Messages in this thread | | | Date | Tue, 17 Apr 2001 21:24:43 +0300 | From | Pekka Pietikainen <> | Subject | Re: Possible problem with zero-copy TCP and sendfile() |
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On Tue, Apr 17, 2001 at 06:15:24PM +0200, Jan Kasprzak wrote: > Some more progress: I now downgraded to proftpd without sendfile(). > The CPU usage is now nearly 100% (with ~170 FTP users; with sendfile() > it was under 50% with >320 FTP users). But nevertheless, the downloaded > images now seem to be OK. > > Should I try the stock 2.4.3 without zero-copy patches? It might also be useful to try 2.4.3+zc with the dev->features |= NETIF_F_SG; in the 3c59x driver taken out (so it won't use zero-copy)
Since it starts from the beginning instead of corrupting random packets I doubt it's a hardware problem, though.
-- Pekka Pietikainen
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