ide cdrom performance issue
Running RH9 with xcdroast and three recorders each on its own ide channel configured for ide-scsi. Having trouble with buffer underruns. Am told by xcdroast author that it is a kernel ide driver issue, specifically not using dma for transfers and recommended I try a newer kernel.
My question is whether the 2.5.75 kernel is going to improve this situation before going to the trouble to install it?
Thanks,
L. Baker
Quoted 8 lines · Yossi Down-Under
Running RH9 with xcdroast and three recorders each on its own ide channel configured for ide-scsi. Having trouble with buffer underruns. Am told by xcdroast author that it is a kernel ide driver issue, specifically not using dma for transfers and recommended I try a newer kernel.
My question is whether the 2.5.75 kernel is going to improve this situation before going to the trouble to install it?
2.5.75?! That kernel is ancient, you should download 2.6-test6 and give that a try. Note that you should not then use ide-scsi (don't config it in), and you need to give -dev=/dev/hdc as device argument to cdrecord. Replace hdc with whatever is your cd-r drive.
Signature · 1 line
Jens Axboe
Quoted 7 lines · Jens Axboe
Quoted 6 lines · Yossi Down-Under
Running RH9 with xcdroast and three recorders each on its own ide channel configured for ide-scsi. Having trouble with buffer underruns. Am told by xcdroast author that it is a kernel ide driver issue, specifically not using dma for transfers and recommended I try a newer kernel.
Quoted 7 lines
Quoted 2 lines
My question is whether the 2.5.75 kernel is going to improve this situation before going to the trouble to install it?
2.5.75?! That kernel is ancient, you should download 2.6-test6 and give that a try. Note that you should not then use ide-scsi (don't config it in), and you need to give -dev=/dev/hdc as device argument to cdrecord. Replace hdc with whatever is your cd-r drive.
OK, I did this. There must be some new package for module management required that is not in RH9 as it failed to load the network module when booted so I just compiled it into the kernel instead.
The problem I have now is that without using ide-scsi, xcdroast 0.98alpha14 doesn't see the drive. Will the ide-scsi driver also gain the use of dma transfers or should I go back to the xcdroast author to modify the program to use ide drives without scsi emulation?
Thanks,
L. Baker
Quoted 16 lines · Yossi Down-Under
Quoted 7 lines · Jens Axboe
Quoted 6 lines · Yossi Down-Under
Running RH9 with xcdroast and three recorders each on its own ide channel configured for ide-scsi. Having trouble with buffer underruns. Am told by xcdroast author that it is a kernel ide driver issue, specifically not using dma for transfers and recommended I try a newer kernel.
Quoted 7 lines
Quoted 2 lines
My question is whether the 2.5.75 kernel is going to improve this situation before going to the trouble to install it?
2.5.75?! That kernel is ancient, you should download 2.6-test6 and give that a try. Note that you should not then use ide-scsi (don't config it in), and you need to give -dev=/dev/hdc as device argument to cdrecord. Replace hdc with whatever is your cd-r drive.
Quoted 8 lines
OK, I did this. There must be some new package for module management required that is not in RH9 as it failed to load the network module when booted so I just compiled it into the kernel instead.
The problem I have now is that without using ide-scsi, xcdroast 0.98alpha14 doesn't see the drive. Will the ide-scsi driver also gain the use of dma transfers or should I go back to the xcdroast author to modify the program to use ide drives without scsi emulation?
ide-scsi is deprecated for cd burning, so yes you should probably talk to him about updating xcdroast.
Signature · 1 line
Jens Axboe