Our five-node cluster, running 1.4.7, is spewing lots of these messages:
2014-05-30 08:49:20.683 [info]
<0.83.0>@riak_core_sysmon_handler:handle_event:92 monitor long_gc <0.8208.361>
[{initial_call,{erlang,apply,2}},{almost_current_function,{lists,rmerge3_21_3,6}},{message_queue_len,0}]
[{timeout,155},{old_heap_block_size,0},{heap_block_size,317811},{mbuf_size,0},{stack_size,59},{old_heap_size,0},{heap_size,271310}]
2014-05-30 08:52:30.532 [info]
<0.83.0>@riak_core_sysmon_handler:handle_event:92 monitor long_gc <0.17361.375>
[{initial_call,{erlang,apply,2}},{almost_current_function,{lists,rmerge2_1,4}},{message_queue_len,0}]
[{timeout,103},{old_heap_block_size,0},{heap_block_size,514229},{mbuf_size,0},{stack_size,59},{old_heap_size,0},{heap_size,252851}]
2014-05-30 08:52:31.123 [info]
<0.83.0>@riak_core_sysmon_handler:handle_event:92 monitor long_gc <0.17361.375>
[{initial_call,{erlang,apply,2}},{almost_current_function,{lists,rmerge2_2,5}},{message_queue_len,0}]
[{timeout,103},{old_heap_block_size,0},{heap_block_size,514229},{mbuf_size,0},{stack_size,58},{old_heap_size,0},{heap_size,251111}]
2014-05-30 08:52:37.041 [info]
<0.83.0>@riak_core_sysmon_handler:handle_event:92 monitor long_gc <0.29376.375>
[{initial_call,{erlang,apply,2}},{almost_current_function,{lists,split_1_1,6}},{message_queue_len,0}]
[{timeout,103},{old_heap_block_size,0},{heap_block_size,196418},{mbuf_size,0},{stack_size,56},{old_heap_size,0},{heap_size,190521}]
2014-05-30 08:52:37.149 [info]
<0.83.0>@riak_core_sysmon_handler:handle_event:92 monitor long_gc <0.29376.375>
[{initial_call,{erlang,apply,2}},{almost_current_function,{lists,split_1,5}},{message_queue_len,0}]
[{timeout,101},{old_heap_block_size,0},{heap_block_size,317811},{mbuf_size,0},{stack_size,56},{old_heap_size,0},{heap_size,196361}]
2014-05-30 08:52:37.977 [info]
<0.83.0>@riak_core_sysmon_handler:handle_event:92 monitor long_gc <0.29376.375>
[{initial_call,{erlang,apply,2}},{almost_current_function,{lists,rmerge3_21_3,6}},{message_queue_len,0}]
[{timeout,123},{old_heap_block_size,0},{heap_block_size,514229},{mbuf_size,0},{stack_size,59},{old_heap_size,0},{heap_size,251541}]
2014-05-30 09:02:00.731 [info]
<0.83.0>@riak_core_sysmon_handler:handle_event:92 monitor long_gc <0.16282.433>
[{initial_call,{erlang,apply,2}},{almost_current_function,{erlang,max,2}},{message_queue_len,0}]
[{timeout,103},{old_heap_block_size,0},{heap_block_size,196418},{mbuf_size,0},{stack_size,65},{old_heap_size,0},{heap_size,125642}]
GET and PUT times are shooting into multi-second response.
Can someone give me any hints about where to look, please?
--
Dave Brady
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