From: Jean Delvare <jdelvare@suse.de>
To: Dave Airlie <airlied@redhat.com>
Cc: "Christian König" <christian.koenig@amd.com>,
"Takashi Iwai" <tiwai@suse.de>,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: Performance regression in ast drm driver
Date: Thu, 1 Nov 2018 16:27:07 +0100 [thread overview]
Message-ID: <20181101162707.598c1718@endymion> (raw)
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?
Thanks,
--
Jean Delvare
SUSE L3 Support
next reply other threads:[~2018-11-01 15:27 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-01 15:27 Jean Delvare [this message]
2018-11-08 12:05 ` Performance regression in ast drm driver Jean Delvare
2018-11-09 0:04 ` David Airlie
2018-11-10 8:39 ` Jean Delvare
2018-11-12 14:36 ` Jean Delvare
2018-11-12 14:45 ` Takashi Iwai
2018-11-12 16:41 ` Jean Delvare
2018-11-13 9:23 ` Thomas Zimmermann
2018-11-13 12:08 ` Jean Delvare
2018-11-13 12:16 ` Thomas Zimmermann
2018-11-12 19:36 ` Thomas Zimmermann
2018-11-13 8:19 ` YC Chen
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