This bug report was migrated from our old Bugzilla tracker.

These attachments are available in the static archive:

• Patch to fix the issue (file_4941.txt, text/plain, 2020-01-13 18:08:12 +0000, 1796 bytes)

Reported in version: HG 1.2
Reported for operating system, platform: Linux, All

Comments on the original bug report:

On 2020-01-13 18:08:12 +0000, Paul Cercueil wrote:

Created attachment 4157
Patch to fix the issue

Quote from the patch:

"On GCW Zero jz4770 platform, I saw higher than usual CPU usage when
running a more recent kernel (4.xx series versus 3.xx). Upon
investigation, it was found that the ALSA pcm file was not blocking
as it should. This resulted in ~30-50,000 system calls a second that
were unnecesary.

After adjusting the order in which SDL requests its pcm blocking mode,
the number of syscalls a second has dropped to a much smaller figure,
< 1,000/sec if I recall correctly. CPU usage also dropped by ~5%."

On 2020-03-23 02:04:35 +0000, Ryan C. Gordon wrote:

Generally we don't mess with SDL 1.2, but this patch was straightforward enough that I've applied it to revision control here: https://hg.libsdl.org/SDL/rev/9c0fc6e28c5e

--ryan.

On 2020-06-24 22:30:11 +0000, Ozkan Sezer wrote:

Does the default/2.0 branch not need this change?