Re: [RFC 2/2] Track io_ticks at microsecond granularity.

On Mon, Jun 08, 2020 at 09:07:24PM -0700, Josh Snyder wrote: > Previously, we performed truncation of I/O issue/completion times during > calculation of io_ticks, counting only I/Os which cross a jiffy > boundary. The effect is a sampling of I/Os: at every boundary between > jiffies we ask "is

[RFC 2/2] Track io_ticks at microsecond granularity.

Previously, we performed truncation of I/O issue/completion times during calculation of io_ticks, counting only I/Os which cross a jiffy boundary. The effect is a sampling of I/Os: at every boundary between jiffies we ask "is there an outstanding I/O" and increment a counter if the answer is yes.