Warning "Can not start proc_lib:init_p"

Ingo Rockel ingo.rockel at bluelionmobile.com
Wed Apr 3 11:03:52 EDT 2013


Hi Evan,

I set swt very_low and zdbbl to 64MB, setting this params helped 
reducing the busy_dist_port and Monitor got {suppressed,... Messages a 
lot. But when the performance of the cluster suddenly drops we still see 
these messages.

The cluster was updated to 1.3 in the meantime.

The eleveldb section:

  %% eLevelDB Config
  {eleveldb, [
              {data_root, "/var/lib/riak/leveldb"},
              {cache_size, 33554432},
              {write_buffer_size_min, 67108864}, %% 64 MB in bytes
              {write_buffer_size_max, 134217728}, %% 128 MB in bytes
              {max_open_files, 4000}
             ]},

the ring size is 1024 and the machines have 48GB of memory. Concerning 
the params from vm.args:

-env ERL_MAX_PORTS 4096
-env ERL_MAX_ETS_TABLES 8192

+P isn't set

Ingo

Am 03.04.2013 16:53, schrieb Evan Vigil-McClanahan:
> For your prior mail, I thought that someone had answered.  Our initial
> suggestion was to add +swt very_low to your vm.args, as well as
> setting the +zdbbl setting that Jon recommended in the list post you
> pointed to.  If those help, moving to 1.3 should help more.
>
> Other limits in vm.args that can cause problems are +P, ERL_MAX_PORTS,
> and  ERL_MAX_ETS_TABLES.  Are any of these set?  If so, to what?
>
> Can you also pate the eleveldb section of your app.config?
>
> On Wed, Apr 3, 2013 at 7:41 AM, Ingo Rockel
> <ingo.rockel at bluelionmobile.com> wrote:
>> Hi Evan,
>>
>> I'm not sure, I find a lot of these:
>>
>> 2013-03-30 23:27:52.992 [error]
>> <0.8036.323>@riak_api_pb_server:handle_info:141 Unrecognized message
>> {22243034,{error,timeout}}
>>
>> and some of these at the same time one of the kind below gets logged
>> (although the one has a different time stamp):
>>
>> 2013-03-30 23:27:53.056 [error] <0.9457.323>@riak_kv_console:status:178
>> Status failed error:terminated
>>
>> Ingo
>>
>> Am 03.04.2013 16:24, schrieb Evan Vigil-McClanahan:
>>
>>> Resending to the list:
>>>
>>> Ingo,
>>>
>>> That is an indication that the protocol buffers server can't spawn a
>>> put fsm, which means that a put cannot be done for some reason or
>>> another.  Are there any other messages that appear around this time
>>> that might indicate why?
>>>
>>> On Wed, Apr 3, 2013 at 12:09 AM, Ingo Rockel
>>> <ingo.rockel at bluelionmobile.com> wrote:
>>>>
>>>> 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
>>>>
>>>> _______________________________________________
>>>> riak-users mailing list
>>>> riak-users at lists.basho.com
>>>> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
>>
>>
>>
>> --
>> Software Architect
>>
>> Blue Lion mobile GmbH
>> Tel. +49 (0) 221 788 797 14
>> Fax. +49 (0) 221 788 797 19
>> Mob. +49 (0) 176 24 87 30 89
>>
>> ingo.rockel at bluelionmobile.com
>>>>> qeep: Hefferwolf
>>
>> www.bluelionmobile.com
>> www.qeep.net


-- 
Software Architect

Blue Lion mobile GmbH
Tel. +49 (0) 221 788 797 14
Fax. +49 (0) 221 788 797 19
Mob. +49 (0) 176 24 87 30 89

ingo.rockel at bluelionmobile.com
 >>> qeep: Hefferwolf

www.bluelionmobile.com
www.qeep.net




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