Regarding TSTextLogObjectWrite

[Manas Agarwal <ma...@gmail.com>]

Hi All,

I am trying to use TSTextLogObjectWrite to write logs.
Earlier the plugin was writing to traffic.out. But since traffic.out
doesn't create any versions of itself, I decided to create
a seperate log file for each plugin.
I then flush the output after writing each log using TSTextLogObjectFlush.

However I am facing the issue when the test the following scenario-

I created a script with 5 threads. I send two same requests back to back.
The first one will be hit the origin server
while the second one will be replied back from cache.

However after running from few hours, the system crashes in log write. It
is not clear from the stack trace what is the problem.

Here is the log trace-
/usr/local/bin/traffic_server(_ZN9LogBuffer14checkout_writeEPmm+0x123)[0x5961c3]
/usr/local/bin/traffic_server(_ZN9LogObject15_checkout_writeEPmm+0x94)[0x5af8a4]
/usr/local/bin/traffic_server(_ZN9LogObject3logEP9LogAccessPc+0x2b0)[0x5b1190]
/usr/local/bin/traffic_server(_ZN13TextLogObject8va_writeEPKcP13__va_list_tag+0x8a)[0x5b15aa]
/usr/local/bin/traffic_server(TSTextLogObjectWrite+0xa2)[0x49d7e2]
/home/plugins/cnsapp.so(_ZN9CNSLogger11writeAppLogEiPKcz+0x194)[0x2aaaaebcc894]
/home/plugins/cnsapp.so(_ZN6CNSApp7requestEPP7ContextRSsP13tsapi_httptxnP10tsapi_cont+0x41)[0x2aaaaebc8bd1]
/home/plugins/cnsapp.so[0x2aaaaebd4e98]
/usr/local/bin/traffic_server(_ZN6HttpSM17state_api_calloutEiPv+0x171)[0x52e131]
/usr/local/bin/traffic_server(_ZN6HttpSM14set_next_stateEv+0xb02)[0x53a9f2]
/usr/local/bin/traffic_server(_ZN9LogBuffer14checkout_writeEPmm+0x123)[0x5961c3]
/usr/local/bin/traffic_server(_ZN9LogObject15_checkout_writeEPmm+0x94)[0x5af8a4]
/usr/local/bin/traffic_server(_ZN9LogObject3logEP9LogAccessPc+0x2b0)[0x5b1190]
/usr/local/bin/traffic_server(_ZN13TextLogObject8va_writeEPKcP13__va_list_tag+0x8a)[0x5b15aa]
/usr/local/bin/traffic_server(TSTextLogObjectWrite+0xa2)[0x49d7e2]
/home/plugins/cnsapp.so(_ZN9CNSLogger11writeAppLogEiPKcz+0x194)[0x2aaaaebcc894]
/home/plugins/cnsapp.so(_Z14null_transformP10tsapi_cont7TSEventPv+0x8f)[0x2aaaaebc304f]
/usr/local/bin/traffic_server(_ZN7EThread13process_eventEP5Eventi+0x22f)[0x6b9b5f]
/usr/local/bin/traffic_server(_ZN7EThread7executeEv+0x1aa)[0x6ba05a]
/usr/local/bin/traffic_server[0x6b8fae]
/lib64/libpthread.so.0[0x3912e0673d]
Any idea why this is happening after 3-4 hrs of pluggin running.
Regards,
Manas

Re: Regarding TSTextLogObjectWrite

[Igor Galić <i....@brainsware.org>]

ugh.. and I always thought `make check` is supposed to catch this kind of thing :S 

Manas, 

I don't see a bug report from you - is this still an issue? If not, could you reply to this thread and explain how you cleared it all up? 

Thanks, 

-- i 

----- Original Message -----

> Hi All,
> I am trying to use TSTextLogObjectWrite to write logs.
> Earlier the plugin was writing to traffic.out. But since traffic.out
> doesn't create any versions of itself, I decided to create
> a seperate log file for each plugin.
> I then flush the output after writing each log using
> TSTextLogObjectFlush.
> However I am facing the issue when the test the following scenario-
> I created a script with 5 threads. I send two same requests back to
> back. The first one will be hit the origin server
> while the second one will be replied back from cache.
> However after running from few hours, the system crashes in log
> write. It is not clear from the stack trace what is the problem.
> Here is the log trace-
> /usr/local/bin/traffic_server(_ZN9LogBuffer14checkout_writeEPmm+0x123)[0x5961c3]
> /usr/local/bin/traffic_server(_ZN9LogObject15_checkout_writeEPmm+0x94)[0x5af8a4]
> /usr/local/bin/traffic_server(_ZN9LogObject3logEP9LogAccessPc+0x2b0)[0x5b1190]
> /usr/local/bin/traffic_server(_ZN13TextLogObject8va_writeEPKcP13__va_list_tag+0x8a)[0x5b15aa]
> /usr/local/bin/traffic_server(TSTextLogObjectWrite+0xa2)[0x49d7e2]
> /home/plugins/cnsapp.so(_ZN9CNSLogger11writeAppLogEiPKcz+0x194)[0x2aaaaebcc894]
> /home/plugins/cnsapp.so(_ZN6CNSApp7requestEPP7ContextRSsP13tsapi_httptxnP10tsapi_cont+0x41)[0x2aaaaebc8bd1]
> /home/plugins/cnsapp.so[0x2aaaaebd4e98]
> /usr/local/bin/traffic_server(_ZN6HttpSM17state_api_calloutEiPv+0x171)[0x52e131]
> /usr/local/bin/traffic_server(_ZN6HttpSM14set_next_stateEv+0xb02)[0x53a9f2]
> /usr/local/bin/traffic_server(_ZN9LogBuffer14checkout_writeEPmm+0x123)[0x5961c3]
> /usr/local/bin/traffic_server(_ZN9LogObject15_checkout_writeEPmm+0x94)[0x5af8a4]
> /usr/local/bin/traffic_server(_ZN9LogObject3logEP9LogAccessPc+0x2b0)[0x5b1190]
> /usr/local/bin/traffic_server(_ZN13TextLogObject8va_writeEPKcP13__va_list_tag+0x8a)[0x5b15aa]
> /usr/local/bin/traffic_server(TSTextLogObjectWrite+0xa2)[0x49d7e2]
> /home/plugins/cnsapp.so(_ZN9CNSLogger11writeAppLogEiPKcz+0x194)[0x2aaaaebcc894]
> /home/plugins/cnsapp.so(_Z14null_transformP10tsapi_cont7TSEventPv+0x8f)[0x2aaaaebc304f]
> /usr/local/bin/traffic_server(_ZN7EThread13process_eventEP5Eventi+0x22f)[0x6b9b5f]
> /usr/local/bin/traffic_server(_ZN7EThread7executeEv+0x1aa)[0x6ba05a]
> /usr/local/bin/traffic_server[0x6b8fae]
> /lib64/libpthread.so.0[0x3912e0673d]
> Any idea why this is happening after 3-4 hrs of pluggin running.
> Regards,
> Manas

-- 
Igor Galić 

Tel: +43 (0) 664 886 22 883 
Mail: i.galic@brainsware.org 
URL: http://brainsware.org/ 
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