by Linusolaradm1

Already play with ioo,i set for test 1 to posix_aio_server_inactivity
and
aio_server_inactivity
But nothing change

if you want to switch aio off, you have to remove some files such as /usr/lib/drivers/aio.ext, set some restricted tunables such as aio_fastpath, and then reboot the server. But I think, your DBA will be very unhappy about it, and you have to obtain IBM permission to change a restricted tunable.

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LEARN ABOUT HPUX

bufpages

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)