Re: bad TSO performance in 2.6.9-rc2-BK
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: 2004-09-24 00:12:25
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: 2004-09-24 00:12:25
On Thu, Sep 23, 2004 at 04:41:49PM -0700, David S. Miller wrote:
Previously we counted TSO frames as single "packets" as long as we could fit one more frame into the congestion window we'd spit out the whole TSO frame, and this kept the pipe full.
I see. In that case what we've got now can't possibly work. How about this? We always to treat TSO frames as one packet. We continue to obey the congestion window by starting with a TSO MSS that is small enough. We increase the TSO MSS as the congestion window goes up. That should work, no? Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} [off-list ref] Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt