Hi Hope you clear with my steup? Regards Harsimran
On Fri, Apr 29, 2011 at 4:30 PM, Harsimranjit singh Kler < simran...@gmail.com> wrote: > Hi > My Setup one load balancer(apache ) and three tomcat server . > so 800 requests me i am hitting on apache loadbalancer using SOAP UI > s\w now apache using modjk connector(equal load among all worker > .Rondrobin) and distributing requests to 3 tomcats .So 270 aprx for each > tomcat worker. > > If hitting 1200 on Loadbalancer .this mean 400 aprox processed by each > tomcat worker.(Assuming all 1200 requests not going to one tomcat if no > failover.As per my understanding i have given maxthread as 500 for each > tomcat worker ) > > Yes I removed minProcessors="25" maxProcessors="2000" now. > > i am using SOAP UI s\w to test setup where i can check response and all.For > my web services project(wsdl) some 4 methods exposed & are invoked in > sequence.Average time for these all method to complete i am using to > test.Let me know if some alternate tool to test load and performance , i can > try with that also. > > Let me know if some issue with my configurations ? > > On Fri, Apr 29, 2011 at 3:41 PM, André Warnier <a...@ice-sa.com> wrote: > >> Hi. >> >> I am still not quite sure that I understand the way your are presenting >> your results, below. >> What does a line like >> >> > b) 800 request 1 LB ,3 tomcat==Slow response time(double) >> actually mean ? >> >> Apart from that : >> >> a) >> > minProcessors="25" maxProcessors="2000" >> these attributes are deprecated, see >> http://tomcat.apache.org/tomcat-5.5-doc/config/ajp.html >> Since they are confusing, remove them. >> >> b) >> maxThreads="500" >> >> This means that each Tomcat will actually /never/ process more than 500 >> simultaneous AJP requests. Any additional simultaneous request will have to >> wait, until one thread becomes available to handle it. >> >> One thing that you are not mentioning, is : in your test, how long does it >> take to actually process 1 request, if you send just one ? >> >> c) what pogram are you using, to send the requests to Apache/Tomcat ? >> And how do you see that "the response time is slow/slower" ? >> >> >> >> Harsimranjit singh Kler wrote: >> >>> Hi andre >>> >>> Actully i m testing performance of my setup.I have apache 2.2.17 handling >>> requests and configured 4 tomcats with modjk connector. >>> ServerLimit 30 >>> worker MPM details: >>> StartServers 20 >>> MaxClients 1500 >>> MinSpareThreads 40 >>> MaxSpareThreads 100 >>> ThreadsPerChild 50 >>> MaxRequestsPerChild 0 >>> server.xml for each tomcat >>> -------------------------------------------- >>> >>> >>> <!-- Define an AJP 1.3 Connector on port 8009 --> >>> >>> <Connector port="8009" >>> >>> enableLookups="false" redirectPort="8443" >>> >>> minProcessors="25" maxProcessors="2000" >>> >>> maxThreads="500" minSpareThreads="25" >>> >>> maxSpareThreads="75" protocol="AJP/1.3" /> >>> >>> >>> Now i have tested by hitting some concurent requests on apache load >>> balancer(LB):- >>> >>> a) 400 request 1 LB ,1 tomcat==expected response time >>> b) 400 request 1 LB ,2 tomcat==expected response time >>> c) 400 request 1 LB ,3 tomcat==expected response time >>> >>> but >>> >>> a) 800 request 1 LB, 2 tomcat==Slow response time(double) >>> b) 800 request 1 LB ,3 tomcat==Slow response time(double) >>> a) 1200 request 1 LB, 3 tomcat==Slow response time(three time) >>> >>> why LB slow down with increased concurent requests(CPU & memory >>> utilisation >>> same)? >>> >>> Hope u clear with my problem? >>> >>> >>> >>> On Thu, Apr 28, 2011 at 1:06 AM, André Warnier <a...@ice-sa.com> wrote: >>> >>> It may be me, but your question is not very clear. >>>> Let me try again : >>>> Since you seem to have Apache httpd in front of Tomcat, you can try to >>>> use >>>> the "ab" program which comes with Apache httpd, to send requests to >>>> httpd, >>>> and by selecting appropriate requests, have them forwarded to Tomcat >>>> through >>>> mod_jk. >>>> Then, at the Apache httpd level, the mod_status module would help you >>>> figure out what is going on at the Apache httpd level. >>>> The mod_jk status worker will show you what is going on at the mod_jk >>>> level. >>>> And the Tomcat Manager (server-status part), will show you some >>>> information >>>> about what is going on at the Tomcat level. >>>> There are also tools such as "jconsole" which can show you what is >>>> happening at the level of the JVM which runs Tomcat (each Tomcat, if you >>>> have several). >>>> >>>> References for the above : >>>> Apache "ab" program : http://httpd.apache.org/docs/2.2/programs/ab.html >>>> Apache mod_status : >>>> http://httpd.apache.org/docs/2.2/mod/mod_status.html >>>> mod_jk status worker : >>>> http://tomcat.apache.org/connectors-doc/reference/status.html >>>> Tomcat Manager application : >>>> http://tomcat.apache.org/tomcat-5.5-doc/manager-howto.html >>>> Monitoring the Tomcat JVM : >>>> http://tomcat.apache.org/tomcat-5.5-doc/monitoring.html >>>> >>>> If that does not answer your question, then try to be more clear about >>>> what >>>> exactly you are looking for. For example, what do you mean by "test >>>> load" ? >>>> What precisely are you trying to find out ? >>>> >>>> >>>> >>>> >>>> Harsimranjit singh Kler wrote: >>>> >>>> Hi Andre >>>>> >>>>> i checked but i want simple steps to test load on my each worker as am >>>>> doing >>>>> first time.Thanks >>>>> regards >>>>> Harsimran >>>>> On Wed, Apr 27, 2011 at 8:57 PM, Harsimranjit singh Kler < >>>>> simran...@gmail.com> wrote: >>>>> >>>>> Hi >>>>> >>>>>> >>>>>> I need some observations on loadbalancer with mod jk, such as >>>>>> How to check utilization of each httpd workers? How to check what is >>>>>> the >>>>>> number of connections active on the each separate >>>>>> Tomcats when there is load?.How i can increase response time?AJP port >>>>>> should unique in worker.properities? >>>>>> >>>>>> Whenever i am increasing concurrent requests on LB response time >>>>>> decreases? >>>>>> Using apache 2.2.17+modjk1.2.31+tomcat 5.5.27 >>>>>> >>>>>> >>>>>> regards >>>>>> harsimran >>>>>> >>>>>> >>>>>> --------------------------------------------------------------------- >>>> 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 >> >> >
