[concurrency-interest] Thread priority

Stanimir Simeonoff stanimir at riflexo.com
Thu Feb 7 02:21:40 EST 2013


Thread priorities are usually NOT applied at all.
For insance:
     intx DefaultThreadPriority                     = -1
{product}
    intx JavaPriority10_To_OSPriority              = -1
{product}
     intx JavaPriority1_To_OSPriority               = -1
{product}
     intx JavaPriority2_To_OSPriority               = -1
{product}
     intx JavaPriority3_To_OSPriority               = -1
{product}
     intx JavaPriority4_To_OSPriority               = -1
{product}
     intx JavaPriority5_To_OSPriority               = -1
{product}
     intx JavaPriority6_To_OSPriority               = -1
{product}
     intx JavaPriority7_To_OSPriority               = -1
{product}
     intx JavaPriority8_To_OSPriority               = -1
{product}
     intx JavaPriority9_To_OSPriority               = -1
{product}

in other words unless specified : -XXJavaPriority10_To_OSPriority=
it won't be mapped.

If applied the JVM compiler/GC threads may become starved which you don't
want, so they have to work above normal prir (that request root
privileges). Alternatively the normal java threads have to run w/ lower
prir which means other process will have higher priority - also unpleasant.

Stanimir

On Thu, Feb 7, 2013 at 5:20 AM, Mohan Radhakrishnan <
radhakrishnan.mohan at gmail.com> wrote:

> Hi,
>           Can the Thread priority setting in the API still be reliably
> used uniformly across processors ? There are other concurrency patterns in
> the API but this setting is still there.
>
>
> Thanks,
> Mohan
>
> _______________________________________________
> Concurrency-interest mailing list
> Concurrency-interest at cs.oswego.edu
> http://cs.oswego.edu/mailman/listinfo/concurrency-interest
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://cs.oswego.edu/pipermail/concurrency-interest/attachments/20130207/6a6b48bd/attachment.html>


More information about the Concurrency-interest mailing list