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Date: Mon, 21 Jun 2010 21:04:29 +0200 From: Hans Schou <linux@...ou.dk> To: David Dillow <dave@...dillows.org> Cc: alsa-devel@...a-project.org, linux-kernel@...r.kernel.org Subject: Re: [alsa-devel] PROBLEM: SIS7019 stops recording after 42 min 2010/6/21 David Dillow <dave@...dillows.org>: > On Mon, 2010-06-21 at 19:42 +0200, Hans Schou wrote: >> cmdline is now: >> arecord -B 250000 -F 125000 -c 1 -r 44100 -f S16 -M -D hw:0,0 -v arec.wav > This really makes me think the system just cannot keep up. Can you post > the initial output to verify that it is getting two periods per buffer, > please? Then I have to run it again. I do not have it on the screen anymore. I will do that after the test I'm running now - as mentioned before. I have turned on my signal generator with 400Hz. I will give it a try with listen to it, to hear any clicks when the overrun occur. > Also, does it do the same without the -M ? And you may wish to try > longer and shorter periods to see if you get so many overruns. > Also, what storage are you using? Does it support DMA? PIO modes can be > very slow... On a daily basis I use USB flash memory stick and have done this more than a year but always less than 42 min. Right now I'm using old 4GB external hard disk connected through USB. /hans -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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