2.6.20 (+2.6.21-rc4) write hang modifier

[Mr. Berkley Shands]

If I set /proc/sys/vm/dirty_ratio to "5" the write lockup happens within
the first MilliSecond, at about 100MB per file system.
If I slew the dirty_ratio to 80, the lockup happens
at about 2GB per file system.

2.6.21-rc4 has the same symptoms, and same lockups.
It appears that mptsas is dropping something.

berkley

--

//E. F. Berkley Shands, MSc//

**Exegy Inc.**

3668 S. Geyer Road, Suite 300

St. Louis, MO  63127

Direct:  (314) 450-5348

Cell:  (314) 303-2546

Office:  (314) 450-5353

Fax:  (314) 450-5354



The Usual Disclaimer follows...
This e-mail and any documents accompanying it may contain legally privileged and/or confidential information belonging to Exegy, Inc. Such information may be protected from disclosure by law. The information is intended for use by only the addressee. If you are not the intended recipient, you are hereby notified that any disclosure or use of the information is strictly prohibited. If you have received this e-mail in error, please immediately contact the sender by e-mail or phone regarding instructions for return or destruction and do not use or disclose the content to others.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/