[SCore-users-jp] RE: [SCore-users] Communication Performance with Score, with and without network trunking

[Shinji Sumimoto]

Dear Viet.

Very qurious situation. 

Are you using PCI-Express version of E1000 NICs?

Could you measure the performance on one NIC not trunking?
or measure the performance using several parameters of maxnsend and backoff?
(ex maxnsend 24, backoff 2400)

PS: Are you using Hyper threading?

From: "Viet" <viet ＠ sowa.is.uec.ac.jp>
Subject: [SCore-users-jp] RE: [SCore-users] Communication Performance with Score, with and without network trunking
Date: Fri, 14 Jul 2006 14:32:24 +0900
Message-ID: <000001c6a706$e2cbb080$ca4315ac ＠ spc0608>

viet> Dear Shinji Sumimoto Sensei,
viet> 
viet> I remove NAPI from the kernel, but I still could not achieve good
viet> communication performance:
viet> 
viet> (withou NAPI)
viet> + ping:		8		0.000954131
viet> + burst		8		106064
viet> 		1400		1.79729 e+7
viet> 
viet> Viet
viet> 
viet> >-----Original Message-----
viet> >From: Shinji Sumimoto [mailto:s-sumi ＠ flab.fujitsu.co.jp] 
viet> >Sent: Thursday, July 13, 2006 8:18 PM
viet> >To: viet ＠ sowa.is.uec.ac.jp
viet> >Cc: score-users ＠ pccluster.org; s-sumi ＠ flab.fujitsu.co.jp
viet> >Subject: Re: [SCore-users] Communication Performance with 
viet> >Score, with and without network trunking
viet> >
viet> >
viet> >Dear Viet.
viet> >
viet> >I see..
viet> >
viet> >Are you using NAPI option when you are building device driver? 
viet> >Could you show the results of the following command?
viet> >
viet> >% dmesg |grep -i intel
viet> >
viet> >If you are using NAPI, could you re-build the e1000 driver 
viet> >without NAPI option using "make menuconfig" command?
viet> >
viet> >Shinji.
viet> >
viet> 
viet> 
viet> _______________________________________________
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viet> SCore-users ＠ pccluster.org
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------
Shinji Sumimoto, Fujitsu Labs
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