Hello,
About the memcached TIMEOUT issue, I have tested the scenario where the
memcached server doesn't reply, and it seems to be working, in the sense
that the cache_fetch function returns a negative response code to the
script, so "if (!cache_fetch())" should work. Could you send me the logs
from when the memcached gives timeout, along with the relevant snippet
from your OpenSIPS script ?
For the distributed dialog profiles, I have committed in 1.8,1.9 and
trunk a fix that solves the prefix issue.
We'll be looking at the ratelimit issue and get back to you.
Best Regards,
Vlad Paiu
OpenSIPS Developer
http://www.opensips-solutions.com
On 02/05/2013 12:32 PM, Brett Nemeroff wrote:
They are separate issues.
I'm getting regular memcache errors like SYSTEM ERROR or TIMEOUT for
just normal script cache_fetchs. They don't happen a whole lot, but
when it does, I get like 10-15 of them all at once. And like I said,
it doesn't appear to return negative so call processing kinda fails
instead of letting me do the proper action when the key is missing.
The errors I'm getting with distributed dialog profiles and
ratelimiting are different. I'm using the prefix modparams for dialogs
and it appears to be truncating those prefixes oddly. Ratelimiting
doesn't appear to have the same prefix issue. Ratelimiting however
also appears to be broken because I have a perfectly idle box showing
counters in rl_list. I'm not really sure what's going on and it's hard
to troubleshoot because ratelimiting inserts a very large integer to
the backend and I'm not sure what it represents.
On Tue, Feb 5, 2013 at 4:27 AM, Bogdan-Andrei Iancu
<[email protected] <mailto:[email protected]>> wrote:
Brett,
I understand you are working with Vlad in troubleshooting the
memcached issues.
But if I understand correctly, you are saying that you are also
getting errors when using distributed dialog profiles but with
couchbase ? If so, what kind of error you get there ?
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com
On 02/05/2013 11:52 AM, Brett Nemeroff wrote:
Bogdan,
Increasing the -R parameter seems to have made the situation
better, but I am without question regularly running into weird
memcache timeout and system errors. I've tried several different
hardware platforms. Point to local and remote memcache servers.
Different memcache libraries and server versions. I've tried
couchbase instead of memcache and I can't get rid of the errors.
I'm really not sure what could be causing them.
When I get them, the call attempting to process fails, which is
frustrating. I'd expect that the memcache result would return
negative which would trigger a direct db query (which is written
in the script in case the cache object is missing anyway).
However it doesn't do this. It just fails and continues
processing a null return value. Is that behavior expected or a bug?
Thanks!
-Brett
On Thu, Jan 24, 2013 at 6:27 AM, Bogdan-Andrei Iancu
<[email protected] <mailto:[email protected]>> wrote:
Hi Brett,
We talked about this on IRC - any luck with it ?
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com
On 01/21/2013 11:31 PM, Brett Nemeroff wrote:
Hey All,
Generally I have really good luck with memcache, but for
some reason, I'm having some issues today.
Once I crank this one box up with load, I start to see these
errors flood my logs:
cachedb_memcached:wrap_memcached_get: Failed to get: SYSTEM
ERROR
cachedb_memcached:wrap_memcached_get: Failed to get: A
TIMEOUT OCCURRED
I've tired changing the tread count for memcache. Additional
processes.. Heck, I've even tried putting memcache on other
servers and in other colos. The original memcache is on the
same box and is pointed at localhost (127.0.1.2).
I'm hitting it reasonably hard, but it should keep up. About
10k ops a sec. I see it run great for like 2 minutes, then
it hangs for like 4 seconds, then picks back up for another
30 seconds or so.. goes that like on and off.
Any idea of what could be wrong?
Thanks,
Brett
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