On Thu, 12 Sep 2013 14:21:05 +0800 majianpeng <majianpeng@xxxxxxxxx> wrote: > Hi Neil, > How about this patchset? > Thanks! > Jianpeng Ma Sorry - it fell of my todo list. I might not be able to look at it properly for a few weeks (due to leave) but I'll make sure it stays on my list. NeilBrown > >Patch1/2/3 are only to easy implemented for patch4.They don't effect the performance. > > > >Performance Result: > >Requirement: > >A: sync_speed_max = sync_speed_min = 200000 > >B: echo repair > sync_action > > > >Without the patch3: > >TestA: > >fio --rw=read --bs=512k --filename=/dev/md0 --offset=1000199467008 --rate=50M --ratemin=30M --name=test --runtime=600s > >>>READ: io=8861.6MB, aggrb=15123KB/s, minb=15123KB/s, maxb=15123KB/s, mint=600012msec, maxt=600012msec > >cat /proc/mdstat > >>>speed=25522K/sec > > > >TestB: > >fio --rw=write --bs=512k --filename=/dev/md0 --offset=1000199467008 --rate=50M --name=test --runtime=600s > >>>WRITE: io=1939.6MB, aggrb=3309KB/s, minb=3309KB/s, maxb=3309KB/s, mint=600033msec, maxt=600033msec > >cat /proc/mdstat > >>>speed=7732K/sec > > > > > >With the patch3: > >TestA:(Make sure the position of read after resync) > >fio --rw=read --bs=512k --filename=/dev/md0 --offset=1000199467008 --rate=50m --name=test > >>>READ: io=12547MB, aggrb=40810KB/s, minb=40810KB/s, maxb=40810KB/s, mint=314815msec, maxt=314815msec > >cat /proc/mdstat: > >>>speed=43745K/sec > > > >TestB:(Make sure the position of write after resync) > >fio --rw=write --bs=512k --filename=/dev/md0 --offset=1000199467008 --rate=50m --name=test --runtime=600 > >>>WRITE: io=30001MB, aggrb=51200KB/s, minb=51200KB/s, maxb=51200KB/s, mint=600001msec, maxt=600001msec > >cat /proc/mdstat > >>>speed=26686K/sec > > > >TestC:(Make sure the position of read before resync) > >fio --rw=read --bs=512k --filename=/dev/md0 --offset=0 --rate=50m --name=test --runtime=600 > >>>READ: io=29725MB, aggrb=50729KB/s, minb=50729KB/s, maxb=50729KB/s, mint=600004msec, maxt=600004msec > >cat /proc/mdstat > >>>speed=44839K/sec > > > >TestD:(Make sure the positon of write before resync) > >fio --rw=write --bs=512k --filename=/dev/md0 --offset=0 --rate=50m --name=test --runtime=600 > >>> WRITE: io=30001MB, aggrb=51200KB/s, minb=51200KB/s, maxb=51200KB/s, mint=600001msec, maxt=600001msec > >cat /proc/mdstat > >>>speed=30884K/sec > > > >V3: > > patch1: rename a paramter make it more understandable. > > patch2: not change. > > patch3 draw from patch3 of V2. > > patch4: reconstruct some code > > rename some parameters make it more understandable. > > modify some trivial bugs. > > > >V2:http://www.spinics.net/lists/raid/msg44138.html > > > >V1:http://www.spinics.net/lists/raid/msg41710.html > > > > > >Jianpeng Ma (4): > > raid1: Add a filed array_frozen to indicate whether raid in freeze > > state. > > radi1: Relace raise_barrier/lower_barrrier with > > freeze_array/unfreeze_array for reconfigure the array. > > raid1: Add some macros to make code clearly. > > raid1: Rewrite the implementation of iobarrier. > > > > drivers/md/raid1.c | 151 +++++++++++++++++++++++++++++++++++++++++++---------- > > drivers/md/raid1.h | 15 ++++++ > > 2 files changed, 137 insertions(+), 29 deletions(-) > > > >-- > >1.8.1.2
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