Date: Mon, 01 Apr 1996 16:28:14 +0530 From: A JOSEPH KOSHY <koshy@india.hp.com> To: Kees Jan Koster <dutchman@spase.nl> Cc: hackers@freebsd.org Subject: Re: HDD cpu usage (IDE vs. SCSI). Message-ID: <199604011058.AA014696294@fakir.india.hp.com> In-Reply-To: Your message of "Mon, 01 Apr 1996 11:03:46 %2B0200." <199604010903.LAA07931@deimos.spase.nl>
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kjk> I was told that cpu usage of SCSI disks was lower than that of IDE disks. [snip] This is generally true if the controller is a bus mastering device. However some of the cheaper SCSI controllers require CPU intervention to read the data from their internal buffers into system memory. These are probably as heavy on CPU as IDE. Would some system experts care to comment? Koshy
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