From: Jaroslav Kysela <perex@perex.cz>
To: Pavel Hofman <pavel.hofman@ivitera.com>,
Go Peppy <peppy.player@gmail.com>,
alsa-devel@alsa-project.org
Subject: Re: pcm_meter.c issue at s16_update
Date: Tue, 13 Oct 2020 19:35:36 +0200 [thread overview]
Message-ID: <fb010ee6-3c20-0d2a-1be4-67500253740b@perex.cz> (raw)
In-Reply-To: <f05763b6-7b1a-29d1-3072-0642bca3d306@ivitera.com>
Dne 17. 09. 20 v 21:13 Pavel Hofman napsal(a):
> Hi,
>
> Dne 15. 09. 20 v 5:40 Go Peppy napsal(a):
>>
>> Just to remind what the issue is - while switching from one web radio
>> station to another there is a high CPU usage for about 20 seconds. Because
>> of that high CPU consumption almost all other processes are blocked.
>
> 20 seconds is only due to 32bit kernel on RPi. On 64bit machines the
> boundary value is usually many orders of magnitude larger, basically
> making the method never finish.
Could you try this patch?
https://github.com/alsa-project/alsa-lib/commit/a6c8ac0c85ca1b16684a687c7000c73aa38b7776
It should prevent the big copies which are definitely nonsense and this change
does not hide the real problem.
Jaroslav
>
> With regards,
>
> Pavel.
>
--
Jaroslav Kysela <perex@perex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.
next prev parent reply other threads:[~2020-10-13 17:36 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-15 3:40 pcm_meter.c issue at s16_update Go Peppy
2020-09-17 19:13 ` Pavel Hofman
2020-10-13 17:35 ` Jaroslav Kysela [this message]
2020-10-15 3:59 ` Go Peppy
-- strict thread matches above, loose matches on Subject: below --
2020-07-26 18:20 Pavel Hofman
2020-07-28 16:46 ` Pavel Hofman
2020-07-28 17:04 ` Takashi Iwai
2020-07-28 18:04 ` Pavel Hofman
2020-07-28 18:54 ` Pavel Hofman
2020-08-02 17:50 ` Pavel Hofman
2020-08-03 6:17 ` Takashi Iwai
2020-08-03 7:22 ` Jaroslav Kysela
2020-08-03 10:48 ` Pavel Hofman
2020-08-09 7:05 ` Pavel Hofman
2020-08-09 20:29 ` Jaroslav Kysela
2020-08-09 21:05 ` Pavel Hofman
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