Re: Slowdown in Jython
tac-tics wrote: I have an application written in jython which has to process a number of records. It runs fine until it gets to about 666 records (and maybe that's a sign), and then, it's performance and responsiveness goes down the toilet. It looks like it's running out of memory and is being forced to use extended memory, but I do not know enough about the language to figure out where this is happening. It will eventually finish the task, but the window stops responding, and it ends up taking several hours (as opposed to several minutes as it should). I really just wish I had a tool for polling the amount of memory Jython was using at any given moment. Does anyone have any strategy or advice for me? You can find out how much memory Jython is using the same as you would for any other application, e.g. Windows Task Manager or the equivalent. Jython is a Java application and you can increase the max heap available the same as for other java apps, using the command line switch -Xmx, e.g. -Xmx512m to set the max heap to 512 megabytes. Kent -- http://mail.python.org/mailman/listinfo/python-list
Re: Slowdown in Jython
Jython is a Java application That was the intellectual leap I needed to solve the problem. I forgot that I have total access to Java memory management. It turns out at the point of slowdown, Java was continually running full GC, causing the awful loss of performance. I figured out that I was not releasing a very large chunk of memory right before the script, so I effectively had a duplicate of every record in memory. I'm still not sure why my memory usage is increasing during the script, but with the removal of the duplicates in memory, it runs just fine now. Problem solved for now. -- http://mail.python.org/mailman/listinfo/python-list
Slowdown in Jython
I have an application written in jython which has to process a number of records. It runs fine until it gets to about 666 records (and maybe that's a sign), and then, it's performance and responsiveness goes down the toilet. It looks like it's running out of memory and is being forced to use extended memory, but I do not know enough about the language to figure out where this is happening. It will eventually finish the task, but the window stops responding, and it ends up taking several hours (as opposed to several minutes as it should). I really just wish I had a tool for polling the amount of memory Jython was using at any given moment. Does anyone have any strategy or advice for me? -- http://mail.python.org/mailman/listinfo/python-list
Re: Slowdown in Jython
At Thursday 28/12/2006 13:14, tac-tics wrote: I have an application written in jython which has to process a number of records. It runs fine until it gets to about 666 records (and maybe that's a sign), and then, it's performance and responsiveness goes down the toilet. It looks like it's running out of memory and is being forced to use extended memory, but I do not know enough about the Only a standard advise: try not to load all the records together, instead, if possible, process them one record at a time. This way you're not bound by available memory. -- Gabriel Genellina Softlab SRL __ Preguntá. Respondé. Descubrí. Todo lo que querías saber, y lo que ni imaginabas, está en Yahoo! Respuestas (Beta). ¡Probalo ya! http://www.yahoo.com.ar/respuestas -- http://mail.python.org/mailman/listinfo/python-list
