lwm@iuvax.cs.indiana.edu (Larry Meehan) (03/09/91)
I'm looking for sites running Ultrix 4.1 on a VAX 8800. We have seen several disturbing problem since we upgraded to 4.1 and I'd like to compare notes with any sysadmins on similar systems. I have a test program which demonstrates what I take to be a bug in the signal handling code when the sleep() call is used. If you have an 8800 running Ultrix 4.1 (or any other SMP Ultrix) I will be happy to mail you the program. Also, we don't seem to be able to use the DMB32 on our system without getting panics due to vaxbi errors. We have swapped out about everything on that BI to no avail. It appears NOT to be a hardware problem at this point. This morning we got a panic freeing free gnode, but no disk errors were reported. My current hypothesis is that there is a mutual exclusion bug and one CPU is stepping on the other. I'm still working with DEC on the problems, but so far they haven't come up with anything satisfactory (and it has been weeks since we started on all this). I would really like to share information with others running the same kind of system. I think we could all benefit. Hmmm... Maybe our site is the only one running Ultrix 4.1 on an 8800. Please tell me I'm not the only one. -- Larry Meehan (lwm@iuvax.cs.indiana.edu)
alan@shodha.enet.dec.com ( Alan's Home for Wayward Notes File.) (03/09/91)
In article <1991Mar8.131235.8900@news.cs.indiana.edu}, lwm@iuvax.cs.indiana.edu (Larry Meehan) writes: } I'm looking for sites running Ultrix 4.1 on a VAX 8800. We have seen several } disturbing problem since we upgraded to 4.1 and I'd like to compare notes } with any sysadmins on similar systems. Compare away... } } I have a test program which demonstrates what I take to be a bug in the } signal handling code when the sleep() call is used. If you have an 8800 } running Ultrix 4.1 (or any other SMP Ultrix) I will be happy to mail you } the program. Ok, but what affect does the program have? } } Also, we don't seem to be able to use the DMB32 on our system without getting } panics due to vaxbi errors. We have swapped out about everything on that BI } to no avail. It appears NOT to be a hardware problem at this point. I have a DMB32. I don't have anything connected to it though and don't really plan to. } } This morning we got a panic freeing free gnode, but no disk errors were } reported. I haven't had any of those. I had one of the file system panics while I was running V3.1, but I think it was related to changing the data by too much. } -- } } Larry Meehan (lwm@iuvax.cs.indiana.edu) -- Alan Rollow alan@nabeth.cxn.dec.com