Slab poisoning ain't cheap
Posted Mar 9, 2006 6:18 UTC (Thu) by bos
Parent article: Double kfree() errors
One reason why slab poisoning isn't used much is that it slows systems down drastically. For example, it's not unusual for it to cause netperf (a TCP performance benchmark) results to drop by 40% to 70%.
This sort of slowdown and the vast increase in bus traffic that goes with it can then cause other fun, such as masking the effects of race conditions.
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