topic Re: Monitoring the swapping shared memory segment in Operating System - HP-UX

Monitoring the swapping shared memory segment

Alex Vinokur — Tue, 12 Apr 2011 10:03:59 GMT

Hi,

HP-UX v2 and v3.

Can we monitor what part (pages, percent) of the shared memory segment is swapped?
Any system calls/UNIX-utilities?

Thanks

Alex

Re: Monitoring the swapping shared memory segment

James R. Ferguson — Tue, 12 Apr 2011 12:30:02 GMT

HI Alex:

Look at 'ipcs(1) and 'pstat(2)'; in particular, 'pst_shminfo(2)', though its not clear to me if you are going to be able to ascertain the details you want.

Regards!

...JRF...

Re: Monitoring the swapping shared memory segment

Dennis Handly — Wed, 13 Apr 2011 09:18:53 GMT

>JRF: pst_shminfo(2), though its not clear to me if you are going to be able to ascertain the details you want.

After you look this up, you may have to scan all of the PIDs with pstat_getprocvm(2):

struct __pst_vm_status {
_T_ULONG_T pst_vaddr; /* virtual offset for this object */
_T_LONG_T pst_length; /* number of pages mapped by this object */
_T_LONG_T pst_phys_pages; /* number of incore pages for this object*/

Re: Monitoring the swapping shared memory segment

Alex Vinokur — Wed, 13 Apr 2011 11:59:28 GMT

James & Dennis, thank you.