10 Mar
2006
10 Mar
'06
1:52 p.m.
Ok, I changed the order of the users registering to the system to random and
now after all users are registered the load of the system stays constant,
like it should. Thanks to Michael for pointing this out to me. I haven't yet
increased the hash table size, although it would be interesting to see if I
could gain some perfomance that way.
- Teemu
2006/3/10, Teemu Harju <teemu.harju(a)gmail.com>om>:
Hi, Michael
You're right. Why didn't I think of that. :)
I also got instructions from OpenSER mailing list to increase the size of
the hash table by modifying the source of the usrloc, since I'm using so
many users.
Thanks for your comments. I'll report back what were the results with
these modifications.
- Teemu
2006/3/10, Michal Matyska < michal(a)iptel.org>gt;:
--
Teemu Harju
http://www.teemuharju.net
This seems to me quite understandable, the time is consumed while
locating the
usrloc entry. Try to change the "SEQUENTIAL" order to "RANDOM" in
the
SIPP injection file, I suppose you'd then get what you expected, equal
CPU
usage during all the time the test runs. If not, please post it again.
Michal
On Fri, Mar 10, 2006 at 09:57:36AM +0200, Teemu Harju wrote:
--
Teemu Harju
http://www.teemuharju.net
Hi!
I posted about this same subject to openser mailing list already, but
since
I haven't had response from there I'll
try here. I guess the usrloc
module
and the core functionality is quite the same with
ser and openser.
I've been running some performance tests on my OpenSER box and while
registering large number of users I faced some very strange problems.
At
least they seem strange to me, but I hope someone
on this list would
be able
to shed some light on this.
So, I use Openser 1.0.1 and I load test it using SIPp. I've done tests
creating about 1000 registrations per second registering 300k-450k
different
users. Register rate is constat and for each
register different user
is
used. What is strange to me that just about when
300k users have
registered
the CPU of the PC running the proxy hits 100%
usage and messages start
dropping. I made a nice image to illustrate my problem using Excel.
Check it
.
On this test I registered 300k different users at 1000 RPS and after
registering those users the registering starts again from the
beginning. As
you can see from it the CPU usage rises
constantly and drops
immediately
after I've registered 300k users and the
registering starts again from
the
start. So then each user is being registered all
over again, but still
the
CPU load grows. Does anyone have explanation for
this? Why does the
CPU
usage grow based on the number of users
registered? And why does it
drop for
a while when registering starts all over again?
I've tried different
usrloc
modes, but there seems to be no difference. This
one was done with
having
usrloc only in the memory. Shouldn't the CPU
usage at constant
register
rate, be somewhat constant also? Has anyone else
noticed the same
problem?
Could this be somehow explained or do I have
something wrong with my
system?
Regards,
Teemu
--
Teemu Harju
http://www.teemuharju.net
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