Hi,
-->Here is what I see with Linux. I am running on a freshly installed RedHat
-->6.1 machine. With either JDK, running in native threads is absolutely
-->crippling. There seems to be a serparate JDK process ID for each running
-->thread, or otherwise something is casuing it to fork 15 times. Of these
That is ok. This is the result of thread implementation on Linux.
-->threads four or five of them just hammer the CPU, leaving the whole
-->machine at a crawl. Actual performance of our Java GUI isn't too bad, but
-->it's no where near where it should be.
-->
-->Switch to green threads. With Sun's JDK it's like lightning. Processor
-->utilization is practically nill, and the GUI is extremely responsive. With
-->Blackdown's JDK, processor utilization is also very low, but GUI
-->responsiveness is very low as well.
I use the same system (RH6.1) with Blackdown JDK1.2 RC3 and have the same
observations. Both native and green versions are very slowly, especially
with GUI stuff, when compared to jdk1.1.8 (v1).
Processor utilization is not so bad, until I move a window and a window
in background has to repaint itself. Repainting takes a time of ca. a few
seconds. During that time the processor is busy almost to 100%.
-->Anyone else experienced this behavior? Really odd. Any fixes, work
-->arounds [...]
I am interested to.
Thanks,
Marek.
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