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Date: Thu, 30 Apr 2009 15:14:05 -0400 From: Andrew Gallatin <gallatin@...i.com> To: Eric Dumazet <dada1@...mosbay.com> CC: Herbert Xu <herbert@...dor.apana.org.au>, David Miller <davem@...emloft.net>, brice@...i.com, sgruszka@...hat.com, netdev@...r.kernel.org Subject: Re: [PATCH] myr10ge: again fix lro_gen_skb() alignment Eric Dumazet wrote: > > > I wonder if you could try to enlarge 'struct page' by 8 bytes and redo a test... > > Here is a patch to combine two ideas. But it wont allow GRO to go much faster I guess :( The patch seems to help both GRO and LRO a little with timestamps disabled, but seems to hurt a little with them. I don't pretend to understand why: LRO: 87380 65536 65536 60.00 8279.36 8.10 77.55 0.160 1.535 LRO + patch: 87380 65536 65536 60.01 7897.51 7.45 74.92 0.155 1.554 LRO + timestamp disable: 87380 65536 65536 60.02 7753.55 8.01 74.06 0.169 1.565 LRO + patch + timestamp disable: 87380 65536 65536 60.01 7915.63 7.74 74.57 0.160 1.544 GRO: 87380 65536 65536 60.00 8053.19 7.86 85.47 0.160 1.739 GRO + patch 87380 65536 65536 60.00 7910.02 7.69 85.86 0.159 1.778 GRO + timestamp disable: 87380 65536 65536 60.02 7535.12 7.27 84.57 0.158 1.839 GRO + timestamp disable + patch 87380 65536 65536 60.02 7735.26 7.92 83.68 0.168 1.772 Drew -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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