Warning "Can not start proc_lib:init_p"

Ingo Rockel ingo.rockel at bluelionmobile.com
Wed Apr 3 03:09:25 EDT 2013


Hi,

we have some performance issues with our riak cluster, from time to time 
we have a sudden drop in performance (already asked the list about this, 
no-one had an idea though). Although not the same time but on the 
problematic nodes we have a lot of these messages from time to time:

2013-04-02 21:41:11.173 [warning] <0.25646.475> ** Can not start 
proc_lib:init_p
,[<0.14556.474>,[<0.9519.474>,riak_api_pb_sup,riak_api_sup,<0.1291.0>],riak_kv_p
ut_fsm,start_link,[{raw,65032165,<0.9519.474>},{r_object,<<109>>,<<77,115,124,49
,53,55,57,56,57,56,50,124,49,51,54,52,57,51,49,54,49,49,53,49,50,52,53,54>>,[{r_
content,{dict,0,16,16,8,80,48,{[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[]},
{{[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[]}}},<<>>}],[],{dict,2,16,16,8,8
0,48,{[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[]},{{[],[],[],[],[],[],[],[]
,[],[],[[<<99,111,110,116,101,110,116,45,116,121,112,101>>,97,112,112,108,105,99
,97,116,105,111,110,47,106,115,111,110]],[],[],[],[],[[<<99,104,97,114,115,101,1
16>>,85,84,70,45,56]]}}},<<123,34,115,116,34,58,50,44,34,116,34,58,49,44,34,99,3
4,58,34,66,117,116,32,115,104,101,32,105,115,32,103,111,110,101,44,32,110,32,101
,118,101,110,32,116,104,111,117,103,104,32,105,109,32,110,111,116,32,105,110,32,
117,114,32,99,105,116,121,32,105,32,108,111,118,101,32,117,32,110,100,32,105,32,
109,101,97,110,32,105,116,32,58,39,40,34,44,34,114,34,58,49,52,51,52,54,52,51,57
,44,34,115,34,58,49,53,55,57,56,57,56,50,44,34,99,116,34,58,49,51,54,52,57,51,49
,54,49,49,53,49,50,44,34,97,110,34,58,102,97,108,115,101,44,34,115,107,34,58,49,
51,54,52,57,51,49,54,49,49,53,49,50,52,53,54,44,34,115,117,34,58,48,125>>},[{tim
eout,60000}]]] on 'riak at 172.22.3.12' **

Can anyone explain to me what these messages mean and if I need to do 
something about it? Could these messages be in any way related to the 
performance issues?

Ingo




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