On Fri, Jun 29, 2012 at 01:02:35PM -0600, Andreas Dilger wrote: > There is already code for this in the ext4 uninit extent handling. > Currently the limit is 15(?) blocks, to inflate the write size up > to zero-fill a 64kB chunk on 4kB blocksize filesystems. I wouldn't > object to increasing this to zero out a full 1MB (aligned) chunk > under random IO cases. I agree with you that we can increase it to 1MB chunk, and I will run some tests to see the result. In addition, I am thinking whether we can provide a parameter in sysfs or some other places to adjust this value dynamically. Regards, Zheng -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
