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Date:	Thu, 5 May 2011 21:06:00 +0530
From:	Krishna Kumar2 <krkumar2@...ibm.com>
To:	Krishna Kumar2 <krkumar2@...ibm.com>
Cc:	davem@...emloft.net, eric.dumazet@...il.com, kvm@...r.kernel.org,
	"Michael S. Tsirkin" <mst@...hat.com>, netdev@...r.kernel.org,
	netdev-owner@...r.kernel.org, rusty@...tcorp.com.au
Subject: Re: [PATCH 0/4] [RFC] virtio-net: Improve small packet performance

Krishna Kumar wrote on 05/05/2011 08:57:13 PM:

Oops, I sent my patch's test results for the 16K case.
The correct one is:

________________________________________________________
                  I/O size: 16K
#       BW1     BW2 (%)         SD1     SD2 (%)
________________________________________________________
1       6684    6670 (-.2)      1.1     .6 (-45.4)
2       7674    7859 (2.4)      5.0     2.6 (-48.0)
4       7358    7421 (.8)       21.3    11.6 (-45.5)
8       7393    7289 (-1.4)     82.7    44.8 (-45.8)
16      7958    7280 (-8.5)     283.2   166.3 (-41.2)
32      7792    7163 (-8.0)     1257.5  692.4 (-44.9)
64      7673    7096 (-7.5)     5723.1  2870.3 (-49.8)
96      7462    6963 (-6.6)     12731.8 6475.6 (-49.1)
128     7338    6919 (-5.7)     21331.7 12345.7 (-42.1)
________________________________________________________
Summary:    BW: (-3.9)      SD: (-45.4)

Sorry for the confusion.

Regards,

- KK

> ________________________________________________________
>                   I/O size: 16K
> #     BW1     BW2 (%)        SD1       SD2 (%)
> ________________________________________________________
> 1     6684    7019 (5.0)     1.1       1.1 (0)
> 2     7674    7196 (-6.2)    5.0       4.8 (-4.0)
> 4     7358    8032 (9.1)     21.3      20.4 (-4.2)
> 8     7393    8015 (8.4)     82.7      82.0 (-.8)
> 16    7958    8366 (5.1)     283.2     310.7 (9.7)
> 32    7792    8113 (4.1)     1257.5    1363.0 (8.3)
> 64    7673    8040 (4.7)     5723.1    5812.4 (1.5)
> 96    7462    7883 (5.6)     12731.8   12119.8 (-4.8)
> 128   7338    7800 (6.2)     21331.7   21094.7 (-1.1)
> ________________________________________________________
> Summary:     BW: (4.6)     SD: (-1.5)

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