Messages in this thread | | | Date | Fri, 28 Oct 2005 07:52:27 -0700 | From | Mark Knecht <> | Subject | Re: Overruns are killing my recordings. |
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On 10/27/05, Lee Revell <rlrevell@joe-job.com> 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.
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