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Ray Lee wrote: > On Fri, May 2, 2008 at 8:19 AM, Jesper Krogh <jesper@krogh.cc> wrote: >> Jesper Krogh wrote: >> >>>> I'd suspect that after 1e8 loops your CPU got too hot and started to >>>> misbehave. >>>> >>> Hardware is an Sun Fire X4600 (8xdual-core AMD64 processors). The >>> problem seem to be tied to this filesystem. (I cannot havent been able >>> to reproduce it on the /-mounted disk of the same system. So if a cpu >>> problem.. then it shouldn't be tied to a specific filesystem? >>> >>> This is the only activity on the system .. so a load of 1 / 16cpus. >>> >> I've tried to explore this suggestion (the best I could). >> >> There are 2 ext3 filesystems locally mounted. / and this one. Running 16 >> parallel runs of this program on a file on the /-mounted filesystem cannot >> reproduce the problem. If it was linked to hot hardware, I believe I should >> be able to reproduce it this way. The servers are in a 17 degress >> serverroom. >> >> It changes alot when.. it actually happens. The "earliest ones" has been >> from 200000 cycles. > > Run 16 in parallel on /, and another 16 simultaneously on the trouble > filesystem? If you continue to get errors only on the 'trouble' > filesystem, and no errors start occurring on / coincident, then it > sounds pretty localized. That test has been done. I can only reproduce it on this filesystem. But I cannot really conclude that it is only present there.. since sometimes my testprogram just goes on .. and dies past 1 billion cycles. But I have never gotten errors from the / filesystem on the same installation. > BTW, I may have missed this earlier, but does it happen *anywhere* on > the troublesome filesystem (ie, in a newly created subdirectory)? I'll run that test now. -- Jesper -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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