Re: [linux-audio-user] Kernel 2.6.15.3-rt tests

El Domingo, 12 de Febrero de 2006 15:00, Mark Knecht escribió:
> On 2/12/06, Marcos Guglielmetti <marcospcmusica@email-addr-hidden> wrote:
> > Just to say that I repeated the same tests with
> > 2.6.13-1-multimedia-386 from DeMuDi and the results are the same,
> > but the system did not got _totally_ paralyzed when i used
> > ardour+jamin with jackd's 128 buffer: it went super slow, unusable,
> > but it did not got paralyzed in this situation.
> >
> > El Domingo, 12 de Febrero de 2006 01:15, Marcos Guglielmetti
escribió:
> > > * BAD: into this session, I opened JAMIN and all the system went
> > > very slow. Then I restarted jack into play only mode and it
> > > worked well: I could master the tracks connected to Jamin from
> > > Ardour outputs.
>
> <AND...>
>
> > > I opened Jamin and all goes well with 1024 buffer, but with the
> > > 128 buffer the system just got paralyzed.
>
> Jamin is very CPU intensive and this machine is probably of about
> average or slightly slow CPU speed these days.
>
> If you open a terminal and run top what do you see when it slows to a
> crawl? Look with Jack operating in both play/record and play modes to
> see what happens.
>
> Good luck,

Thanks Mark: here there are the tests: (i forgot to overclock the cpu to
2000Mhz, I will do it again later, but:)

Reporting:

processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 8
model name : AMD Duron(tm)
stepping : 1
cpu MHz : 1800.247
cache size : 64 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca
cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow
bogomips : 3604.15

MemTotal: 111164 kB

uname -a
Linux 030users 2.6.15.3-rt-musix #1 PREEMPT Sun Feb 12 12:24:53 CET 2006
i686 GNU/Linux

-----------
Only Jamin:

cat /root/.jackdrc
/usr/bin/jackd -R -P89 -t1000 -m -dalsa -dhw:0 -r48000 -p128 -n2 -P -s
-S

It works fine
--------
Only Jamin:
cat /root/.jackdrc
/usr/bin/jackd -R -P89 -t1000 -m -dalsa -dhw:0 -r48000 -p256 -n2 -s -S
-i1

Now, that's ok, ir works fine too
------
(Now jacks did not let me -p128)

        creating alsa driver ... hw:0|hw:0|128|2|48000|1|0|nomon|swmeter|
soft-mode|16bit
        control device hw:0
        configuring for 48000Hz, period = 128 frames, buffer = 2 periods
        ALSA: cannot set period size to 128 frames for capture
        ALSA: cannot configure capture channel
        cannot load driver module alsa

---------
Ardour + Jamin + JACK -p256 duplex mode

 cat /root/.jackdrc
/usr/bin/jackd -R -P89 -t1000 -m -dalsa -dhw:0 -r48000 -p256 -n2 -s -S
-i1

Opening Ardour with a 7 tracks session with a lot of LADSPA plugins, I
got 1 (2) xruns

TOP:
 5557 root 15 0 122m 41m 7544 S 46.0 38.0 1:19.84 ardour
 5546 root 19 0 35732 1252 1088 S 3.6 1.1 0:03.49 jackd

When y press play, it gives 3 (22) xruns

Now I open Jamin and the system goes super slow (unusable)

TOP:

 5557 root 15 0 122m 44m 7696 R 55.4 40.9 2:48.33 ardour
 5863 root 16 0 44492 11m 7276 R 30.0 10.6 0:17.10 jamin
 5546 root 19 0 35736 1292 1104 S 3.1 1.2 0:06.71 jackd
  741 root -81 -5 0 0 0 S 1.5 0.0 0:08.70 IRQ 10
 4146 root 5 -10 115m 6328 2100 S 1.2 5.7 0:27.87 Xorg

xruns 5 (25)

--------

Ardour + Jamin + JACK -p256 play mode

cat /root/.jackdrc
/usr/bin/jackd -R -P89 -t1000 -m -dalsa -dhw:0 -r48000 -p256 -n2 -P -s
-S

Opening Ardour with a 7 tracks session with a lot of LADSPA plugins, I
got again 1 (2) xruns

With Ardour playing:

xruns: 3 (17)

