[erlang-questions] Unexpected behavior of HTTPC module - tls_connection process take more memory

Sanath Prasanna <>
Mon Sep 7 05:52:34 CEST 2015


Hi all,

I am running HTTP client using httpc Module to send both http and https
requests. normally sending arround 300 request per second without any
issue. however sometimes erlang node become very slow responsive. at that
time server load average is very high and using etop can identify
"tls_connection" process take more memory. when restart the erlang node its
become normal. as per my investigation normal time memory, processors,
loadAverage is not increasing. following is the HTTP request config



httpc:request(Method, Request, [{timeout, TimeoutTime}], [{sync, false}])



below is the etop output at that time



        procs    1134                        processes 1504844
code         9309

        runq        0                        atom          420
ets         29692



Pid            Name or Initial Func    Time    Reds  Memory    MsgQ Current
Function

----------------------------------------------------------------------------------------

<5490.26428.14>tls_connection:init/     '-'    733224580768       0
gen_fsm:loop/7

<5490.26429.14>tls_connection:init/     '-'   1328524580768       0
gen_fsm:loop/7

<5490.26430.14>tls_connection:init/     '-'    528924580768       0
gen_fsm:loop/7

<5490.26431.14>tls_connection:init/     '-'   1432224580768       0
gen_fsm:loop/7

<5490.26432.14>tls_connection:init/     '-'       024580768       0
gen_fsm:loop/7

<5490.26433.14>tls_connection:init/     '-'       024580768       0
gen_fsm:loop/7

<5490.26434.14>tls_connection:init/     '-'       024580768       0
gen_fsm:loop/7

<5490.26435.14>tls_connection:init/     '-'       024580768       0
gen_fsm:loop/7

<5490.26436.14>tls_connection:init/     '-'       024580768       0
gen_fsm:loop/7


can some one help me to solve this issue?

Br,

A.H.E. Robert
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