RE: How can I find number of 'open files'
There is a profiler available for the jdk which spits out a nice overview of all the instances of classes that are used.. Maby that can help you check the correctnes of the code and see the bottlenecks (it also says how much memory it uses..).. Just saw a report on that one day, so you have to check java.sun.com for more details.. Mvgr, martin -Original Message- From: Ivan Markovic [mailto:[EMAIL PROTECTED]] Sent: Friday, August 17, 2001 5:39 AM To: [EMAIL PROTECTED] Subject: How can I find number of 'open files' Importance: High I had a problem a while back with 'too many open files'. So I checked and fix some bugs in my code and increased the limit (Solaris running on Sun Netra T1). But now the problem is back. I suspect it is a problem with my code. How can I find out how many files are 'open'? If I can track that number then I can hit my code through Tomcat and see roughly when the files are not being closed. Is there some Unix function that will allow me to monitor open files? Below is the kind of error that I see thank you. java.net.SocketException: Too many open files at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:421) at java.net.ServerSocket.implAccept(ServerSocket.java:243) at java.net.ServerSocket.accept(ServerSocket.java:222) at org.apache.tomcat.service.PoolTcpEndpoint.acceptSocket(PoolTcpEndp oint.java:277) at org.apache.tomcat.service.TcpWorkerThread.run(PoolTcpEndpoint.java:344) at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:411) at java.lang.Thread.run(Thread.java:484) Endpoint ServerSocket[addr=0.0.0.0/0.0.0.0,port=0,localport=8007] shutdown due to exception: java.net.SocketException: Too many open files -- Ivan Markovic SculptLight http://www.sculptlight.com (+353) 87 2939256 (+353) 1 2982205 114 Lower Churchtown Rd, Dublin 14, Ireland.
Re: How can I find number of 'open files'
Ivan Markovic at [EMAIL PROTECTED] wrote: I had a problem a while back with 'too many open files'. So I checked and fix some bugs in my code and increased the limit (Solaris running on Sun Netra T1). But now the problem is back. I suspect it is a problem with my code. How can I find out how many files are 'open'? If I can track that number then I can hit my code through Tomcat and see roughly when the files are not being closed. Is there some Unix function that will allow me to monitor open files? Just a curiosity... What Tomcat version are you using? Pier
How can I find number of 'open files'
I had a problem a while back with 'too many open files'. So I checked and fix some bugs in my code and increased the limit (Solaris running on Sun Netra T1). But now the problem is back. I suspect it is a problem with my code. How can I find out how many files are 'open'? If I can track that number then I can hit my code through Tomcat and see roughly when the files are not being closed. Is there some Unix function that will allow me to monitor open files? Below is the kind of error that I see thank you. java.net.SocketException: Too many open files at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:421) at java.net.ServerSocket.implAccept(ServerSocket.java:243) at java.net.ServerSocket.accept(ServerSocket.java:222) at org.apache.tomcat.service.PoolTcpEndpoint.acceptSocket(PoolTcpEndpoint.java:277) at org.apache.tomcat.service.TcpWorkerThread.run(PoolTcpEndpoint.java:344) at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:411) at java.lang.Thread.run(Thread.java:484) Endpoint ServerSocket[addr=0.0.0.0/0.0.0.0,port=0,localport=8007] shutdown due to exception: java.net.SocketException: Too many open files -- Ivan Markovic SculptLight http://www.sculptlight.com (+353) 87 2939256 (+353) 1 2982205 114 Lower Churchtown Rd, Dublin 14, Ireland.
RE: How can I find number of 'open files'
I assume you are closing the sockets that you create/open? :~) Ricky Y. Artigas Analyst/Programmer / Database Administrator Information Technology Division Easycall Communications Phils., Inc. --- IMPORTANT NOTICE: This message (and any attachment hereto) may contain privileged and/or confidential information specific to EasyCall. If you are not the intended addressee indicated in this message, you may not copy or disseminate this message (or any attachment hereto) to anyone. Instead, please destroy this message (and any attachment hereto), and kindly notify the sender by reply email. Any information in this message (and any attachment thereto) that do not relate to the official business of EasyCall shall be understood as neither given nor endorsed by the company. -Original Message- From: Ivan Markovic [SMTP:[EMAIL PROTECTED]] Sent: Friday, August 17, 2001 11:39 AM To: [EMAIL PROTECTED] Subject: How can I find number of 'open files' Importance: High I had a problem a while back with 'too many open files'. So I checked and fix some bugs in my code and increased the limit (Solaris running on Sun Netra T1). But now the problem is back. I suspect it is a problem with my code. How can I find out how many files are 'open'? If I can track that number then I can hit my code through Tomcat and see roughly when the files are not being closed. Is there some Unix function that will allow me to monitor open files? Below is the kind of error that I see thank you. java.net.SocketException: Too many open files at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:421) at java.net.ServerSocket.implAccept(ServerSocket.java:243) at java.net.ServerSocket.accept(ServerSocket.java:222) at org.apache.tomcat.service.PoolTcpEndpoint.acceptSocket(PoolTcpEndpoint.jav a:277) at org.apache.tomcat.service.TcpWorkerThread.run(PoolTcpEndpoint.java:344) at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:411) at java.lang.Thread.run(Thread.java:484) Endpoint ServerSocket[addr=0.0.0.0/0.0.0.0,port=0,localport=8007] shutdown due to exception: java.net.SocketException: Too many open files -- Ivan Markovic SculptLight http://www.sculptlight.com (+353) 87 2939256 (+353) 1 2982205 114 Lower Churchtown Rd, Dublin 14, Ireland.
Re: How can I find number of 'open files'
Ivan, How can I find out how many files are 'open'? If I can track that number then I can hit my code through Tomcat and see roughly when the files are not being closed. Is there some Unix function that will allow me to monitor open files? You can try /usr/proc/bin/pfiles with the pid of tomcat. It'll report fstat and fcntl information for all open files in the process. Regards, begin:vcard n:Bouteille;Cyril tel;home:(510) 727-1707 x-mozilla-html:FALSE adr:;;22702 Peak St;Hayward;CA;94541;USA version:2.1 email;internet:[EMAIL PROTECTED] title:Software Architect fn:Cyril Bouteille end:vcard S/MIME Cryptographic Signature
Re: How can I find number of 'open files'
Ivan, How can I find out how many files are 'open'? If I can track that number then I can hit my code through Tomcat and see roughly when the files are not being closed. Is there some Unix function that will allow me to monitor open files? You can try /usr/proc/bin/pfiles with the pid of tomcat. It'll report fstat and fcntl information for all open files in the process. Regards,
Re: How can I find number of 'open files'
I had a problem a while back with 'too many open files'. So I checked and fix some bugs in my code and increased the limit (Solaris running on Sun Netra T1). But now the problem is back. I suspect it is a problem with my code. How can I find out how many files are 'open'? If I can track that number then I can hit my code through Tomcat and see roughly when the files are not being closed. Is there some Unix function that will allow me to monitor open files? lsof - the most famous utlity for inspecting: processes (like ps), open files and network connections (like netstat). Nix. P.S. kako je u Dablinu?
