Date: Fri, 21 Jun 2002 14:56:48 -0400 From: David Gilbert <dgilbert@velocet.ca> To: freebsd-stable@freebsd.org Subject: vastly lower-than-expected thruput on promise TX2-100 Message-ID: <15635.30448.386701.632000@canoe.velocet.net>
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I bought four idential drives, they probe on system A: atapci1: <Promise TX2 ATA100 controller> port 0x24c0-0x24cf,0x24d0-0x24d3,0x24d8 -0x24df,0x24d4-0x24d7,0x24e0-0x24e7 mem 0xf5000000-0xf5003fff irq 11 at device 6 .0 on pci2 ata2: at 0x24e0 on atapci1 ata3: at 0x24d8 on atapci1 ad4: 76319MB <WDC WD800BB-00CAA0> [155061/16/63] at ata2-master UDMA100 ad6: 76319MB <WDC WD800BB-00CAA0> [155061/16/63] at ata3-master UDMA100 and on system B: atapci1: <Promise ATA66 controller> port 0xcc00-0xcc3f,0xd000-0xd003,0xd400-0xd407,0xd800-0xd803,0xdc00-0xdc07 mem 0xcffe0000-0xcfffffff irq 11 at device 9.0 on pci0 ata2: at 0xdc00 on atapci1 ata3: at 0xd400 on atapci1 ad6: 76319MB <WDC WD800BB-00CAA0> [155061/16/63] at ata3-master UDMA66 ad7: 76319MB <WDC WD800BB-00CAA0> [155061/16/63] at ata3-slave UDMA66 System A is a dual Athlon 1800 MP, System B is an Athlon 1.3Ghz. The two drives in system B perform about 30MB/s each... both read and write ... which is to be expected (UDMA 66) The two drives in system A perform at about 12MB/s each ... which seems to indicate that either the TX2 sucks, or the driver is somewhat broken. Dave. -- ============================================================================ |David Gilbert, Velocet Communications. | Two things can only be | |Mail: dgilbert@velocet.net | equal if and only if they | |http://daveg.ca | are precisely opposite. | =========================================================GLO================ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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