On Thursday, February 14, 2013 1:24:52 PM UTC+4, [email protected] wrote: > > Hello All !)) > I have a some problem. > We have 3 memcached nodes cluster (memcached version: 1.4.5). > Average loading on every node is about 300-350 req/s. > We are interacting with memcached throw JAVA-API (net.spy.memcached) > But sometimes (very rarely) we gets error lines in our application log, as > folowing: > > 01:00:59 ERROR Error: Out of memory > 01:30:01 ERROR Error: Out of memory > 03:30:25 ERROR Error: Out of memory > 11:11:16 ERROR Error: Out of memory > > > I can't found any dependencies between these errors and software > environment. > And anything: > I found "outofmemory" errors on some slabs (stats slabs and stats items > requests) as folowing: > > server 1: > > stats settings > STAT maxbytes 2147483648 > STAT maxconns 1024 > STAT tcpport 11211 > STAT udpport 11211 > STAT inter NULL > STAT verbosity 0 > STAT oldest 26962889 > STAT evictions on > STAT domain_socket NULL > STAT umask 700 > STAT growth_factor 1.25 > STAT chunk_size 48 > STAT num_threads 30 > STAT stat_key_prefix : > STAT detail_enabled no > STAT reqs_per_event 20 > STAT cas_enabled yes > STAT tcp_backlog 1024 > STAT binding_protocol auto-negotiate > STAT auth_enabled_sasl no > STAT item_size_max 1048576 > > stats items > ........ > STAT items:39:number 1 > STAT items:39:age 27457197 > STAT items:39:evicted 3720 > STAT items:39:evicted_nonzero 3 > STAT items:39:evicted_time 10 > STAT items:39:outofmemory 41 > STAT items:39:tailrepairs 0 > STAT items:39:reclaimed 0 > .......... > > stats slabs > ... > STAT 39:chunk_size 493552 > STAT 39:chunks_per_page 2 > STAT 39:total_pages 1 > STAT 39:total_chunks 2 > STAT 39:used_chunks 1 > STAT 39:free_chunks 1 > STAT 39:free_chunks_end 0 > STAT 39:mem_requested 415638 > STAT 39:get_hits 562215 > STAT 39:cmd_set 568308 > STAT 39:delete_hits 0 > STAT 39:incr_hits 0 > STAT 39:decr_hits 0 > STAT 39:cas_hits 0 > STAT 39:cas_badval 0 > .... > STAT active_slabs 42 > STAT total_malloced 2151880632 > > > On server 2 we have the same situation, but outofmemory: 9 > On server 3 is all OK > > So, we have 50 "outofmemory" events in order to "stats" requests from > memcached servers. > But in application logs we found about 200 messages as above. > > And my questions: > > 1. Why "outofmemory" count and error messages count in our logs are not > the same ? > 2. Why this problem is occured ? > 3. Can we dispose from this problem (any bug-fix already exists maybe...) ? > > Thanks, > > > PS. > I saw memcached source code, and as I understand, this error message is > when occurs PROTOCOL_BINARY_RESPONSE_ENOMEM > > > > > >
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