Messages in this thread | | | Date | Thu, 14 Feb 2002 11:17:42 -0500 (EST) | From | "Richard B. Johnson" <> | Subject | Strange disk-write speeds |
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Weird. I have two identical SCSI drives. They both synchronize at 40 Mb/s on my Buslogic controller. They are the two ... Vendor: SEAGATE Model: ST318233LWV Rev: 0002 ... drives shown below.
They both have ext2 file-systems occupying a single partition. The time to write a file that fills up the file-system on the "Id: 01" drive is about 1/2 an hour and the time to write a file that fills up the file-system on "Id: 02" is about 1/2 day!
This is with the file created with "O_SYNC". If the file is not created with "O_SYNC", there is no apparent difference in write speed.
If I swap the jumpers on the two drives to isolate the drives from the problem, the slooooo drive is the logical "ID: 02", always... not the physical one!
Attached devices: Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: SEAGATE Model: ST32171W Rev: 0484 Type: Direct-Access ANSI SCSI revision: 02 Host: scsi0 Channel: 00 Id: 01 Lun: 00 Vendor: SEAGATE Model: ST318233LWV Rev: 0002 Type: Direct-Access ANSI SCSI revision: 03 Host: scsi0 Channel: 00 Id: 02 Lun: 00 Vendor: SEAGATE Model: ST318233LWV Rev: 0002 Type: Direct-Access ANSI SCSI revision: 03 Host: scsi0 Channel: 00 Id: 04 Lun: 00 Vendor: YAMAHA Model: CRW6416S Rev: 1.0b Type: CD-ROM ANSI SCSI revision: 02
`uname -a` Linux chaos 2.4.1 #39 SMP Wed Jan 2 14:35:06 EST 2002 i686
Does anybody have a clue?
Cheers, Dick Johnson
Penguin : Linux version 2.4.1 on an i686 machine (797.90 BogoMips).
I was going to compile a list of innovations that could be attributed to Microsoft. Once I realized that Ctrl-Alt-Del was handled in the BIOS, I found that there aren't any.
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