Date: Sun, 14 Apr 1996 18:25:45 -0500 From: Alex Nash <alex@zen.nash.org> To: gpalmer@FreeBSD.ORG Cc: hackers@FreeBSD.ORG Subject: Re: Unices are created equal, but... Message-ID: <199604142325.SAA04908@zen.nash.org>
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> > FreeBSD on UFS: > > 2770803 bytes/second for writing the file > > 3908495 bytes/second for reading the file > > > > Linux on ext2fs: > > 3220442 bytes/second for writing the file > > 1950476 bytes/second for reading the file > > ^^^^^^^ > > Is that 2nd figure for reading the file right? Seems a bit dubious > ... unless they're really doing something screwey, you should get > higher speeds READING than writing ... It's correct. In fact, I just tried it 5 more times to be sure: 1907889 bytes/second 1899594 bytes/second 1900282 bytes/second 1873795 bytes/second 1898218 bytes/second The write speed hovered around 3.2MB/s as before. I admit it's strange, but I also saw this on a P100 with an Adaptec 2940. The reads would be (somewhere in the neighborhood of) 800K/s slower than the writes. After installing FreeBSD on that system, the reads and writes fell within 100K/s of each other. Alex
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