Hi, 2009/5/22 Jose R R <jose.r.r@xxxxxxxxxxx> > On Thu, May 21, 2009 at 11:55 PM, ESGLinux <esggrupos@xxxxxxxxx> wrote: > > > > Hello, > > > > I have marked this question as Semi OFF Topic because I think its not Red > > Hat specific issue but a related product. > > > > I use tomcat on a Red Hat Enterprise Linux AS release 4 (Nahant Update > 4). > > What happens to me is that suddenly the process of tomcat gets 100% CPU > and > > stays at that level of usage for ever. I suspect there is a problem with > my > > application (I´m not asking about this, that´s my problem :-( ) > > > Have you tried an different JVM / JDK? Are these latter 64- or 32-bit > ? Is your application / server designed to run in 32- or 64-bit arch? > Have your tried running your application in an different server > (hardware)? What about trying the application within an different > GNU/Linux distribution environment? I have a 32bits architecture and I´m running tomcat 5.5.26 I have the same distribution on a Suse Enterprise Linux 9 and sometimes I got the same situation > > > Hardware and software heterogeneous environments provide insight that > you would not obtain from an homogeneous one. Hence, if possible > explore running your application/tomcat server in an alternate > environment. Moreover... > > Java Performance analysis tools available for Red Hat's JBoss > application server may come handy --especially since tomcat is only a > component of JBoss. Since you mentioned (elsewhere) you have a paid > Red Hat subscription, you may have access to some or all of those. this sound interesting, which exactly tools do you mean? > > > > > > What I want to know is, how can I see, for example, the thread of tomcat > is > > consumming the cpu (I have tried the thead options of ps) and if is there > > any way to inspect what is doing a thread. > > > Additionally, the IBM AlphaWorks / DeveloperWorks area offers early > access (development releases) to sophisticated Java Performance > analysis tools (among other cool stuff) that you may find of great > value in your efforts to diagnose your Java application/server. See > for instance < http://www.alphaworks.ibm.com/tech/jca >. Yes, you > will also find debuggers and heap analyzers to correct your Java > application ;-) I´m trying jprofiler from http://www.ej-technologies.com (but it´s not free... so, If I have another tool from jboss...) > > > As a matter of fact you may even find helpful application diagnose > tools and utilities (at little, no cost, or trials) from any Java > software development entity like Sun MicroSystems and, of course, its > rabid Java user parent company. > [...] > > Good luck! Thanks I need it, ESG > > > -- > Jose R R > http://www.metztli-it.com > > --------------------------------------------------------------------------------------------- > IBM Lotus Symphony supported on GNU/Linux, Mac OS, and Windows. > > --------------------------------------------------------------------------------------------- > Daylight Saving Time in USA & Canada starts: Sunday 08 March 2009 > > --------------------------------------------------------------------------------------------- > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subjecthttps://www.redhat.com/mailman/listinfo/redhat-list
