Re: [linux-audio-user] Were's the weak link?

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To: A list for linux audio users <linux-audio-user@...>
Date: Saturday, January 20, 2007 - 9:56 pm

>> Can anyone spot where the "weak link" is in my system. I put in this
>> post (what I believe) is the most relevant information...
>>
>> My system...
>> Dell Precision M50 laptop
>> 2 GHz Processor
>> 1 Gig Ram
>> 2.6.16-1.2080.16.rrt.rhfc5.ccrma
>> 7200rpm hard drive
>>
>> 'cat /proc/interrupts' (before disabling peripherals) shows:
>> 11: 8900 XT-PIC [........./ 0] yenta, yenta, yenta,
>> pcmcia2.0, Indigo IO, uhci_hcd:usb1, uhci_hcd:usb2, ohci1394

> What does IRQ 11 look like when the unused drivers are unloaded?

Actually, I never went back to (en)abling the peripherals in BIOS. I'll
wait untill I finally find the culprit and then enable them and see what
happens. So this reflects my current situation...

0: 555937 XT-PIC [........N/ 0] pit
1: 1344 XT-PIC [........./ 1] i8042
2: 0 XT-PIC [........N/ 0] cascade
7: 0 XT-PIC [........./ 0] Intel 82801CA-ICH3, Intel
82801CA-ICH3 Modem
8: 1 XT-PIC [........./ 0] rtc
9: 0 XT-PIC [........./ 0] acpi
11: 7038 XT-PIC [........./ 0] yenta, yenta, Indigo IO,
uhci_hcd:usb1, uhci_hcd:usb2, ohci1394, eth0
12: 24456 XT-PIC [........./ 0] i8042
14: 14998 XT-PIC [........./ 0] ide0
NMI: 0
LOC: 0
ERR: 0
MIS: 0

> Did you run the rtirq script?

During bootup, I see mentions of S88rtirq, so I looked and I see there
is '/etc/rc.d/rc3.d/S88rtirq'.

> Does JACK report xruns when these glitches happen?

While recording with ecasound (with realtime privileges) and running
'jackd -v -R -dalsa -r48000 -p512 -n2 -D -Chw:2 -Phw:2'... during the
interruptions, I received these messages...

(I get interruptions with every combination of periods and buffer sizes
I've tried)

delay of 42746.000 usecs exceeds estimated spare time of 9632.000;
restart ...
delay of 42669.000 usecs exceeds estimated spare time of 9625.000;
restart ...
delay of 42647.000 usecs exceeds estimated spare time of 9608.000;
restart ...
delay of 42646.000 usecs exceeds estimated spare time of 9700.000;
restart ...
delay of 42600.000 usecs exceeds estimated spare time of 9741.000;
restart ...

Thanks... keep the suggestions coming. I'm not going to settle for this
as the result after investing 5 years into Linux/Audio.

Rocco

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Messages in current thread:
Re: [linux-audio-user] Were's the weak link?, Lee Revell, (Sat Jan 20, 4:58 pm)
Re: [linux-audio-user] Were's the weak link?, , (Sat Jan 20, 9:56 pm)
Re: [linux-audio-user] Were's the weak link?, Mike Taht, (Sat Jan 20, 10:56 pm)
Re: [linux-audio-user] Were's the weak link?, Dan Easley, (Sun Jan 21, 7:22 pm)