[PlanetCCRMA] Re: Configuring 2.6.11-0.3.rdt.rhfc2.ccrma for 0 xruns...
Mark Knecht
Mark Knecht <markknecht@gmail.com>
Wed Apr 13 11:08:01 2005
Hi,
I tried rearranging interrupts for the cards, removing the USB
drivers by hand and turning ACPI off at the command line. No change in
the xruns. With heavy disk copies taking place and 128/2 settings
(5mS) I am still getting a few xruns:
Note that while I thought I turned off acpi it still seems to be
there. The modules are loaded and I see an acpi interrupt. The rtirq
status info doesn't seem to be following what devices I want to have
higher priority. How do I set that?
Thanks,
Mark
[root@Godzilla root]# /etc/init.d/rtirq status
PID CLS RTPRIO NI PRI %CPU STAT COMMAND
242 FF 80 -5 120 0.0 SW< IRQ 8
407 FF 60 -5 100 0.3 SW< IRQ 10
1151 FF 60 -5 100 0.0 SW< IRQ 5
20 FF 59 -5 99 0.9 SW< IRQ 9
344 FF 50 -5 90 0.0 SW< IRQ 1
263 FF 49 -5 89 0.0 SW< IRQ 12
303 FF 46 -5 86 0.0 SW< IRQ 14
305 FF 45 -5 85 0.0 SW< IRQ 15
411 FF 42 -5 82 0.2 SW< IRQ 11
2533 FF 40 -5 80 0.0 SW< IRQ 7
2555 FF 39 -5 79 0.0 SW< IRQ 4
2556 FF 38 -5 78 0.0 SW< IRQ 3
4061 FF 37 -5 77 0.0 SW< IRQ 6
[root@Godzilla root]# cat /proc/interrupts
CPU0
0: 1483998 XT-PIC timer 0/83998
1: 1439 XT-PIC i8042 0/1439
2: 0 XT-PIC cascade 0/0
7: 1 XT-PIC parport0 0/1
8: 1 XT-PIC rtc 0/1
9: 398235 XT-PIC acpi, hdsp 0/98235
10: 460249 XT-PIC ohci1394, eth0 0/60249
11: 215860 XT-PIC ohci1394 0/15860
12: 47189 XT-PIC i8042 0/47189
14: 21260 XT-PIC ide0 0/21259
15: 38 XT-PIC ide1 1/37
NMI: 0
LOC: 0
ERR: 0
MIS: 0
[root@Godzilla root]#
On 4/13/05, Mark Knecht <markknecht@gmail.com> wrote:
> Fernando & other Planet inhabitants,
> I have turned off Pro Tools for a few days and am trying to better
> configure my Planet box for more serious recording. The current setup
> is:
>
> 1) Athlon XP 1600+/Via MB
> 2) HDSP 9652
> 3) 1394 OHCI #1 - drive 1 & drive 3
> 4) 1394 OHCI #2 - drive 2
>
> My intention is to use the built in 'RAID-like' features in Ardour
> to split audio across multiple hard drives. I'm still in the process
> of getting that set up and tested, but in the process I'm not happy
> with *SOME* of the xruns I'm getting from this machine and I want to
> make sure I'm doing everything possible to get the best performance.
>
> Under normal, no load operation the machine runs fine with a
> setting of 64/2. I can run Aqualung and I see an xrun every few hours
> which is no big deal. However if I do copies from one 1394 drive to
> another 1394 drive with Jack running I am getting an xrun every 30
> seconds like clockwork. I do not know what's causing this and want to
> get rid of it.
>
> One thing I did notice was that when doing copies from one drive to
> another the machine was bumping up against 100% CPU. It typically was
> running at 70% CPU with spikes going higher. Possibly this is normal
> CPU usage as I'm sure Linux wants to copy the files as fast as it can.
> This may not be an issue during recording as Ardour will limit how
> much disk usage it requires. None the less I don't want xruns.
>
> OK, looking through older posts here by Fernando and others I'll
> post the info I can think of to show the state of the box:
>
> [root@Godzilla root]# cat /proc/interrupts
> CPU0
> 0: 6374396 XT-PIC timer 0/74396
> 1: 11410 XT-PIC i8042 2/11410
> 2: 0 XT-PIC cascade 0/0
> 5: 9121 XT-PIC ohci1394, ehci_hcd, uhci_hcd,
> uhci_hcd, uhci_hcd, eth0 0/9121
> 7: 1 XT-PIC parport0 0/1
> 8: 1 XT-PIC rtc 0/1
> 9: 0 XT-PIC acpi, ohci_hcd 0/0
> 10: 645 XT-PIC ohci1394 0/645
> 11: 573308 XT-PIC ohci_hcd, hdsp 0/73308
> 12: 135937 XT-PIC i8042 0/35937
> 14: 61930 XT-PIC ide0 0/61929
> 15: 1428 XT-PIC ide1 0/1427
> NMI: 0
> LOC: 0
> ERR: 0
> MIS: 0
> [root@Godzilla root]#
>
> NOTE: There are no USB devices on this machine. I may end up disabling
> USB totally.
