should have kept this on list ---------- Forwarded message ---------- From: Chris Leech <[EMAIL PROTECTED]> Date: Mar 16, 2006 11:13 AM Subject: Re: I/OAT performance data To: Rick Jones <[EMAIL PROTECTED]>
> I must be missing something - if the MTU was 1500 bytes, how did the > receiver's offloaded copies get to the 2k level? Were several arriving > TCP segments aggregated? Most of the overhead (get_user_pages) is per recv, not on a per packet basis. Regardless of packet size, we offload the copies if the total requested data amount is 2k or greater. So while there's no aggregation of TCP segments before the socket level, we are talking about copying multiple packets per I/O. - Chris - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
