I patched aic7xxx from 5.1.21 up to 5.1.28 and still have the system
locking up, but it appears it did improve performance (although I'm no
expert on reading these benchmarks):
Before:
-------
-------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 5864 96.1 66517 55.2 18919 47.3 5900 95.9 261232 102.0
21193.5 95.4
After:
------
-------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 5946 97.6 120954 100.4 39223 95.0 5885 96.2 259379 96.3
21271.1 95.7
The system, however, still locks up for 30 seconds to several minutes
several times a day. After three weeks of trying to find some solution
to the problem, I'm running out of things to try. My last attempt was to
lower the CPU Bus speed from 100.3 to 88.3 (which required underclocking
the PII CPU from 400Mhz to 333Mhz). Still, no luck.
I'd really appreciate any suggestions. After three weeks of this, I'm
just at a dead end.
Thanks,
Jeff Hill
2.2.14 kernel with raid-2.2.14-B1 patch
New 2940U2W (2.20.0 bios)
Short, internal Ultra2-LVD/SE cable with built-in terminator.
2xSeagateST39103LW (U2W drives)
Single PII 400Mhz
ASUS P3B-F motherboard (Intel 440BX AGPset); CPU Bus/PCI Freq -
100.3/33.43
Tagged Command Queueing enabled; max 24 commands per device; reset delay
at default 5 seconds
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