"Michael S. Tsirkin" <mst@xxxxxxxxxx> wrote on 10/26/2010 02:27:09 PM:
> Re: [v3 RFC PATCH 0/4] Implement multiqueue virtio-net
>
> On Mon, Oct 25, 2010 at 09:20:38PM +0530, Krishna Kumar2 wrote:
> > > Krishna Kumar2/India/IBM@IBMIN wrote on 10/20/2010 02:24:52 PM:
> >
> > Any feedback, comments, objections, issues or bugs about the
> > patches? Please let me know if something needs to be done.
> >
> > Some more test results:
> > _____________________________________________________
> > Host->Guest BW (numtxqs=2)
> > # BW% CPU% RCPU% SD% RSD%
> > _____________________________________________________
>
> I think we discussed the need for external to guest testing
> over 10G. For large messages we should not see any change
> but you should be able to get better numbers for small messages
> assuming a MQ NIC card.
I had to make a few changes to qemu (and a minor change in macvtap
driver) to get multiple TXQ support using macvtap working. The NIC
is a ixgbe card.
__________________________________________________________________________
Org vs New (I/O: 512 bytes, #numtxqs=2, #vhosts=3)
# BW1 BW2 (%) SD1 SD2 (%) RSD1 RSD2 (%)
__________________________________________________________________________
1 14367 13142 (-8.5) 56 62 (10.7) 8 8 (0)
2 3652 3855 (5.5) 37 35 (-5.4) 7 6 (-14.2)
4 12529 12059 (-3.7) 65 77 (18.4) 35 35 (0)
8 13912 14668 (5.4) 288 332 (15.2) 175 184 (5.1)
16 13433 14455 (7.6) 1218 1321 (8.4) 920 943 (2.5)
24 12750 13477 (5.7) 2876 2985 (3.7) 2514 2348 (-6.6)
32 11729 12632 (7.6) 5299 5332 (.6) 4934 4497 (-8.8)
40 11061 11923 (7.7) 8482 8364 (-1.3) 8374 7495 (-10.4)
48 10624 11267 (6.0) 12329 12258 (-.5) 12762 11538 (-9.5)
64 10524 10596 (.6) 21689 22859 (5.3) 23626 22403 (-5.1)
80 9856 10284 (4.3) 35769 36313 (1.5) 39932 36419 (-8.7)
96 9691 10075 (3.9) 52357 52259 (-.1) 58676 53463 (-8.8)
128 9351 9794 (4.7) 114707 94275 (-17.8) 114050 97337 (-14.6)
__________________________________________________________________________
Avg: BW: (3.3) SD: (-7.3) RSD: (-11.0)
__________________________________________________________________________
Org vs New (I/O: 1K, #numtxqs=8, #vhosts=5)
# BW1 BW2 (%) SD1 SD2 (%) RSD1 RSD2 (%)
__________________________________________________________________________
1 16509 15985 (-3.1) 45 47 (4.4) 7 7 (0)
2 6963 4499 (-35.3) 17 51 (200.0) 7 7 (0)
4 12932 11080 (-14.3) 49 74 (51.0) 35 35 (0)
8 13878 14095 (1.5) 223 292 (30.9) 175 181 (3.4)
16 13440 13698 (1.9) 980 1131 (15.4) 926 942 (1.7)
24 12680 12927 (1.9) 2387 2463 (3.1) 2526 2342 (-7.2)
32 11714 12261 (4.6) 4506 4486 (-.4) 4941 4463 (-9.6)
40 11059 11651 (5.3) 7244 7081 (-2.2) 8349 7437 (-10.9)
48 10580 11095 (4.8) 10811 10500 (-2.8) 12809 11403 (-10.9)
64 10569 10566 (0) 19194 19270 (.3) 23648 21717 (-8.1)
80 9827 10753 (9.4) 31668 29425 (-7.0) 39991 33824 (-15.4)
96 10043 10150 (1.0) 45352 44227 (-2.4) 57766 51131 (-11.4)
128 9360 9979 (6.6) 92058 79198 (-13.9) 114381 92873 (-18.8)
__________________________________________________________________________
Avg: BW: (-.5) SD: (-7.5) RSD: (-14.7)
Is there anything else you would like me to test/change, or shall
I submit the next version (with the above macvtap changes)?
Thanks,
- KK
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