2002-09-17 20:45:04

by Duc Vianney

[permalink] [raw]
Subject: Re: [Lse-tech] Hyperthreading performance on 2.4.19 and 2.5.32



>What happened to the -38% degradation you found? That seems to have
>fallen off the results list for some reason ... did you fix it, or is it
still >there?

Martin ... Thanks for pointing it out.
The -38% degradation was seen on Sync Random Disk Writes, Sync
Sequential Disk Writes, and Sync Disk Copies observed from the
AIM9 bencmark running in Single User test mode. The degradation
is still there and I will investigate it later when we have the
hardware resource back.

Thanks ... Duc.



"Martin J. Bligh" <[email protected]>@lists.sourceforge.net on 09/17/2002
03:05:35 PM

Sent by: [email protected]


To: Duc Vianney/Austin/[email protected], [email protected],
[email protected]
cc:
Subject: Re: [Lse-tech] Hyperthreading performance on 2.4.19 and 2.5.32



> Benchmarks. For multithreaded benchmarks: chat, dbench and tbench.
> Summary of results. The results on Linux kernel 2.4.19 show HT might
> improve multithreaded application by as much as 30%. On kernel 2.5.32,
> HT may provide speed-up as high as 60%.

What happened to the -38% degradation you found? That seems to have
fallen off the results list for some reason ... did you fix it, or is it
still there?

M.




-------------------------------------------------------
This SF.NET email is sponsored by: AMD - Your access to the experts
on Hammer Technology! Open Source & Linux Developers, register now
for the AMD Developer Symposium. Code: EX8664
http://www.developwithamd.com/developerlab
_______________________________________________
Lse-tech mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/lse-tech