Re: Bonnie++ with 1024k stripe SW/RAID5 causes kernel to goto D-state

Justin Piszcz wrote: Kernel: 2.6.23-rc8 (older kernels do this as well) When running the following command: /usr/bin/time /usr/sbin/bonnie++ -d /x/test -s 16384 -m p34 -n 16:10:16:64 It hangs unless I increase various parameters md/raid such as the stripe_cache_size etc.. # ps auxww |

Bonnie++ with 1024k stripe SW/RAID5 causes kernel to goto D-state

Kernel: 2.6.23-rc8 (older kernels do this as well) When running the following command: /usr/bin/time /usr/sbin/bonnie++ -d /x/test -s 16384 -m p34 -n 16:10:16:64 It hangs unless I increase various parameters md/raid such as the stripe_cache_size etc.. # ps auxww | grep D USER PID %C

Re: Help: very slow software RAID 5.

Dean S. Messing wrote: Bill Davidsen wrote: : Dean S. Messing wrote: : > Again, I don't get these speeds. Seq. reads are about : > 170% of the average of my three physical drives if I turn up : > the look-ahead. Then random access reads drops to slightly less : > than my slowest drive. : > :

Re: Backups w/ rsync

Dean S. Messing wrote: > Michael Tokarev writes: [] > : the procedure is something like this: > : > : cd /backups > : rm -rf tmp/ > : cp -al $yesterday tmp/ > : rsync -r --delete -t ... /filesystem tmp > : mv tmp $today > : > : That is, link the previous backup to temp (which takes no s