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Date: Tue, 06 Mar 2007 22:28:02 +0100 From: Zacco <zacco@...hu> To: Andi Kleen <andi@...stfloor.org>, baruch@...en.org CC: netdev@...r.kernel.org Subject: Re: many sockets, slow sendto Hi, Thx a lot you for the advice, I'll have a try. And sorry for the stupid webmail, I will not use it again. Zacco Andi Kleen wrote: > Zaccomer Lajos <zacco@...hu> writes: > > >> I'm playing around with a simulation, in which many thousands of IP >> >> addresses (on interface aliases) are used to send/receive TCP/UDP >> > > Something seems to be wrong with your emailer. It adds a empty > line between each real line. > > >> packets. I noticed that the time of send/sendto increased linearly >> >> with the number of file descriptors, and I found it rather strange. >> > > Yes that is strange. I would suggest you use oprofile to identify which > parts of the kernel use the CPU time with many descriptors. > > -Andi > > - 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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