Re: Why actual speed is slower than nominal? (2.6x vs 4x)

2005-05-09 Thread Konstantin Kudin
I tried this pipebuf2 program with 128MB buffer, and it seems like things did not improve. The speed I get is still way below the nominal, and when the writing stalled because of the Knoppix CD access, a visible track on the DVD(+RW) was formed. Previously with such stalls I did not see any visibl

Re: Why actual speed is slower than nominal? (2.6x vs 4x)

2005-05-08 Thread Konstantin Kudin
Very useful! Thanks a lot! It actually seems like even with large files (100s of mb's) the speed is far from nominal at least on my system. Would it be possible to somehow mention this little buffering program on the official growisofs page? I have read that manual quite carefully, and this wa

Re: Why actual speed is slower than nominal? (2.6x vs 4x)

2005-05-04 Thread Peter Osterlund
Konstantin Kudin <[EMAIL PROTECTED]> writes: > I am curious as to why the actual speed I get happens to be a lot > slower than the nominal one. I am using Knoppix 3.8.1 with 2.6.11 > kernel in /dev/hdc, and the DVD writer is /dev/hdd > > If I do not use "hdparm" to set the speed of /dev/hdd to

Re: Why actual speed is slower than nominal? (2.6x vs 4x)

2005-05-03 Thread scdbackup
Hi, > I am curious as to why the actual speed I get happens to be a lot > slower than the nominal one. > If I do not use "hdparm" to set the speed of /dev/hdd to udma2, then > actual speed happens to be even slower. > /dev/cdrom1: "Current Write Speed" is 4.1x1385KBps. > builtin_dd: 2011280*2KB

Why actual speed is slower than nominal? (2.6x vs 4x)

2005-05-03 Thread Konstantin Kudin
Hi there, I am curious as to why the actual speed I get happens to be a lot slower than the nominal one. I am using Knoppix 3.8.1 with 2.6.11 kernel in /dev/hdc, and the DVD writer is /dev/hdd If I do not use "hdparm" to set the speed of /dev/hdd to udma2, then actual speed happens to be even