Kernel Tunable Paramete not found

[UVA]

Hi,

I need to tune some kernel parameter for my SAP environment, but there some of the kernel parameters are not found like msgmap,msgssz,msgseg, dpc_max_pct, dpc_min_pct and nfile.

It is possble to create these modules and tune the parameter for that...

Thanks

[Jeeshan]

which OS version you are using

[UVA]

Hi,

HP-UX B.11.31 U ia64 0510092437 unlimited-user license

[Dennis Handly]

These no longer exist or are deprecated on 11.31.
Here is what the Release Notes say about nfile:
http://docs.hp.com/en/5991-6469/ch06s06.html#cacdibji

[Sanjay Yugal Kishore Ha]

Hello,

The System V IPC message queue related kernel tunables(paramaters) are now managed via msgmnb(5), msgmni(5), msgmbs(5), msgtql(5). Read the mesg(5) manual for details.

The dbc_* are managed by filechache_max(5) while the nfile is managed by maxfiles and nproc. Again, refere the manuals.

HTH,
Sanjay

[Darrel Louis]

Hi.

HP-UX11iv2:
http://www.docs.hp.com/en/B2355-60105/bufpages.5.html

HP-UX 11iv3:
http://docs.hp.com/en/5991-6469/5991-6469.pdf

Open file table restructured (nfile tunable no longer needed)
â The system open file table was restructured in HP-UX 11i v3 to remove previous architectural limitations, and, therefore, the need to tune the nfile tunable is removed.

Obsolete buffer cache tunables: bufcache_max_pct, bufpages, dbc_min_pct,
dbc_max_pct, or nbuf
â These tunables are obsolete and removed. Attempting to tune any of the obsolete
buffer cache tunables, bufcache_max_pct, bufpages, dbc_min_pct,
dbc_max_pct, or nbuf results in an error.
â If needed, customers should use the tunables filecache_max (5) and
filecache_min (5) to set limits on the file cache. Note that, on any given system,
the optimum values of these two new file cache tunables are not necessarily
equivalent to the optimum values of the obsolete buffer cache tunable values in
the older systems. Customers should first determine if the default/automatic
values yield acceptable performance on their system, before attempting to
change the values of the new file cache tunables.

Goodluck
Darrel