  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
 6221 root 16 0 122m 38m 7312 S 61.3 35.6 0:50.28 ardour
 4146 root 5 -10 114m 6624 1708 S 3.6 6.0 0:35.86 Xorg
 4645 root 15 0 32320 5800 4404 S 3.0 5.2 0:06.99 konsole
 6186 root 18 0 35720 1336 1092 S 2.7 1.2 0:01.78 jackd
  741 root -81 -5 0 0 0 S 1.3 0.0 0:12.08 IRQ 10

Now I open Jamin and the system goes super slow again (unusable), but
not as slow it was before: a little less slow

TOP:

 6221 root 16 0 122m 38m 7336 R 47.7 35.6 1:56.07 ardour
 6433 root 17 0 44516 11m 7208 R 23.6 10.4 0:03.60 jamin
 4146 root 5 -10 115m 7200 2068 S 2.6 6.5 0:37.93 Xorg
  741 root -81 -5 0 0 0 S 1.4 0.0 0:13.07 IRQ 10
 6186 root 18 0 35724 1372 1116 S 1.4 1.2 0:03.72 jackd

xruns: 4 (19)
-------------

Ardour + Jamin + JACK -p512 play mode

 cat /root/.jackdrc
/usr/bin/jackd -R -P89 -t1000 -m -dalsa -dhw:0 -r48000 -p512 -n2 -P -s
-S

Opening Ardour with a 7 tracks session with a lot of LADSPA plugins, I
got again 1 (1) xruns

TOP:

 6614 root 15 0 122m 44m 9088 S 56.7 40.7 0:30.05 ardour
 4146 root 5 -10 114m 5316 1412 S 1.3 4.8 0:42.23 Xorg
 6560 root 15 0 28912 7452 5800 S 1.3 6.7 0:01.63 qjackctl
  741 root -81 -5 0 0 0 S 0.3 0.0 0:14.04 IRQ 10
 4645 root 16 0 32320 5452 4100 R 0.3 4.9 0:08.01 konsole

Now I open Jamin and the system goes a little slower, but usable

TOP (without playing)

 6614 root 15 0 122m 44m 9108 S 51.0 40.8 1:20.63 ardour
 6734 root 15 0 44620 11m 7272 S 32.0 10.6 0:21.35 jamin
 4146 root 5 -10 115m 6068 2012 S 2.4 5.5 0:44.65 Xorg
 6580 root 20 0 35848 1272 1072 S 2.1 1.1 0:01.98 jackd
 4645 root 15 0 32320 5856 4332 S 1.5 5.3 0:08.55 konsole
 6560 root 15 0 28912 7544 5832 S 0.6 6.8 0:02.26 qjackctl
  108 root 15 0 0 0 0 S 0.3 0.0 0:00.12 pdflush
  189 root -60 -5 0 0 0 S 0.3 0.0 0:01.64 IRQ 12
  741 root -81 -5 0 0 0 S 0.3 0.0 0:14.51 IRQ 10
 6797 root 16 0 2196 1092 848 R 0.3 1.0 0:00.04 top
    1 root 16 0 2036 416 388 S 0.0 0.4 0:00.12 init

TOP (playing from ardour connected to jamin)

 6614 root 16 0 122m 44m 9144 R 55.3 40.8 2:25.51 ardour
 6734 root 16 0 44744 11m 7332 R 38.5 10.7 1:02.06 jamin
 4146 root 5 -10 115m 6200 2044 S 2.2 5.6 0:48.64 Xorg
 6560 root 15 0 28912 7772 6020 S 1.1 7.0 0:03.47 qjackctl
  741 root -81 -5 0 0 0 S 0.8 0.0 0:15.16 IRQ 10
    3 root -2 0 0 0 0 S 0.6 0.0 0:00.93
softirq-timer/0
 6580 root 20 0 35848 1272 1072 S 0.6 1.1 0:03.47 jackd
  110 root 15 0 0 0 0 D 0.3 0.0 0:00.37 kswapd0
  257 root -47 -5 0 0 0 S 0.3 0.0 0:02.97 IRQ 14
 4129 root 30 15 3592 1976 500 R 0.3 1.8 0:02.55 preload
 6897 root 16 0 2200 1092 848 R 0.3 1.0 0:00.07 top

xruns 4 (4)

-- 
Marcos Guglielmetti  
Coordinador del desarrollo de Musix GNU+Linux 
(www.musix.org.ar) 
Mirrors: (www.musix.distrux.net) (www.pc-musica.com.ar/musix) 
(www.k-maleon.com/musix)
	
	
		
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