Re: [LAU] One or two HD's for audio work

On Thu, 2013-04-11 at 13:38 -0400, Egor Sanin wrote:
> On 4/4/13, Len Ovens <len@email-addr-hidden> wrote:
> > I don't know if it makes any difference, but hard drives stream off the
> > outside of the disk faster than the inside. So using a partition on the
> > high half of the drive will stream data faster.
>
> The small print being that this is only true for a Hard Disk Drives
> (HDD), not true for a Solid State Drive (SSD) which are not uncommon
> these days.

True, but I still have doubts that the HDDs are the bottlenecks. They
aren't that slow and they've got several heads.

Other factors seem to be more important.

When I e.g. move a window, I get audible gaps without getting xruns,
while the audio session is that small, that everything is, resp. should
be in the RAM.

IOW I'm experiencing and I experienced all kinds of inexplicable issues
and IMO it's more likely that something is really fishy, than something
like using 1 instead of 2 drives does cause an issue.

It can't harm to use several drives, but I experienced using 1 drive
only doesn't cause (additional) issues. I own several drives myself and
usually I use 2 drives. Everybody with several drives could make tests
and use one drive only for a test. It shouldn't make a difference.

[rocketmouse@email-addr-hidden 02song.a]$ service rtirq status

  PID CLS RTPRIO NI PRI %CPU STAT COMMAND
   36 FF 90 - 130 0.0 S irq/8-rtc0
  197 FF 85 - 125 0.0 S irq/18-snd_hdsp
  234 FF 80 - 120 0.0 S irq/20-snd_ice1
  236 FF 79 - 119 0.0 S irq/21-snd_ice1
   90 FF 75 - 115 0.0 S irq/19-ehci_hcd
   93 FF 75 - 115 0.0 S irq/16-ohci_hcd
  107 FF 74 - 114 0.1 S irq/17-ohci_hcd
  113 FF 73 - 113 0.0 S irq/17-ohci_hcd
   34 FF 70 - 110 0.0 S irq/1-i8042
   24 FF 50 - 90 0.0 S irq/9-acpi
   50 FF 50 - 90 0.0 S irq/42-radeon
   95 FF 50 - 90 0.0 S irq/14-pata_ati
   96 FF 50 - 90 0.0 S irq/15-pata_ati
  101 FF 50 - 90 0.1 S irq/22-ahci
  195 FF 50 - 90 0.0 S irq/7-parport0
  493 FF 50 - 90 0.0 S irq/43-enp3s0
    3 FF 1 - 41 0.1 S ksoftirqd/0
   13 FF 1 - 41 0.1 S ksoftirqd/1

[rocketmouse@email-addr-hidden 02song.a]$ grep 18: /proc/interrupts
 18: 24 19924 IO-APIC-fasteoi snd_hdspm

Regards,
Ralf

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Received on Fri Apr 12 08:15:02 2013