- Community Home
- >
- Servers and Operating Systems
- >
- Operating Systems
- >
- Operating System - HP-UX
- >
- Re: Kernel Parameters
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-18-2009 05:51 AM
тАО08-18-2009 05:51 AM
Kernel Parameters
1) How can I export to a text file, the formulas and values of all kernel parameters in v11.11.
2) Can I backup kernel parameters from v11.11 system and import them in a v11.23 system?
3) Can I still use formulas in kernel parameters in v11.23?
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-18-2009 06:00 AM
тАО08-18-2009 06:00 AM
Re: Kernel Parameters
1) How can I export to a text file, the formulas and values of all kernel parameters in v11.11.
You can use 'kmtune' [which is replaced by 'kctune' on 11.23 and later].
> 2) Can I backup kernel parameters from v11.11 system and import them in a v11.23 system?
I don't believe that you can; nor would you want to do that.
> 3) Can I still use formulas in kernel parameters in v11.23?
Yes, but very often an understanding of the use of a particular parameter means that you can find a more optimal setting by directly fixing a value.
There is a good guide to kernel management in 11.11 and 11.23 here:
http://www.docs.hp.com/en/B2355-90950/index.html
Regards!
...JRF...
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-18-2009 07:13 PM
тАО08-18-2009 07:13 PM
Re: Kernel Parameters
As mentioned: kmtune > /tmp/myparms.txt
> 2) Can I backup kernel parameters from v11.11 system and import them in a v11.23 system?
You don't want to do that at all. Kernel parameters change, new ones are created, others are dropped, and possibly the units of measure may change.
What you want is the list of changed parameters. That is seen in the /stand/system file under the Tunable parameters section. Anything not mentioned in that file is set to the system default.
> 3) Can I still use formulas in kernel parameters in v11.23?
Formulas are a terrible way to set kernel parameters. If you need to change a parameter, convert it to a decimal number and adjust it. The kludge maxusers is meaningless and can set some parameters to outrageous values. They were simplistic assumptions made some 20 years ago and do not have much relevance today. The most common parameters that need to be changed are:
nfile
nproc
dbc_max_pct
maxdsiz
maxdsiz64
maxfiles_lim
npty
nstrpty
nstrtel
and specific to applications and databases, the semaphore and shared memory parameters.
Bill Hassell, sysadmin
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-18-2009 10:09 PM
тАО08-18-2009 10:09 PM
Re: Kernel Parameters
# sysdef > /tmp/sysdef.190809
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-19-2009 12:05 PM
тАО08-19-2009 12:05 PM
Re: Kernel Parameters
> Hakki: # sysdef > /tmp/sysdef.190809
Do NOT use the out-dated 'sysdef'. If available, it's values may not match the correct ones returned by 'k[cm]tune'.
Regards!
...JRF...