Article: Nehalem Performance Preview
By: David Kanter (dkanter.delete@this.realworldtech.com), April 12, 2009 11:12 pm
Room: Moderated Discussions
>>>jbb creates threads at the start of each warehouse run, and then lets them terminate at the end of the warehous run. Warehouse runs are ramped up from 1 to 2xCPU count threads, with 30/240s runtime per iteration for warmup/scoring respectively. See the jbb docs on http://www.spec.org
>>>
>>>for more detail.
>>
>>I really tought JBB was creating one thread for each "business operation" (a "client
>>request"?), not a few long running threads, hum... How scores would be affected if that was the case?
>
>That would definitely change the profile. Threads are >expensive to set up and tear
>down, so this is not a common pattern in Java apps.
Henrik,
What is the cost of setting up a Java thread? I'm assuming you measure it in either:
1. Cycles
2. Wallclock time
3. Instructions
What about the cost of destroying a thread? I'm not asking for JRockit specific numbers, but good general ranges.
David
>>>
>>>for more detail.
>>
>>I really tought JBB was creating one thread for each "business operation" (a "client
>>request"?), not a few long running threads, hum... How scores would be affected if that was the case?
>
>That would definitely change the profile. Threads are >expensive to set up and tear
>down, so this is not a common pattern in Java apps.
Henrik,
What is the cost of setting up a Java thread? I'm assuming you measure it in either:
1. Cycles
2. Wallclock time
3. Instructions
What about the cost of destroying a thread? I'm not asking for JRockit specific numbers, but good general ranges.
David
Topic | Posted By | Date |
---|---|---|
Nehalem review up | David Kanter | 2009/04/07 02:43 AM |
Nehalem review up | noone | 2009/04/07 05:48 AM |
Strange jbb on Harpertown | Henrik S | 2009/04/07 07:29 AM |
Strange jbb on Harpertown | David Kanter | 2009/04/07 10:19 AM |
Strange jbb on Harpertown | Henrik S | 2009/04/07 08:33 PM |
Strange jbb on Harpertown | Chris | 2009/04/07 11:54 PM |
Strange jbb on Harpertown | Henrik S | 2009/04/08 01:40 AM |
Nehalem review up | Vincent Diepeveen | 2009/04/07 07:34 AM |
Nehalem review up | Jack | 2009/04/09 03:51 PM |
Nehalem review up | Vincent Diepeveen | 2009/04/10 12:58 AM |
Nehalem review up | Michael S | 2009/04/10 02:45 AM |
Nehalem review up | EduardoS | 2009/04/10 06:01 AM |
Nehalem review up | Michael S | 2009/04/10 06:56 AM |
Nehalem review up | Eugene Nalimov | 2009/04/10 08:12 AM |
Choice of C compiler doesn't matter much for Java... | Henrik S | 2009/04/10 09:10 AM |
Choice of C compiler doesn't matter much for Java... | EduardoS | 2009/04/10 01:49 PM |
Choice of C compiler doesn't matter much for Java... | Henrik S | 2009/04/11 06:13 AM |
Choice of C compiler doesn't matter much for Java... | EduardoS | 2009/04/11 10:30 AM |
Large pages | David Kanter | 2009/04/11 01:02 PM |
Choice of C compiler doesn't matter much for Java... | Henrik S | 2009/04/11 10:06 PM |
Choice of C compiler doesn't matter much for Java... | Paul | 2009/04/12 12:53 AM |
Choice of C compiler doesn't matter much for Java... | iz | 2009/04/12 01:59 AM |
Choice of C compiler doesn't matter much for Java... | Henrik S | 2009/04/12 06:37 AM |
Choice of C compiler doesn't matter much for Java... | EduardoS | 2009/04/12 07:08 AM |
Choice of C compiler doesn't matter much for Java... | Henrik S | 2009/04/12 08:25 AM |
Choice of C compiler doesn't matter much for Java... | EduardoS | 2009/04/12 04:24 PM |
Choice of C compiler doesn't matter much for Java... | Henrik S | 2009/04/12 09:18 PM |
Thread costs | David Kanter | 2009/04/12 11:12 PM |
Thread costs | Henrik S | 2009/04/14 01:08 PM |
Choice of C compiler doesn't matter much for Java... | Michael S | 2009/04/11 07:53 AM |
Choice of C compiler doesn't matter much for Java... | Henrik S | 2009/04/11 10:08 PM |
Nehalem review up | Vincent Diepeveen | 2009/04/11 03:50 PM |
Nehalem review up | Michael S | 2009/04/11 04:12 PM |
Nehalem review up | Vincent Diepeveen | 2009/04/12 02:01 AM |
Nehalem review up | Michael S | 2009/04/12 04:07 AM |
Nehalem review up | rwessel | 2009/04/07 01:01 PM |
Nehalem review up | slacker | 2009/04/08 08:11 AM |
Energy vs. power | David Kanter | 2009/04/08 09:11 AM |
Energy vs. power | Vincent Diepeveen | 2009/04/10 01:08 AM |
Energy vs. power | slacker | 2009/04/10 08:26 AM |
Energy vs. power | RagingDragon | 2009/04/10 09:19 AM |
Energy vs. power | David Kanter | 2009/04/10 10:47 AM |
Energy vs. power | Jack | 2009/04/10 03:44 PM |
Energy vs. power | slacker | 2009/04/10 06:00 PM |
Energy vs. power | Jack | 2009/04/10 06:31 PM |
Energy vs. power | David Kanter | 2009/04/10 11:16 PM |
Nehalem review up | rwessel | 2009/04/08 01:32 PM |
Minor font issue | gpriatko | 2009/04/07 03:35 PM |
Minor HTML issue | David Kanter | 2009/04/07 08:38 PM |
Minor HTML issue | David Kanter | 2009/04/07 08:39 PM |
Good work, i look forward to linux and SP2 numbers (NT) | PiedPiper | 2009/04/08 12:52 AM |
Nehalem review up | Joe Chang | 2009/04/10 02:59 AM |