Re: PSI-PROBE query
Hi Vicky, Am 09.12.2012 19:56, schrieb vicky: Yes Chris, i am pretty sure that nobody is accessing the application. The moment i start my Tomcat the Request Count reaches values of 400+ within few seconds, this value is getting incremented by 6 everytime (eg: 6,12,18,24,30) which port do you use to connect to psi-probe itself? We often use the http-connector, which would be 8080 in your case. Regards Felix Whereas my AJP Connector Request Count is showing the correct numbers depending on the requests which all are redirected from APache. As of now i have not configured the AccessLogValve , but will try out this option definitely Please suggest Thanks Vicky From: Christopher Schultz ch...@christopherschultz.net To: Tomcat Users List users@tomcat.apache.org Sent: Sunday, 9 December 2012 10:29 PM Subject: Re: PSI-PROBE query -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Vicky, On 12/9/12 7:05 AM, vicky wrote: I am trying to gather statistical information about the number of requests served by my tomcat (forwarded from Apache MPM worker) for this i am using /PSI-PRobe (http://code.google.com/p/psi-probe/) application. I have enclosed the PROBE screenshot as well for your reference, Sorry, this list strips attachments. Please copy/paste the numbers into a followup post. in this Request Time , Processing Time values for http-8080 connector are keep on increasing even when no one is accessing the application. Are you sure nobody is accessing the application? Do you have an AccessLogValve (or Filter) enabled? I am wondering how can i get the report of number of requests which all are served by my tomcat instance, i am not able to relate to the numbers which all are getting displayed in the Probe Application. Does i am doing something wrong in interpreting the Probe Application output If you want to know which requests are taking a long time, configure (or re-configure) an AccessLogValve to include the total time for the request. Then sort your log file by response-time and start at the longest response to see what's going on. Psi Probe likely uses JMX (or maybe gets the data directly from Tomcat in the same way that the JMX beans get their data), so all that same data is available the JMX. Attach to Tomcat using jconsole, jvisualvm, etc. and poke around: there's a lot of good information in there. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with undefined - http://www.enigmail.net/ iEYEAREIAAYFAlDEw2kACgkQ9CaO5/Lv0PCrswCgh1e7HpCS7uLtr9jiq9Qg+q1Y 7EQAn2+z7X/0mEBdzL5nZazdJh/D4SAh =1U+/ -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: PSI-PROBE query
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Vicky, On 12/9/12 1:56 PM, vicky wrote: Yes Chris, i am pretty sure that nobody is accessing the application. The moment i start my Tomcat the Request Count reaches values of 400+ within few seconds, this value is getting incremented by 6 everytime (eg: 6,12,18,24,30) Whereas my AJP Connector Request Count is showing the correct numbers depending on the requests which all are redirected from APache. Let me guess: you are accessing PsiProbe via HTTP from your web browser. Every request you make to get a page probably has some other dependencies (images, stylesheets, etc.). Try enabling your request-logger on the client (Firefox and Chrome have these built-into the browser) and look at the traffic. I'll bet you are being scared of your own shadow. As of now i have not configured the AccessLogValve , but will try out this option definitely You must configure this in order to figure out what is happening. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with undefined - http://www.enigmail.net/ iEYEAREIAAYFAlDF9SYACgkQ9CaO5/Lv0PCVFQCcCeLt9llY0/X2mrbdfWnq86PU BHYAn09OOgS99sgTQ6YBvllQfrTsQ7g+ =/Q41 -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: PSI-PROBE query
Chris, You was right as usual :) A lot of to fro requests are happening from my browser to the Probe application which looks like the Ajax calls because of that the request count value for my http-8080 connector is keep on increasing even when nobody is accessing it.This all i came to know after installing TAMPER-DATA which is a firefox extension (for request logging).Thanks for making me aware about this I am accessing the PSI-PROBE application over HTTP port eg:- http://localhost:8080/probe/connectors.htm Now my question is that how we can monitor the request counts which all coming to my HTTP connector specifically for my application. ??? Is there a way by which i can configure two HTTP connector's one for PROBE application one for my own application.??? or do you have any better solution . Please suggest Thanks Vivek From: Christopher Schultz ch...@christopherschultz.net To: Tomcat Users List users@tomcat.apache.org Sent: Monday, 10 December 2012 8:13 PM Subject: Re: PSI-PROBE query -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Vicky, On 12/9/12 1:56 PM, vicky wrote: Yes Chris, i am pretty sure that nobody is accessing the application. The moment i start my Tomcat the Request Count reaches values of 400+ within few seconds, this value is getting incremented by 6 everytime (eg: 6,12,18,24,30) Whereas my AJP Connector Request Count is showing the correct numbers depending on the requests which all are redirected from APache. Let me guess: you are accessing PsiProbe via HTTP from your web browser. Every request you make to get a page probably has some other dependencies (images, stylesheets, etc.). Try enabling your request-logger on the client (Firefox and Chrome have these built-into the browser) and look at the traffic. I'll bet you are being scared of your own shadow. As of now i have not configured the AccessLogValve , but will try out this option definitely You must configure this in order to figure out what is happening. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org/ Comment: Using GnuPG with undefined - http://www.enigmail.net/ iEYEAREIAAYFAlDF9SYACgkQ9CaO5/Lv0PCVFQCcCeLt9llY0/X2mrbdfWnq86PU BHYAn09OOgS99sgTQ6YBvllQfrTsQ7g+ =/Q41 -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: PSI-PROBE query
