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Date: Fri, 8 Jun 2007 13:41:55 -0700 (PDT) From: Philip Romanov <philip_romanov@...oo.com> To: netdev@...r.kernel.org Subject: SKY2 vs SK98LIN performance on 88E8053 MAC Hello! We are observing severe IPv4 forwarding degradation when switching from sk98lin to sky2 driver. Setup: plain 2.6.21.3 kernel, 88E8053 Marvell Yukon2 MAC, sk98lin is @revision 8.41.2.3 coming from FC6, SKY2 driver from 2.6.21.3 kernel, both drivers are in NAPI mode. Benchmarks are done using bidirectional traffic generated by IXIA, sending 256-byte packets. Observed packet throughput is almost 30% higher with sklin98 driver. Ethernet flow control is turned off in SKY2 driver (hard-coded as off, we know about this problem). I also have oprofile records of the drivers in case anybody is interested. Please share info if you know anything on SKY2 performance bottlenecks. Thanks in advance, Philip R. ____________________________________________________________________________________ Shape Yahoo! in your own image. Join our Network Research Panel today! http://surveylink.yahoo.com/gmrs/yahoo_panel_invite.asp?a=7 - 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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