Number of Parallel GC Threads

Jon Masamitsu Jon.Masamitsu at Sun.COM
Fri Jan 23 18:03:30 UTC 2009

Jon Masamitsu wrote On 01/23/09 07:37,:

>In the latest jdk 6 updates the default number of threads
>is less than the number of CPU's.   For  a T5240 (128 hardware
>threads) I think it will be about 40 GC threads.
>Of course that is still too many for the small applications.

So this 40 for 128 hardware threads is not the 5/8's rule as Tony
described.   Niagaras with > 32 hardware threads use a more
conservative 5/16's rule. 

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