All you can really do is use some of the features to scatter the expire times and make them longer to avoid too much load. The presence stuff is very heavy and intensive. On Thu, Dec 18, 2014 at 9:50 AM, François Delawarde < fdelawarde@wirelessmundi.com> wrote:
Still not sure if it's a bug and should be added as a JIRA or if it is an expected behavior for that kind of load.
PS: I tried tweaking "max-db-handles" but it doesn't seem to make any difference with sqlite3 core db in tmpfs.
Regards, François.
On Thu, 2014-12-18 at 12:21 +0100, François Delawarde wrote:
Hi all,
In a decent server (6x core E5-2420 with 16GB RAM) and under a bit of load, I see that FS sends NOTIFY up to a 5 minutes AFTER the actual event, so BLFs are useless when it happens.
Is it a normal/expected behavior? Code suggests that FS can queue up to 50000 events, and presence does lots and lots of DB stuff.
This particular site handles around 4000-5000 subscriptions and up to 2-3 calls per second under load. I use sqlite3 presence.db in tmpfs.
Is there anything that can be done to reduce that huge NOTIFY delay, or do I just have to live with it?
Thanks, François.
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