Hi all,

we are having some performance issues when trying to share memcache amongst several servers.

In a fresh test site, with memcache active only in localhost (the webserver), we got 185 rps doing an ab test.

If we change the host to target memcache in our db server (one with lots of ram), the performance decreases 25% (down to 140 rps). That´s the same of not having any memcached server.

We tried dividing the memcache between the 2 servers, and suffer the same problem.

Is this normal?

We tried some ab tests with mysql on the same machine (the webserver) to find network bottlenecks, but the rps went down just a 3-5%.

Thanks in advance, Simon.

Comments

longwave’s picture

longwave
he/him
Primary language English
Location UK
commented
Status: Active » Fixed

This should be fixed in 6.x-1.x-dev due to the optimisations committed in #911232: A high percentage of getMulti operations are failing to hit cache; please test and reopen if you are still seeing performance problems.

Status: Fixed » Closed (fixed)

Automatically closed -- issue fixed for 2 weeks with no activity.