Messages in this thread | | | Date | Thu, 8 Nov 2018 13:05:09 +0100 | From | Jean Delvare <> | Subject | Re: Performance regression in ast drm driver |
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On Thu, 1 Nov 2018 16:27:07 +0100, Jean Delvare wrote: > Hi David, > > The following commit: > > commit 7cf321d118a825c1541b43ca45294126fd474efa > Author: Dave Airlie > Date: Mon Oct 24 15:37:48 2016 +1000 > > drm/drivers: add support for using the arch wc mapping API. > > is causing a huge performance regression for the ast drm driver. In a > text console, if I call "cat" on a large text file, it takes almost > twice as much time to be displayed and scrolled completely. > > Can you please check that the ast driver portion of that commit is both > correct and complete?
And in the meantime, what bad will happen if we just revert the ast portion of that commit?
Thanks, -- Jean Delvare SUSE L3 Support
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