Memory leak when doing a lot of iterations FBSVCMGR with action_trace_start,
_list and _stop
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Key: CORE-3969
URL: http://tracker.firebirdsql.org/browse/CORE-3969
Project: Firebird Core
Issue Type: Bug
Components: SVCMGR
Reporter: Pavel Zotov
Attachments: pslist_m.zip
I run infinite loop with the following actions:
1) FBSVCMGR action_trace_start
2) connect to .fdb via ISQL and make a simplest query, e.g.: select
current_connection from rdb$database; quit;
3) FBSVCMGR action_trace_list (obtain the ID of active trace sesssion)
4) FBSVCMGR action_trace_stop
Under such circumstances memory leak of process fb_inet_server (tested on SC)
occurs.
The following batch file illustrate the problem (some 3rd part utilities need
for this test: mtee.exe for duplicating output and psList by SysInternals to
output memory consumprion by processes):
@echo off
cls
@rem file = 'trc_toggle.bat'
@rem restart FB for each trace session number will be always 1
@rem net stop "Firebird Server - fb25_3050"
@rem net start "Firebird Server - fb25_3050"
pslist -m | findstr /i /c:"name" | mtee /t pslist_m.log
pslist -m | findstr /i /c:"fb_inet_server" | mtee /t /+ pslist_m.log
set inp=.\tmp_sql.tmp
set out=.\tmp_log.tmp
set i=1
:beg
if exist %inp% del %inp%
if exist %out% del %out%
echo select current_connection,current_timestamp from rdb$database;>>%inp%
@rem echo out nul; select * from rdb$fields,rdb$fields; out;>>%inp%
echo quit;>>%inp%
@echo off
@echo -----------------------
@echo Start of iter # %i%.
@echo on
start /min %FIREBIRD%\bin\fbsvcmgr localhost:service_mgr action_trace_start
trc_cfg zaudit.conf 1>tmp_trace_start.tmp 2>&1
@echo off
ping -n 2 127.0.0.1 >nul
%FIREBIRD%\bin\isql localhost:test_alias -n -i %inp% -o %out% -m
ping -n 3 127.0.0.1 >nul
%FIREBIRD%\bin\fbsvcmgr localhost:service_mgr action_trace_list | findstr /i
/c:"Session ID" 1>tmp_trace_list.tmp 2>&1
@rem get content of file with trace id:
set /p trc_id=<tmp_trace_list.tmp
@rem extract digits:
set trc_id=%trc_id:~12,5%
@echo on
%FIREBIRD%\bin\fbsvcmgr localhost:service_mgr action_trace_stop trc_id
%trc_id% 1>tmp_trace_stop.tmp 2>&1
@rem check that no trace sessions still alive:
%FIREBIRD%\bin\fbsvcmgr localhost:service_mgr action_trace_list
@echo off
@echo End of iter # %i%.
pslist -m | findstr /i /c:"fb_inet_server" | mtee /t /+ pslist_m.log
ping -n 2 127.0.0.1 >nul
set /a i=i+1
goto beg
The cumulative log of this batch (results of psList -m) is in attach.
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