On 2017/4/10 23:10, Mel Gorman wrote: > On Mon, Apr 10, 2017 at 10:31:48PM +0800, zhong jiang wrote: >> Hi, Mel >> >> The patch I had test on arm64. I find the great degradation. I test it >> by micro-bench. >> The patrly data is as following. and it is stable. That stands for the >> allocate and free time. >> > What type of allocations is the benchmark doing? In particular, what context > is the microbenchmark allocating from? Lastly, how did you isolate the > patch, did you test two specific commits in mainline or are you comparing > 4.10 with 4.11-rcX? > Hi, Mel
benchmark adopt 0 order allocation. just insmod module allocate memory by alloc_pages. it is not interrupt context. I test the patch in linux 4.1 stable. In x86 , it have 10% improve. but in arm64, it have great degradation. Thanks zhongjiang
