Hi Dave! >> >> What i want to achieve is to set the log sunit to the maximum possible >> of 64 blks (=256KiB). On 2015-11-03 20:11, Dave Chinner wrote: > > Why? Is there a performance problem with the default setting? > I am seeing very bad performance of "rm" on this file system. Of course I know that RAID-6 is kind of a worst case setup for that workload. But I was hoping that aligning the log correctly plus increasing the stripe size would help. Wouldn't the file system write more of the log at once with a bigger sunit size; resulting in fewer RMW cycles? I am already using delaylog, inode64, nobarrier to mount the fs; lazy-count=1. Maybe moving to an external log would be the best option? tia, Michael _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs