Messages in this thread | | | Date | Sat, 30 May 1998 19:27:56 +0200 | From | Andreas Haumer <> | Subject | Some more data-points for "crashme" |
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Hi all!
In addition to my previous report I would like to add some more data-points:
As some people suggested, I let crashme run on systems with an underclocked AMD CPU. Result: all systems locked hard, with a time period scaling with the lower clock frequency!
Here are the results in detail: 10) MB ASUS P/I-P55T2P4, 64MB RAM, AMD K6-200 at 133 MHz, 2GB IDE HDD, 64MB Swap, Linux-2.0.34pre15, egcs-1.0.2 (same system as in test #3, but CPU underclocked at 133 MHz) -> Crash after 1 hour 50 minutes (17158 Processes)
11) MB ASUS P/I-P55T2P4, 256MB RAM, AMD K6-233 at 133MHz, 2xAHA2940UW, 2GB SCSI + 16GB UW-SCSI RAID5 (5xIBM DCAS-34330), 120MB Swap, Linux-2.0.34pre16, gcc-2.7.3.2 (same system as in test #6, but CPU underclocked at 133MHz) -> Crash after about 30 minutes
It's true that all crashing systems have a ASUS P55T2P4 motherboard. I don't have any other MB available yet, but the boards in question all have revision 3.1, which, according to the manual, support the K6 200 & 233 CPUs.
Some people also mentioned possible problems with AMD CPU's under heavy load, if there's a lack of cooling. As I said in my previous report, all systems under test were used for stress-testing linux-2.0.34prexy before. For several days they executed tests with heavy disk- and network-I/O and high CPU load (system load sometimes went up to 60 and more), all without a single problem! This is the main reason I think the crashes I see must have something to to with the illegal CPU opcodes "crashme" executes, and not with general system instability.
- andreas
-- Andreas Haumer | email: andreas@xss.co.at | PGP key available *x Software + Systeme | phone: +43.1.6001508 | on request. Buchengasse 67/8 | +43.664.3004449 | A-1100 Vienna, Austria | fax: +43.1.6001507 |
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