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Re: [Discuss-gnuradio] SCHED_FIFO and NPTL
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] SCHED_FIFO and NPTL |
Date: |
Wed, 8 Mar 2006 12:25:16 -0800 |
User-agent: |
Mutt/1.5.9i |
On Wed, Mar 08, 2006 at 02:52:14PM -0500, Frank Brickle wrote:
> Eric Blossom wrote:
>
> >...
> >I ended up remounting the relevant filesystem as ext2 to avoid the
> >problem...If we never go to the disk, it might not matter at
> >all.
> > ...
>
> It's been a long time since I looked at these pages:
>
> http://ardour.org/requirements.php
> http://ccrma.stanford.edu/planetccrma/software/tunesystem.html
>
> however they're very informative and probably required reading. The key
> point in connection with what we've been grousing about today is this.
> The essential thing isn't altering the scheduler. It's getting the
> scheduler to run often enough.
Thanks.
> Also I haven't been able to track it down but the other (d'oh) point is,
> if you're streaming to disk, why write to a journaling filesystem? They
> seem to be big fans of external FireWire drives for this kind of thing.
Good point. I guess that's consistent with my switching from ext3 to
ext2 for the data logging ;)
FWIW, I was running RAID-0 stripped across 3 drives. That
configuration using fancy IBM Ultrastar 10K SCSI drives would sustain
100+ MB/s. I suspect that you could get close today using a couple of
el-cheapo 7200 RPM SATA drives.
Eric
- Re: [Discuss-gnuradio] Queries regarding FPGA, Eric Blossom, 2006/03/01
- Re: [Discuss-gnuradio] Queries regarding FPGA, Stephane Fillod, 2006/03/01
- Re: [Discuss-gnuradio] SCHED_FIFO and NPTL, Eric Blossom, 2006/03/08
- Re: [Discuss-gnuradio] SCHED_FIFO and NPTL, Frank Brickle, 2006/03/08
- Re: [Discuss-gnuradio] SCHED_FIFO and NPTL, Eric Blossom, 2006/03/08
- Re: [Discuss-gnuradio] SCHED_FIFO and NPTL, Frank Brickle, 2006/03/08
- Re: [Discuss-gnuradio] SCHED_FIFO and NPTL, Eric Blossom, 2006/03/08
- Re: [Discuss-gnuradio] SCHED_FIFO and NPTL, Robert McGwier, 2006/03/08
- Re: [Discuss-gnuradio] SCHED_FIFO and NPTL, Eric Blossom, 2006/03/08
- Re: [Discuss-gnuradio] SCHED_FIFO and NPTL, Frank Brickle, 2006/03/08
- Re: [Discuss-gnuradio] SCHED_FIFO and NPTL,
Eric Blossom <=
- Re: [Discuss-gnuradio] SCHED_FIFO and NPTL, Lamar Owen, 2006/03/09
- Re: [Discuss-gnuradio] SCHED_FIFO and NPTL, Eric Blossom, 2006/03/09
- Re: [Discuss-gnuradio] SCHED_FIFO and NPTL, Stephane Fillod, 2006/03/08
- Re: [Discuss-gnuradio] SCHED_FIFO and NPTL, Eric Blossom, 2006/03/08
Re: [Discuss-gnuradio] Queries regarding FPGA, amit malani, 2006/03/04