[rabbitmq-discuss] rabbit_mgmt_db crashed

Wed Oct 31 00:09:39 GMT 2012

Hello,

I just noticed a crash report in sasl log of one of our RMQ server.

It seems the management plug-in crashed. The management web page cannot
be opened any more.

I had this problem before with an old version. Now I am using 2.8.6
64-bit version on Windows 2008 Server.

The RMQ server is still running fine, but the memory utilization is much
higher than other similar servers without such crash.

This "bad" server uses about 8 GB memory now, while other normal servers
use only about 500 MB memory.

It may eventually hit the high memory water mark soon at 9.6 GB.

Here is the complete crash report.

=CRASH REPORT==== 29-Oct-2012::23:01:08 ===

  crasher:

    initial call: rabbit_mgmt_db:init/1

    pid: <0.284.0>

    registered_name: []

    exception exit: {badarith,

                        [{rabbit_mgmt_db,rate,5,[]},

                         {rabbit_mgmt_db,'-rates/5-lc$^0/1-0-',5,[]},

                         {rabbit_mgmt_db,'-rates/5-lc$^1/1-1-',6,[]},

                         {rabbit_mgmt_db,rates,5,[]},

                         {rabbit_mgmt_db,handle_fine_stat,7,[]},

{rabbit_mgmt_db,'-handle_fine_stats/4-lc$^1/1-1-',4,

                             []},

{rabbit_mgmt_db,'-handle_event/2-lc$^1/1-0-',4,[]},

                         {rabbit_mgmt_db,handle_event,2,[]}]}

      in function  gen_server:terminate/6 (gen_server.erl, line 747)

    ancestors: [<0.281.0>,rabbit_mgmt_sup,<0.262.0>]

    messages: [{'$gen_cast',

                      {event,

                          {event,channel_stats,

                              [{pid,<0.12756.396>},

                               {transactional,false},

                               {confirm,false},

                               {consumer_count,0},

                               {messages_unacknowledged,0},

                               {messages_unconfirmed,0},

                               {messages_uncommitted,0},

                               {acks_uncommitted,0},

                               {prefetch_count,1},

                               {client_flow_blocked,false},

                               {channel_queue_stats,[]},

                               {channel_exchange_stats,[]},

                               {channel_queue_exchange_stats,[]}],

                              {1351,576868,812003}}}}]

    links: [<0.281.0>]

    dictionary: []

    trap_exit: false

    status: running

    heap_size: 6765

    stack_size: 24

    reductions: 3730467164

  neighbours:

Here is the output of "rabbitmqctl.bat status"

Status of node rabbit at RACK4UNIT001 ...

[{pid,4708},

{running_applications,

     [{rabbitmq_management,"RabbitMQ Management Console","2.8.6"},

      {rabbitmq_management_agent,"RabbitMQ Management Agent","2.8.6"},

      {amqp_client,"RabbitMQ AMQP Client","2.8.6"},

      {rabbit,"RabbitMQ","2.8.6"},

      {os_mon,"CPO  CXC 138 46","2.2.10"},

      {sasl,"SASL  CXC 138 11","2.2.1"},

      {rabbitmq_mochiweb,"RabbitMQ Mochiweb Embedding","2.8.6"},

      {webmachine,"webmachine","1.9.1-rmq2.8.6-git52e62bc"},

      {mochiweb,"MochiMedia Web Server","2.3.1-rmq2.8.6-gitd541e9a"},

      {xmerl,"XML parser","1.3.2"},

      {inets,"INETS  CXC 138 49","5.9.1"},

      {mnesia,"MNESIA  CXC 138 12","4.7.1"},

      {stdlib,"ERTS  CXC 138 10","1.18.2"},

      {kernel,"ERTS  CXC 138 10","2.15.2"}]},

{os,{win32,nt}},

{erlang_version,

     "Erlang R15B02 (erts-5.9.2) [64-bit] [smp:12:12]
[async-threads:30]\n"},

{memory,

     [{total,8512001360},

      {processes,7401925315},

      {processes_used,7401754972},

      {system,1110076045},

      {atom,662409},

      {atom_used,652416},

      {binary,857726336},

      {code,17969722},

      {ets,4550280}]},

{vm_memory_high_watermark,0.4},

{vm_memory_limit,10304190873},

{disk_free_limit,1000000000},

{disk_free,39365828608},

{file_descriptors,

     [{total_limit,16284},

      {total_used,142},

      {sockets_limit,14653},

      {sockets_used,113}]},

{processes,[{limit,1048576},{used,5986}]},

{run_queue,0},

{uptime,104350}]

...done.

Best regards,

--Bin Chen

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