On 04/17/2012 10:47 PM, Takuya Yoshikawa wrote: > On Mon, 16 Apr 2012 11:36:25 +0800 > Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxxxxxx> wrote: > >> I tested it with kernbench, no regression is found. > > Because kernbench is not at all good test for this. > >> It is not a problem since the iter and spte should be in the cache. > > I have checked dirty-log-perf myself with this patch [01-07]. > > GET_DIRTY_LOG for 1GB dirty pages has become more than 15% slower. > Thanks for your test! Unbelievable, i will do more test and check it more carefully. Could you please open your tool, then i can reproduction it and find the real reason? > > Note: if you had checked the worst case latency with this patch series, > you should have noticed this regression by yourself. > > Auto-test and kernbench are not enough to see the effect of this work. > I will check whether your tool is better then kernbench/autotest after review your tool. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
