- Community Home
- >
- Servers and Operating Systems
- >
- Operating Systems
- >
- Operating System - HP-UX
- >
- Re: Semaphores question....
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
тАО07-16-2001 11:08 AM
тАО07-16-2001 11:08 AM
I've a HP-UX 10.20 box whose running Peoplesoft applications, and the developers experienced some problems with their program. In the doc of Peoplesoft they says to increase the UNIX semaphores to resolv the problem... My question is how can I increase the semaphores on my box and does I have to rebuild the kernel to do this???
And by the way, does anybody have some doc on what is the semaphores and how does it work??
Thanks!
Jonathan
Solved! Go to Solution.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-16-2001 11:15 AM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-16-2001 11:20 AM
тАО07-16-2001 11:20 AM
Re: Semaphores question....
Here is a link to a white paper that might help:
http://us-support.external.hp.com/cki/bin/doc.pl/sid=2bb983ac0cd078e3f7/screen=ckiDisplayDocument?docId=200000045206304
JP
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-16-2001 11:21 AM
тАО07-16-2001 11:21 AM
Re: Semaphores question....
The question of "what is a semaphore" came up recently. See here:
http://forums.itrc.hp.com/cm/QuestionAnswer/1,1150,0xef9ce7e60861d511abcd0090277a778c,00.html
For Kernel parameters, see:
http://docs.hp.com/hpux/onlinedocs/os/KCparams.OverviewAll.html
...JRF...
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-16-2001 11:38 AM
тАО07-16-2001 11:38 AM
Re: Semaphores question....
Semaphores is shared memory objects.
you can increase that by using sam (easy way)
sam -> Kernel configuration -> configurable parameters ->
This are the values relate to semaphores
sema 1 1 Static N/A Enable Sys V Semaphores
semaem 16384 16384 Static N/A Max Value for Adjust on Exit Semaphores
semmap 2924 2924 Static N/A Max Number of Semaphore Map Entries
semmni 2922 2922 Static N/A Number of Semaphore Identifiers
semmns 5844 5844 Static N/A Max Number of Semaphores
semmnu 1457 1457 Static N/A Number of Semaphore Undo Structures
semume 64 64 Static N/A Semaphore Undo Entries Per Process
semvmx 32768 32768 Static N/A Semaphore Maximum Value
Sachin
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-17-2001 04:35 AM
тАО07-17-2001 04:35 AM
Re: Semaphores question....
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-17-2001 05:07 AM
тАО07-17-2001 05:07 AM
Re: Semaphores question....
Not necessary to increase the other semaphore parameters. But look at doc given by pplsoft. which parameter they asked to increase(semmax,semmni,or semmin) just increase that parameter. after increasing the parameter you need to rebuild the kernel(after increasing the parameter system prompts you to reboot which then boots with modified kernel)
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-18-2001 04:06 AM
тАО07-18-2001 04:06 AM
Re: Semaphores question....
ipcs -sbp
This lists the Semaphore usage on your system Left Column is Semaphore Identifiers ID. If total number is Equal to semmni then you need to up the limit.
Far right column is Semaphores add these up and Total should not be greater than semmns.
This is a rough guide :-)
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-18-2001 04:15 AM
тАО07-18-2001 04:15 AM
Re: Semaphores question....
Thanks for the help... I will do my kernel update tomorrow... Hope that everything's gonna be find... :)
ciao!