On 06/30/2010 04:18 PM, Alexander Graf wrote:
Book3s suffered from my really bad shadow MMU implementation so far. So I finally got around to implement a combined hash and list mechanism that allows for much faster lookup of mapped pages.To show that it really is faster, I tried to run simple process spawning code inside the guest with and without these patches: [without] debian-powerpc:~# time for i in {1..1000}; do /bin/echo hello> /dev/null; done real 0m20.235s user 0m10.418s sys 0m9.766s [with] debian-powerpc:~# time for i in {1..1000}; do /bin/echo hello> /dev/null; done real 0m14.659s user 0m8.967s sys 0m5.688s So as you can see, performance improved significantly. v2 -> v3: - use hlist - use global slab cache
Looks good. -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