>
> [root@Godzilla root]# cat /proc/asound/cards
> 0 [default ]: H-DSP - Hammerfall DSP
> RME Hammerfall HDSP 9652 at 0xf4800000, irq 11
> [root@Godzilla root]#
>
> [root@Godzilla root]# cat /proc/asound/version
> Advanced Linux Sound Architecture Driver Version 1.0.9rc1.
> Compiled on Mar 22 2005 for kernel 2.6.11-0.3.rdt.rhfc2.ccrma.
> [root@Godzilla root]#
>
> [root@Godzilla root]# /etc/init.d/rtirq status
>
> PID CLS RTPRIO NI PRI %CPU STAT COMMAND
> 242 FF 80 -5 120 0.0 SW< IRQ 8
> 20 FF 60 -5 100 0.0 SW< IRQ 9
> 407 FF 60 -5 100 0.0 SW< IRQ 5
> 961 FF 59 -5 99 0.1 SW< IRQ 11
> 344 FF 50 -5 90 0.0 SW< IRQ 1
> 263 FF 49 -5 89 0.0 SW< IRQ 12
> 303 FF 46 -5 86 0.0 SW< IRQ 14
> 305 FF 45 -5 85 0.0 SW< IRQ 15
> 411 FF 42 -5 82 0.0 SW< IRQ 10
> 2152 FF 40 -5 80 0.0 SW< IRQ 7
> 2179 FF 39 -5 79 0.0 SW< IRQ 4
> 2180 FF 38 -5 78 0.0 SW< IRQ 3
> 3266 FF 37 -5 77 0.0 SW< IRQ 6
>
> [root@Godzilla root]#
>
> NOTE: I would think that I'd want IRQ11 to be the highest priority
> behind system functions, followed by IRQ's 5 & 10 to give me fast disk
> access. How can I accomplish this?
>
> [root@Godzilla root]# lsmod
> Module Size Used by
> snd_seq_dummy 4228 0
> sg 38816 0
> floppy 58448 0
> snd_mixer_oss 21376 1
> realtime 5256 0
> commoncap 6912 1 realtime
> snd_seq_midi 10272 4
> snd_seq_midi_event 8448 1 snd_seq_midi
> snd_seq 60048 6 snd_seq_dummy,snd_seq_midi,snd_seq_midi_event
> snd_hdsp 53796 9
> snd_rawmidi 27424 2 snd_seq_midi,snd_hdsp
> snd_seq_device 9612 4 snd_seq_dummy,snd_seq_midi,snd_seq,snd_rawmidi
> snd_pcm 105608 3 snd_hdsp
> snd_timer 27524 2 snd_seq,snd_pcm
> snd_page_alloc 10756 2 snd_hdsp,snd_pcm
> snd_hwdep 10528 1 snd_hdsp
> snd 68228 18
> snd_seq_dummy,snd_mixer_oss,snd_seq_midi,snd_se
> q_midi_event,snd_seq,snd_hdsp,snd_rawmidi,snd_seq_device,snd_pcm,snd_timer,snd_h
> wdep
> soundcore 9824 2 snd
> nfsd 215072 9
> exportfs 6656 1 nfsd
> lockd 62376 2 nfsd
> parport_pc 27332 1
> lp 12104 0
> parport 35912 2 parport_pc,lp
> autofs4 19844 0
> sunrpc 142276 19 nfsd,lockd
> iptable_filter 2944 0
> ip_tables 22912 1 iptable_filter
> e100 36096 0
> mii 4864 1 e100
> dm_mod 60028 0
> uhci_hcd 31632 0
> ohci_hcd 21640 0
> ehci_hcd 33800 0
> video 15620 0
> container 4352 0
> button 6416 0
> battery 9220 0
> ac 4740 0
> md5 4224 1
> ipv6 259488 8
> ext3 135816 4
> jbd 65944 1 ext3
> sbp2 23688 1
> ohci1394 33540 0
> ieee1394 307380 2 sbp2,ohci1394
> sd_mod 18320 2
> scsi_mod 129736 3 sg,sbp2,sd_mod
> [root@Godzilla root]#
>
> OK, here it looks to me like there are many modules that are probably
> not needed. uhci_hcd, ohci_hcd, ehci_hcd, video and all the ACPI
> stuff. Any reason to think they are causing the 30 second xrun? (APCI
> seems likely. I'll try booting without it.
>
> With that I'll stop for now and see what folks recommend as the
> right steps to take first. I must say that I haven't even recrded with
> the newest versions of Ardour. Probably last time was a month ago, so
> I'll be doing that after I get the 3 drives set up and happy.
>
> In the mean time, thanks!
>
> Cheers,
> Mark
>