Date: Sat, 5 Apr 2003 14:43:04 -0500 (EST) From: Andrew Gallatin <gallatin@cs.duke.edu> To: Fred Clift <fclift@verio.net> Cc: alpha@freebsd.org Subject: Re: call for testers: busdma-ified fxp(4) driver Message-ID: <16015.12744.366625.974350@grasshopper.cs.duke.edu> In-Reply-To: <20030402090802.Y82002-400000@vespa.dmz.orem.verio.net> References: <20030401134113.GC1750@elvis.mu.org> <20030402090802.Y82002-400000@vespa.dmz.orem.verio.net>
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Fred Clift writes: > > before: throughput in 10^6 bits/sec 39.18 > after: throughput in 10^6 bits/sec 94.11 > (dc): throughput in 10^6 bits/sec 70.97 > > > Honestly I'm suprised there is so much difference between the before and > after and I'm doubting my testing methodology -- perhaps I had the duplex My guess is that the old kernel has WITNESS enabled and the new kernel does not. Even a 600MHz 21264 is maxed out at 75Mb/sec with WITNESS enabled. 50% idle without. Drew
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