Date: Mon, 09 Oct 1995 09:46:01 -0600 From: Warner Losh <imp@village.org> To: hackers@FreeBSD.ORG Subject: Re: VLB Disk Controllers Message-ID: <199510091546.JAA10702@rover.village.org> In-Reply-To: Your message of Mon, 09 Oct 1995 16:31:42 BST
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Here's my numbers from a couple of old disks and an UltraStore 34F under FreeBSD 2.0R: QUANTUM LP240S: rover:[358]> ./disklate /dev/rsd0a Command overhead is 3978 usec (time_4096 = 4635, time_8192 = 5292) transfer speed is 6.23331e+06 bytes/sec rover:[359]> ./disklate /dev/rsd0a Command overhead is 4090 usec (time_4096 = 4880, time_8192 = 5671) transfer speed is 5.18336e+06 bytes/sec rover:[360]> ./disklate /dev/rsd0a Command overhead is 3235 usec (time_4096 = 4626, time_8192 = 6018) transfer speed is 2.94308e+06 bytes/sec SEAGATE ST3655N: rover:[363]> ./disklate /dev/rsd1a Command overhead is 3693 usec (time_4096 = 4686, time_8192 = 5680) transfer speed is 4.12306e+06 bytes/sec rover:[364]> ./disklate /dev/rsd1a Command overhead is 3960 usec (time_4096 = 4849, time_8192 = 5738) transfer speed is 4.60575e+06 bytes/sec rover:[365]> ./disklate /dev/rsd1a Command overhead is 3684 usec (time_4096 = 4766, time_8192 = 5848) Warner
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