Re: SERVER_ERROR out of memory storing object with memcached 1.4.10
El 09/01/12 06:12, dormando escribió: Hey, could you please try to reproduce the issue with 1.4.11-beta1: http://code.google.com/p/memcached/wiki/ReleaseNotes1411beta1 I've closed the logic issues and fixed a few other things besides. Would be very good to know if you're still able to bug it out. Thanks! -Dormando Using 1.4.11-beta1 I can't reproduce out of memory storing object error, thanks! --Santi
all our memcached servers failing w/ EPIPE from time to time, but ...
Hey all, we have a sharded memcached cluster of 5 nodes. Last week we once had a problem that one of our memcached servers had really big issues, and only a cold process restart helped getting it back. The phenomena was/is that we had lots of memcached clients getting an EPIPE, and as soon as we identified the failing memcached node and could not connect using fresh tiny test-scripts nor directly either. First we thought it *MIGHT* be also a hardware issue, or whatnot, and we wrote a monitoring test (checking every memcached node every 10 seconds individually connecting to it, test-writing, rereading and comparing the values, and report on error). The result though, is, that we get EPIPEs and even rare EOFs quite regulary, not that often that we (do not yet know, we) should care about, but we now know of **two** cases where we had a peak EPIPE scenario (one very big, one somewhat big) where once only a restart helped. We came to the conclusion, that it definitely might some issue with the software itself, and though, seek help from upstream, in the hope to get any kind of advise, help, or whatever you think that might help us in getting such things fixed. FYI: the clients are all ruby using standard gem redis version 2.1.1 and memcached version 1x 1.4.4 and 4x 1.4.2. Many thanks for any thoughts :) Christian Parpart.
Re: SERVER_ERROR out of memory storing object with memcached 1.4.10
El 09/01/12 06:12, dormando escribió: Hey, could you please try to reproduce the issue with 1.4.11-beta1: http://code.google.com/p/memcached/wiki/ReleaseNotes1411beta1 I've closed the logic issues and fixed a few other things besides. Would be very good to know if you're still able to bug it out. Thanks! -Dormando Using 1.4.11-beta1 I can't reproduce out of memory storing object error, thanks! Awesome! Thanks for verifying so quickly. I'll try to wrap this up into an -rc1 today. Hoping some other people try it too :)
Storage Engine ?
There are archived discussions floating around about this subject, particularly with SSD. Are there open source works (implementation, src code, interface description, etc) available for people to take a look ? Thanks, Wendy
Re: Storage Engine ?
There are archived discussions floating around about this subject, particularly with SSD. Are there open source works (implementation, src code, interface description, etc) available for people to take a look ? There is a working and well used engine implementation in the engine-pu branch: https://github.com/memcached/memcached/tree/engine-pu There's also a download on the google code site of an older beta release of 1.6.0. Included in the source tree is the default engine, which should serve as a good example. Others exist if you google around.
Re: Storage Engine ?
On Monday, January 9, 2012 2:13:36 PM UTC-8, Wendy Cheng wrote: Found an expired RFC at http://code.google.com/p/memcached/wiki/EngineInterface. Look pretty old though. Wondering whether there are (open source) implementation works associated with it ? It's pretty solid (in production under heavy load in numerous sites) and a few of us have a lot of experience writing engines. Please do ask questions.
Re: Storage Engine ?
On Mon, Jan 9, 2012 at 2:21 PM, dormando dorma...@rydia.net wrote: There are archived discussions floating around about this subject, particularly with SSD. Are there open source works (implementation, src code, interface description, etc) available for people to take a look ? There is a working and well used engine implementation in the engine-pu branch: https://github.com/memcached/memcached/tree/engine-pu There's also a download on the google code site of an older beta release of 1.6.0. Included in the source tree is the default engine, which should serve as a good example. Others exist if you google around. Cool ! I'm pulling the code right now. Great thanks ! ... Wendy
