Hi,
在 2024/01/12 12:39, Christoph Hellwig 写道:
On Fri, Jan 12, 2024 at 09:08:25AM +0800, Yu Kuai wrote:
Yes, I realized that, handle the new flag in blk_mq_allow_hctx() is
good, how about following chang?
Who would make that decision and on what grounds?
As you might noticed, Bart and I both met the performance problem in
production due to fair tag sharing in the environment that total driver
tags is not sufficient. Disable fair tag sharing is a straight way to
fix the problem, of course this is not the ideal solution, but make tag
sharing configurable and let drivers make the decision if they want to
disable it really solve the dilemma, and won't have any influence
outside the driver.
I'll be good if you have other proposes.
Thanks,
Kuai
.