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Vicky, On 12/10/12 12:24 PM, vicky wrote: A lot of to fro requests are happening from my browser to the Probe application which looks like the Ajax calls because of that the request count value for my http-8080 connector is keep on increasing even when nobody is accessing it.This all i came to know after installing TAMPER-DATA which is a firefox extension (for request logging).Thanks for making me aware about this FWIW, Firefox can do request logging without any additional extensions. Just go to Tools | Web Developer | Web Console. By default, it will lot all network activity like GET http://www.apache.org/; and show you the response code. You can also configure it to get all the headers, etc for you if you double-click on any log entry. I am accessing the PSI-PROBE application over HTTP port eg:- http://localhost:8080/probe/connectors.htm Now my question is that how we can monitor the request counts which all coming to my HTTP connector specifically for my application. ??? You can't really do that. Instead, you could install a secondary connector on a different port (perhaps accessible only from localhost, or at least with a firewall rule that requires a certain source subnet) which is used exclusively for serving Psi-Probe requests. Then you only run your metrics on the primary connector and ignore the secondary connector. Is there a way by which i can configure two HTTP connector's one for PROBE application one for my own application.??? See above. If you want to make the webapps /inaccessible/ from the other connector (so you can *only* access PsiProbe from one connector and *only* access your webapp from the other), you'll need to define two separate services, each with one Connector, one Engine, one Host, and then only deploy one application to each Host. I don't think it's worth it, though: you can use policy + firewall to separate things such that you can't get to the secondary port, and you can add a valve/filter that only allows access to PsiProbe from that same source (IP, subnet, etc.). - -chris -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with undefined - http://www.enigmail.net/ iEYEAREIAAYFAlDGYIEACgkQ9CaO5/Lv0PD7KgCbBzrKm3lon2v1ufQTHHEKB/HW r0gAoI/K+VPRWSppJ/17k2RJ3srNXPd5 =gqq0 -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: PSI-PROBE query
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Vicky, On 12/9/12 7:05 AM, vicky wrote: I am trying to gather statistical information about the number of requests served by my tomcat (forwarded from Apache MPM worker) for this i am using /PSI-PRobe (http://code.google.com/p/psi-probe/) application. I have enclosed the PROBE screenshot as well for your reference, Sorry, this list strips attachments. Please copy/paste the numbers into a followup post. in this Request Time , Processing Time values for http-8080 connector are keep on increasing even when no one is accessing the application. Are you sure nobody is accessing the application? Do you have an AccessLogValve (or Filter) enabled? I am wondering how can i get the report of number of requests which all are served by my tomcat instance, i am not able to relate to the numbers which all are getting displayed in the Probe Application. Does i am doing something wrong in interpreting the Probe Application output If you want to know which requests are taking a long time, configure (or re-configure) an AccessLogValve to include the total time for the request. Then sort your log file by response-time and start at the longest response to see what's going on. Psi Probe likely uses JMX (or maybe gets the data directly from Tomcat in the same way that the JMX beans get their data), so all that same data is available the JMX. Attach to Tomcat using jconsole, jvisualvm, etc. and poke around: there's a lot of good information in there. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with undefined - http://www.enigmail.net/ iEYEAREIAAYFAlDEw2kACgkQ9CaO5/Lv0PCrswCgh1e7HpCS7uLtr9jiq9Qg+q1Y 7EQAn2+z7X/0mEBdzL5nZazdJh/D4SAh =1U+/ -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: PSI-PROBE query
Yes Chris, i am pretty sure that nobody is accessing the application. The moment i start my Tomcat the Request Count reaches values of 400+ within few seconds, this value is getting incremented by 6 everytime (eg: 6,12,18,24,30) Whereas my AJP Connector Request Count is showing the correct numbers depending on the requests which all are redirected from APache. As of now i have not configured the AccessLogValve , but will try out this option definitely Please suggest Thanks Vicky From: Christopher Schultz ch...@christopherschultz.net To: Tomcat Users List users@tomcat.apache.org Sent: Sunday, 9 December 2012 10:29 PM Subject: Re: PSI-PROBE query -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Vicky, On 12/9/12 7:05 AM, vicky wrote: I am trying to gather statistical information about the number of requests served by my tomcat (forwarded from Apache MPM worker) for this i am using /PSI-PRobe (http://code.google.com/p/psi-probe/) application. I have enclosed the PROBE screenshot as well for your reference, Sorry, this list strips attachments. Please copy/paste the numbers into a followup post. in this Request Time , Processing Time values for http-8080 connector are keep on increasing even when no one is accessing the application. Are you sure nobody is accessing the application? Do you have an AccessLogValve (or Filter) enabled? I am wondering how can i get the report of number of requests which all are served by my tomcat instance, i am not able to relate to the numbers which all are getting displayed in the Probe Application. Does i am doing something wrong in interpreting the Probe Application output If you want to know which requests are taking a long time, configure (or re-configure) an AccessLogValve to include the total time for the request. Then sort your log file by response-time and start at the longest response to see what's going on. Psi Probe likely uses JMX (or maybe gets the data directly from Tomcat in the same way that the JMX beans get their data), so all that same data is available the JMX. Attach to Tomcat using jconsole, jvisualvm, etc. and poke around: there's a lot of good information in there. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with undefined - http://www.enigmail.net/ iEYEAREIAAYFAlDEw2kACgkQ9CaO5/Lv0PCrswCgh1e7HpCS7uLtr9jiq9Qg+q1Y 7EQAn2+z7X/0mEBdzL5nZazdJh/D4SAh =1U+/ -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
