At 03:06 PM 18/10/2004, Julian Elischer wrote: >what are perfomrances when you don't go thrrough the filesystem? > >how fast is: >dd if=/dev/ad0 of=/dev/null bs=128k count=10000 Just as a point of reference, on a 915 board with 915# atacontrol list ATA channel 0: Master: no device present Slave: no device present ATA channel 1: Master: ad2 <ST3120026AS/3.18> Serial ATA v1.0 Slave: no device present 915# dd if=/dev/ad2 of=/dev/null bs=128k count=10000 10000+0 records in 10000+0 records out 1310720000 bytes transferred in 22.493172 secs (58271906 bytes/sec) 915# 915# uname -a FreeBSD 915.sentex.ca 5.3-STABLE FreeBSD 5.3-STABLE #1: Mon Oct 18 10:08:54 EDT 2004 mdtancsa_at_915.sentex.ca:/usr/obj/usr/src/sys/915 i386 915#Received on Mon Oct 18 2004 - 17:11:48 UTC
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