when my server has 80, 000 TCP connections, the length of file_server_2's message_queue is grow quickly. When I check the process info ,I find this:
(ejabberd@xxxx)1> erlang:process_info(list_to_pid("<0.24.0>")).
[{registered_name,file_server_2},
{current_function,{prim_file,drv_get_response,1}},
{initial_call,{proc_lib,init_p,5}},
{status,running},
{message_queue_len,37},
{messages,[{'$gen_call',{<0.29936.3282>,
#Ref<0.0.11499.147076>},
{read_file_info,"/home/q/erlang1705/lib/erlang/lib/webtool-0.8.10/ebin/priv/lib/fast_tls_drv.so"}},
{'$gen_call',{<0.11832.3264>,#Ref<0.0.11499.147077>},
{read_file_info,"/home/q/erlang1705/lib/erlang/lib/odbc-2.10.22/ebin/priv/lib/fast_tls_drv.so"}},
{'$gen_call',{<0.21203.3289>,#Ref<0.0.11499.147078>},
{read_file_info,"/home/q/erlang1705/lib/erlang/lib/observer-2.0.4/ebin/priv/lib/fast_tls_drv.so"}},
{'$gen_call',{<0.2585.3265>,#Ref<0.0.11499.147079>},
{read_file_info,"/home/q/erlang1705/lib/erlang/lib/mnesia-4.12.5/ebin/priv/lib/fast_tls_drv.so"}},
{'$gen_call',{<0.28603.3278>,#Ref<0.0.11499.147080>},
{read_file_info,"/home/q/erlang1705/lib/erlang/lib/inets-5.10.6/ebin/priv/lib/fast_tls_drv.so"}},
{'$gen_call',{<0.30249.3174>,#Ref<0.0.11499.147081>},
{read_file_info,"/home/q/erlang1705/lib/erlang/lib/erl_docgen-0.3.7/ebin/priv/lib/fast_tls_drv.so"}},
{'$gen_call',{<0.15376.3271>,#Ref<0.0.11499.147085>},
{read_file_info,"/home/q/erlang1705/lib/erlang/lib/erl_interface-3.7.20/ebin/priv/lib/fast_tls_drv.so"}},
{'$gen_call',{<0.23830.3243>,#Ref<0.0.11499.147086>},
{read_file_info,"/home/q/erlang1705/lib/erlang/lib/xmerl-1.3.7/ebin/priv/lib/fast_tls_drv.so"}},
{'$gen_call',{<0.28361.3231>,#Ref<0.0.11499.147087>},
{read_file_info,"/home/q/erlang1705/lib/erlang/lib/debugger-4.0.3/ebin/priv/lib/fast_tls_drv.so"}},
{'$gen_call',{<0.21951.3224>,#Ref<0.0.11499.147088>},
{read_file_info,"/home/q/erlang1705/lib/erlang/lib/et-1.5/ebin/priv/lib/fast_tls_drv.so"}},
{'$gen_call',{<0.24450.3247>,#Ref<0.0.11499.147090>},
{read_file_info,"/home/q/erlang1705/lib/erlang/lib/crypto-3.5/ebin/priv/lib/fast_tls_drv.so"}},
{'$gen_call',{<0.2854.3273>,#Ref<0.0.11499.147092>},
{read_file_info,"/home/q/erlang1705/lib/erlang/lib/odbc-2.10.22/ebin/priv/lib/fast_tls_drv.so"}},
{'$gen_call',{<0.6034.3189>,#Ref<0.0.11499.147095>},
{read_file_info,"/home/q/erlang1705/lib/erlang/lib/ic-4.3.6/ebin/priv/lib/fast_tls_drv.so"}},
{'$gen_call',{<0.4923.3252>,#Ref<0.0.11499.147096>},
{read_file_info,"/home/q/erlang1705/lib/erlang/lib/compiler-5.0.4/ebin/priv/lib/fast_tls_drv.so"}},
{'$gen_call',{<0.14453.3275>,#Ref<0.0.11499.147100>},
{read_file_info,"/home/q/erlang1705/lib/erlang/lib/megaco-3.17.3/ebin/priv/lib/fast_tls_drv.so"}},
{'$gen_call',{<0.21126.3243>,#Ref<0.0.11499.147111>},
{read_file_info,[...]}},
{'$gen_call',{<0.28121.3229>,#Ref<0.0.11499.147118>},
{read_file_info,...}},
{'$gen_call',{<0.26819.3263>,...},{...}},
{'$gen_call',{...},...},
{'$gen_call',...},
{...}|...]},
{links,[#Port<0.112>,<0.11.0>]},
{dictionary,[{'$ancestors',[kernel_sup,<0.10.0>]},
{'$initial_call',{file_server,init,1}}]},
{trap_exit,true},
{error_handler,error_handler},
{priority,normal},
{group_leader,<0.9.0>},
{total_heap_size,225340},
{heap_size,28690},
{stack_size,30},
{reductions,249704733833},
{garbage_collection,[{min_bin_vheap_size,46422},
{min_heap_size,233},
{fullsweep_after,65535},
{minor_gcs,45393}]},
{suspending,[]}]
I can't understand why so many gen_call to get the file info of fast_tls_drv.so
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