We actually running Java Applications with JDBC connectios to the databases, we have in this moment 13 application more or less, and one of the this application is on our website, we've received connections from any sites of the internet, and we are interesting to get tunnig in ours Tomcats.
Christopher Schultz wrote:
Fabian,
If i have only two java proccess of 141 MB and 55 MB why my memory is over 90% of the utilization and the application working slowly or not working, when the users try to get access using the webserver in this server. i can't understand this problem...thnaks
You have to understand something about Linux memory: it never gives it up. So, even though 'top' reports that your box has very little free physical memory, that doesn't mean that it's all being used.
When the kernel obtains memory on behalf of a process, it doesn't go back into 'free' when the process fees it or dies. I know it's a little weird.
However, you do have a reasonable complaint: the app seems sluggish, and with that hardware, it shouldn't be.
Again: what are you running? If your code fires off 500 threads every time a request comes in, then maybe you shoudl rethink your architecture. If it's nothing heavy-hitting, then something else is wrong. What else is running on the box?
What benchmarks have you run? Or, are you just complaining about wall-clock time? Could your problem be network latency? How far from the box are you?
-chris
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