| To: | "David S. Miller" <davem@xxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: bad TSO performance in 2.6.9-rc2-BK |
| From: | Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> |
| Date: | Fri, 24 Sep 2004 10:40:38 +1000 |
| Cc: | ak@xxxxxxx, niv@xxxxxxxxxx, andy.grover@xxxxxxxxx, anton@xxxxxxxxx, netdev@xxxxxxxxxxx |
| In-reply-to: | <20040924001225.GA5051@xxxxxxxxxxxxxxxxxxx> |
| References: | <20040923161141.4ea9be4c.davem@xxxxxxxxxxxxx> <E1CAdCy-0001FM-00@xxxxxxxxxxxxxxxxxxxxxxxx> <20040923164149.5368d291.davem@xxxxxxxxxxxxx> <20040924001225.GA5051@xxxxxxxxxxxxxxxxxxx> |
| Sender: | netdev-bounce@xxxxxxxxxxx |
| User-agent: | Mutt/1.5.6+20040722i |
On Fri, Sep 24, 2004 at 10:12:25AM +1000, herbert wrote: > > 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? Probably not. There many things (such as snd_cwnd) in the stack that doesn't work properly when the mss changes drastically like this. -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt |
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