topic Re: tusc ouptput in Operating System - HP-UX

tusc ouptput

pram — Thu, 10 Jul 2008 20:02:14 GMT

Hi we have a log apply process on our standby database.we want to catch the contention on this at OS Level.We took tusc output but i need your help to analyze that.Please let me know where this process is waiting more.Attatching the tusc output

p sigprocmask(SIG_UNBLOCK, 0x800003ff7fff74f0, NULL) .................................................. = 0
p lseek(389, 339740672, SEEK_SET) ..................................................................... = 339740672
p read(389, "\002E f6\0051002' R [ b101e81be ".., 1048576) ............................................ = 1048576
p lseek(389, 340789248, SEEK_SET) ..................................................................... = 340789248
p read(389, "\002E f6\0051402' R [ b1\0d8T C ".., 1048576) ............................................ = 1048576
p lseek(389, 341837824, SEEK_SET) ..................................................................... = 341837824
p read(389, "\002E f6\0051802' R [ b101( v c5".., 1048576) ............................................ = 1048576
p lseek(389, 342886400, SEEK_SET) ..................................................................... = 342886400
p read(389, "\002E f6\0051c02' R [ b2\0\0w 9d".., 1048576) ............................................ = 1048576

Re: tusc ouptput

rick jones — Fri, 11 Jul 2008 00:04:52 GMT

If you want to see where the process is waiting, you need to enable a few more things in tusc:

*) timstamps
*) entry and exit tracing
*) printing the lwpid if this is a threaded process

Re: tusc ouptput

pram — Fri, 11 Jul 2008 02:35:39 GMT

Hi

thx for your reply ... we are quite new to tusc..can you tell us how to enable the things you have specified...

Regards,
Pramod

Re: tusc ouptput

Dennis Handly — Fri, 11 Jul 2008 04:36:20 GMT

>can you tell us how to enable the things you have specified...

Check the man page of course.
-l Print all lwpids.
-T format Show time stamp for each syscall and signal.
-E Show syscall entries.