Date: Wed, 10 Apr 1996 13:27:18 +0200 (MET DST) From: Kees Jan Koster <dutchman@spase.nl> To: freebsd-hackers@FreeBSD.ORG (FreeBSD hackers Mailing list) Subject: dd result. Message-ID: <199604101127.NAA03299@phobos.spase.nl>
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> How comes the 486 needs twice as much time > as a P90 to complete just about any task ? ;-) > > Honestly: I'm not sure what you are doing > in these tests, since the numbers are low > for the NCR SCSI as well as the IDE case. > > I'd guess that both the Seagate and the > Maxtor are old drives (or they'd read more > than 2MB/s in the "Block Input" test). > > > How about a different test: > > # time dd if=/dev/rsd0c of=/dev/null bs=64k count=1000 > 1000+0 records in > 1000+0 records out > 65536000 bytes transferred in 9 secs (7281777 bytes/sec) > 9.32 real 0.02 user 0.24 sys > > (ASUS SP3G with NCR and Quantum Atlas 2GB.) > > What are your numbers for both the NCR and > the EIDE system ? > # time dd if=/dev/rwd0s1 of=/dev/null bs=64k count=1000 1000+0 records in 1000+0 records out 65536000 bytes transferred in 26 secs (2520615 bytes/sec) 26.20 real 0.04 user 0.29 sys Seems to me there's something left to be configured. the system is (the IDE controller is on-board): CPU: 90-MHz Pentium 735\\90 (Pentium-class CPU) Origin = "GenuineIntel" Id = 0x525 Stepping=5 Features=0x1bf<FPU,VME,PSE,MCE,CX8,APIC> wdc0 at 0x1f0-0x1f7 irq 14 on isa wdc0: unit 0 (wd0): <QUANTUM TRB850A> wd0: 810MB (1660176 sectors), 1647 cyls, 16 heads, 63 S/T, 512 B/S
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