Date: Tue, 6 Apr 1999 12:15:47 -0500 (CDT) From: Ken Brownfield <kenb@irridia.com> To: freebsd-questions@freebsd.org Subject: Re: Disk I/O crushes Ethernet I/O (3.0R) Message-ID: <199904061715.MAA18806@asooo.irridia.com> In-Reply-To: <3709BFD6.A1BC378@tdx.co.uk> from Karl Pielorz at "Apr 6, 1999 9: 3:34 am"
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Karl Pielorz: |Ken: |> During periods of disk activity (copying a large file, etc.) all |> network traffic virtually comes to a halt. If I run the cp during |> an FTP file transfer, my network transfer rate is dropped by about |> 80%. Other network services suffer the same massive packet |> deprivation. | |Are you using DMA with the IDE drive? (and are you _sure_ your using DMA with |the IDE drive? :) Do you mean within the mobo BIOS, or an "optional" kernel option? If the former, I'm pretty sure it's cranked up. If the latter, I don't know. (Where's a good place to get flags info for the wd driver?) But I'll verify that, thanks. |I have a similar setup here (Dual P-Pro, 256Mb RAM, fxp0, IDE + SCSI). The IDE |drives suck, even with DMA etc. - they're no match for 'decent' SCSI drives |(but they are cheap). They're OK for 'straight line speed', but I find for [...] Yes, I'm a SCSI zealot myself, but even given IDE it shouldn't completely crush network throughput -- it doesn't hurt other operating systems at all... If the 3.1R upgrade and IRQ/BIOS tweaking doesn't solve it, I'll probably upgrade to SCSI. Thanks for the help, and any help anyone else can offer, -- Ken. kenb@irridia.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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