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Hi Nick, > Anyway, I'll keep experimenting. If anyone from MySQL wants to help look > at this, send me a mail (eg. especially with the sched_setscheduler issue, > you might be able to do something better). I took a look at this today and figured Id document it: http://ozlabs.org/~anton/linux/sysbench/ Bottom line: it looks like issues in the glibc malloc library, replacing it with the google malloc library fixes the negative scaling: # apt-get install libgoogle-perftools0 # LD_PRELOAD=/usr/lib/libtcmalloc.so /usr/sbin/mysqld Anton - 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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