[1028] in linux-scsi channel archive
Adaptec 2940UW + IBM DORS-32160W timeouts
daemon@ATHENA.MIT.EDU (yuri mironoff)
Tue Nov 26 18:36:53 1996
Date: Tue, 26 Nov 1996 18:28:52 -0500 (EST)
From: yuri mironoff <yuri@rgti.com>
To: linux-scsi@vger.rutgers.edu
Cc: yuri mironoff <yuri@rgti.com>
Hi,
I'm getting timeouts on the scsi bus when I increase the number of
COMMANDS/LUN from 4 to 8. (I haven't tried anything higher - is there
any point?). This is consistantly reproduceble using "bonnie". Any
ideas? Also "bonnie" measurements seem kinda low for this setup...
I'm running:
Supermicro P6DNE 180Mhz x 2 (2.0.26 SMP kernel), 32 MB ram
Adaptec 2940UW-------8bit----- Quantum FB540 ---- NEC CD (terminated)
|
+------16bit----- IBM DORS-21160W (terminated)
cat /proc/scsi/aic7xxx/0
Adaptec AIC7xxx driver version: 4.0/3.2/4.0
Compile Options:
AIC7XXX_RESET_DELAY : 15
AIC7XXX_CMDS_PER_LUN : 4
AIC7XXX_TWIN_SUPPORT : Enabled
AIC7XXX_TAGGED_QUEUEING: Enabled
AIC7XXX_PAGE_ENABLE : Enabled
AIC7XXX_PROC_STATS : Disabled
Adapter Configuration:
SCSI Adapter: AHA-2940 Ultra
(AIC-788x chipset)
Host Bus: Wide
Base IO: 0xec00
IRQ: 10
SCBs: Used 4, HW 16, Page 255
Interrupts: 1871
Serial EEPROM: True
Extended Translation: Enabled
SCSI Bus Reset: Enabled
Ultra SCSI: Enabled
Target Disconnect: Enabled
*** bonnie results 1k block size ***
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
100 4135 59.0 4063 14.6 1747 11.0 3366 33.7 3803 8.1 49.1 1.4
