On 7/8/20 3:53 PM, Guoqing Jiang wrote:
Cost of ktime_get_ns() can be observed as not cheap in high IOPS device,
Could you share some links about it? Thanks.
so not sure the conversion is good. Also could you share what benefit
we can
get with this change?
Without the conversion, we have to track io latency with jiffies in
4th patch.
Then with HZ=100, some rows (such as 1ms, 2ms and 4ms) in that table
don't make sense.
Hmm, I can still output those rows based on HZ_TO_MSEC_NUM, which means
this patch can be dropped since the cost of ktime_get_ns is more expensive.
Thanks,
Guoqing
