On Fri, Oct 11, 2013 at 01:31:52PM -0700, Kent Overstreet wrote: > On Fri, Oct 11, 2013 at 03:18:03PM +0800, Shaohua Li wrote: > > Make percpu_ida percpu size/batch configurable. The block-mq-tag will use > > it. > > Can you explain the justification for this? Performance...?
The performance using percpu_ida for tag management? Please see the patch 4 thread. If you ask the justification of making the size/batch configurable, the answer is we might have no enough tags, and default cache size/batch is too aggressive. Thanks, Shaohua -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
