On 10/27/05, Lee Revell <[email protected]> wrote:
> On Thu, 2005-10-27 at 17:00 -0700, Avuton Olrich wrote:
> > aggh. Sorry for all the noise,
> >
> > I have all my drives on a linear raid and I had hdparm set to put my
> > IDE drives to sleep after a while, I didn't put it together because it
> > was happening in the middle of recording.
>
> Hey, I think it's a testament to the progress that has been made in the
> past year and a half that people now consider audio dropouts in a "known
> good" app like ecasound to be a kernel bug. For the longest time the
> answer was "linux isn't an RTOS, deal with it".
>
> Lee
Lee, et. all,
Could this possibly be part of what is causing my xrun problems? I
had a huge rash of xruns yesterday. I seem to run into issues after
longer times of inactivity. I hadn't considered this possibility
before.
Unfortunately I don't know how to fix this for SATA drives? hdparm
doesn't say much and sdparm gives me info I don't understand:
lightning ~ # hdparm /dev/sda
/dev/sda:
IO_support = 0 (default 16-bit)
readonly = 0 (off)
readahead = 256 (on)
geometry = 30401/255/63, sectors = 250059350016, start = 0
lightning ~ #
lightning ~ # sdparm /dev/sda
/dev/sda: ATA ST3250823AS 3.03
Read write error recovery mode page:
AWRE 1 [ sav: 1]
ARRE 1 [ sav: 1]
PER 0 [ sav: 0]
Caching (SBC) mode page:
WCE 1 [ sav: 1]
RCD 0 [ sav: 0]
Control mode page:
SWP 0 [ sav: 0]
lightning ~ #
Drive performance seems good:
lightning ~ # hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 2200 MB in 2.00 seconds = 1100.12 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate
ioctl for device
Timing buffered disk reads: 198 MB in 3.03 seconds = 65.45 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate
ioctl for device
lightning ~ #
I'm still waiting for someone to address the problem where I cannot
build 2.4.16-rc5-rt7 so this is on -rt3.
Thanks,
Mark
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