<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Timo:<div class=""><br class=""></div><div class="">The general layout of the information is pretty similar to Top (and described on the etop docs <a href="http://www.erlang.org/doc/man/etop.html" class="">http://www.erlang.org/doc/man/etop.html</a> and <a href="http://www.erlang.org/doc/apps/observer/etop_ug.html" class="">http://www.erlang.org/doc/apps/observer/etop_ug.html</a>) - the one downside is that it doesn't profile which function is using the most CPU (the "Reds" column is Reductions, which is Erlang's measure of work being done by a process). If you run it for a while longer, with a shorter -interval setting, you may be able to "catch" what function is being run most frequently other than the gen_server:loop and gen_event:loop functions you're seeing, as they are generic OTP functions and not very useful for diagnostics.</div><div class=""><br class=""></div><div class="">Doug</div><div class=""><br class=""></div><div class=""><div><blockquote type="cite" class=""><div class="">On May 22, 2015, at 9:58 AM, Timo Gatsonides <<a href="mailto:tpjg@me.com" class="">tpjg@me.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class=""><blockquote type="cite" class=""><div class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Try running `riak-admin top` on the node to see what's going on:<div class=""><br class=""></div><div class=""><a href="http://docs.basho.com/riak/1.4.12/ops/running/tools/riak-admin/#top" class="">http://docs.basho.com/riak/1.4.12/ops/running/tools/riak-admin/#top</a></div><div class=""><br class=""></div><div class="">This may give you some insight into what that node is doing.</div></div></div></blockquote><div class=""><br class=""></div>Thanks for the quick response. I had already done that, however I don’t understand the output … </div><div class=""><br class=""></div><div class="">It is below.</div><div class=""><br class=""></div><div class="">-Timo</div><div class=""><br class=""><div class=""><br class=""></div><div style="margin: 0px; font-family: Consolas;" class="">===============================================================================================================================</div><div style="margin: 0px; font-family: Consolas;" class=""> ''                                                 13:56:31</div><div style="margin: 0px; font-family: Consolas;" class=""> Load:  cpu         0               Memory:  total       69336    binary       2717</div><div style="margin: 0px; font-family: Consolas;" class="">        procs     664                        processes    8439    code        10720</div><div style="margin: 0px; font-family: Consolas;" class="">        runq        0                        atom          501    ets          6227</div><div style="margin: 0px; font-family: Consolas; min-height: 14px;" class=""><br class=""></div><div style="margin: 0px; font-family: Consolas;" class="">Pid                 Name or Initial Func         Time       Reds     Memory       MsgQ Current Function</div><div style="margin: 0px; font-family: Consolas;" class="">-------------------------------------------------------------------------------------------------------------------------------</div><div style="margin: 0px; font-family: Consolas;" class=""><6206.105.0>        erlang:apply/2                '-'    5091705       2600          0 cpu_sup:measurement_server_loop/1       </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.181.0>        riak_core_vnode_manager       '-'    3064188     231536          0 gen_server:loop/6                       </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.580.0>        proc_lib:init_p/5             '-'    2805797      34472          0 gen_fsm:loop/7                          </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.715.0>        proc_lib:init_p/5             '-'    2485959      55144          0 gen_fsm:loop/7                          </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.709.0>        proc_lib:init_p/5             '-'    2445894      13896          3 eleveldb:get/3                          </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.94.0>         riak_sysmon_filter            '-'    2394053      13656          0 gen_server:loop/6                       </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.714.0>        proc_lib:init_p/5             '-'    2177064      34472          0 gen_fsm:loop/7                          </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.710.0>        proc_lib:init_p/5             '-'    2153568      34472          0 gen_fsm:loop/7                          </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.3.0>          erl_prim_loader               '-'    2053533     142464          0 erl_prim_loader:loop/3                  </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.707.0>        proc_lib:init_p/5             '-'    2032382      34472          0 gen_fsm:loop/7                          </div><div style="margin: 0px; font-family: Consolas; min-height: 14px;" class=""><br class=""></div><div style="margin: 0px; font-family: Consolas;" class="">===============================================================================================================================</div><div style="margin: 0px; font-family: Consolas;" class=""> ''                                                 13:56:36</div><div style="margin: 0px; font-family: Consolas;" class=""> Load:  cpu         7               Memory:  total       70450    binary       2994</div><div style="margin: 0px; font-family: Consolas;" class="">        procs     665                        processes    9133    code        10720</div><div style="margin: 0px; font-family: Consolas;" class="">        runq        3                        atom          501    ets          6247</div><div style="margin: 0px; font-family: Consolas; min-height: 14px;" class=""><br class=""></div><div style="margin: 0px; font-family: Consolas;" class="">Pid                 Name or Initial Func         Time       Reds     Memory       MsgQ Current Function</div><div style="margin: 0px; font-family: Consolas;" class="">-------------------------------------------------------------------------------------------------------------------------------</div><div style="margin: 0px; font-family: Consolas;" class=""><6206.105.0>        erlang:apply/2                '-'       8092       2600          0 cpu_sup:measurement_server_loop/1       </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.580.0>        proc_lib:init_p/5             '-'       6710      34472          0 eleveldb:write/3                        </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.94.0>         riak_sysmon_filter            '-'       6447      13656          0 gen_server:loop/6                       </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.709.0>        proc_lib:init_p/5             '-'       6174      34472          0 gen_fsm:loop/7                          </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.28437.0>      erlang:apply/2                '-'       3623      21440          0 erlang:receive_emd/3                    </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.707.0>        proc_lib:init_p/5             '-'       3089      21696          0 gen_fsm:loop/7                          </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.711.0>        proc_lib:init_p/5             '-'       3075      34472          0 gen_fsm:loop/7                          </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.374.0>        riak_kv_stat_sj_2             '-'       2679       3856          0 gen_server:loop/6                       </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.714.0>        proc_lib:init_p/5             '-'       1955      21696          0 gen_fsm:loop/7                          </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.7.0>          application_controller        '-'       1779      55880          0 gen_server:loop/6                       </div><div style="margin: 0px; font-family: Consolas; min-height: 14px;" class=""><br class=""></div><div style="margin: 0px; font-family: Consolas;" class="">===============================================================================================================================</div><div style="margin: 0px; font-family: Consolas;" class=""> ''                                                 13:56:40</div><div style="margin: 0px; font-family: Consolas;" class=""> Load:  cpu         8               Memory:  total       69471    binary       2827</div><div style="margin: 0px; font-family: Consolas;" class="">        procs     664                        processes    8469    code        10720</div><div style="margin: 0px; font-family: Consolas;" class="">        runq        0                        atom          501    ets          6251</div><div style="margin: 0px; font-family: Consolas; min-height: 14px;" class=""><br class=""></div><div style="margin: 0px; font-family: Consolas;" class="">Pid                 Name or Initial Func         Time       Reds     Memory       MsgQ Current Function</div><div style="margin: 0px; font-family: Consolas;" class="">-------------------------------------------------------------------------------------------------------------------------------</div><div style="margin: 0px; font-family: Consolas;" class=""><6206.105.0>        erlang:apply/2                '-'      10113       2600          0 cpu_sup:measurement_server_loop/1       </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.181.0>        riak_core_vnode_manager       '-'       9724     231536          0 gen_server:loop/6                       </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.182.0>        riak_core_capability          '-'       5827      54960          0 gen_server:loop/6                       </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.715.0>        proc_lib:init_p/5             '-'       5814      34472          0 gen_fsm:loop/7                          </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.712.0>        proc_lib:init_p/5             '-'       5153      21696          0 gen_fsm:loop/7                          </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.94.0>         riak_sysmon_filter            '-'       4465      13656          0 gen_server:loop/6                       </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.580.0>        proc_lib:init_p/5             '-'       3619      34472          0 gen_fsm:loop/7                          </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.376.0>        riak_kv_stat_sj_4             '-'       2542       3856          0 gen_server:loop/6                       </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.707.0>        proc_lib:init_p/5             '-'       2298      34472          0 gen_fsm:loop/7                          </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.7.0>          application_controller        '-'       2148      55880          0 gen_server:loop/6                       </div><div style="margin: 0px; font-family: Consolas; min-height: 14px;" class=""><br class=""></div><div style="margin: 0px; font-family: Consolas;" class="">===============================================================================================================================</div><div style="margin: 0px; font-family: Consolas;" class=""> ''                                                 13:56:45</div><div style="margin: 0px; font-family: Consolas;" class=""> Load:  cpu         9               Memory:  total       69332    binary       2786</div><div style="margin: 0px; font-family: Consolas;" class="">        procs     665                        processes    8324    code        10720</div><div style="margin: 0px; font-family: Consolas;" class="">        runq        0                        atom          501    ets          6269</div><div style="margin: 0px; font-family: Consolas; min-height: 14px;" class=""><br class=""></div><div style="margin: 0px; font-family: Consolas;" class="">Pid                 Name or Initial Func         Time       Reds     Memory       MsgQ Current Function</div><div style="margin: 0px; font-family: Consolas;" class="">-------------------------------------------------------------------------------------------------------------------------------</div><div style="margin: 0px; font-family: Consolas;" class=""><6206.105.0>        erlang:apply/2                '-'       8092       2600          0 cpu_sup:measurement_server_loop/1       </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.712.0>        proc_lib:init_p/5             '-'       5472      34472          0 gen_fsm:loop/7                          </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.94.0>         riak_sysmon_filter            '-'       4674      13656          0 gen_server:loop/6                       </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.580.0>        proc_lib:init_p/5             '-'       3939      55144          0 gen_fsm:loop/7                          </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.161.0>        riak_core_ring_manager        '-'       3591     230096          0 gen_server:loop/6                       </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.709.0>        proc_lib:init_p/5             '-'       2890      34472          0 gen_fsm:loop/7                          </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.376.0>        riak_kv_stat_sj_4             '-'       2880       5720          0 gen_server:loop/6                       </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.710.0>        proc_lib:init_p/5             '-'       2476      34472          0 gen_fsm:loop/7                          </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.708.0>        proc_lib:init_p/5             '-'       2033      21696          0 gen_fsm:loop/7                          </div><div style="margin: 0px; font-family: Consolas;" class=""><6206.639.0>        proc_lib:init_p/5             '-'       1997      34472          0 gen_fsm:loop/7   </div><div style="margin: 0px; font-family: Consolas;" class=""><br class=""></div></div></div></div></blockquote></div><br class=""></div></body></html>