I’m looking for ways to improve Fsys’s speed.
Currently, I’m doing to about 3 files per second on a copy – with
the files being about 2k in size. (That’s right – 6kbytes/second).
How did this happen? I copied 54G of data from one drive to another,
with the second drive being the mirror drive. The copy got slower
and slower as the second (117G partition) filled.
My question: do I want a larger or smaller Fsys cache? I currently
have it set to 64M. Just looking at the .bitmap files on the
various mounted disks comes to:
257040 Jan 21 10:09 /mount/eide0/t78/.bitmap
24890710 Jan 21 10:09 /mount/eide0/t79/.bitmap
4606639 Jan 21 10:09 /mount/eide0/t80/.bitmap
257033 Jan 22 14:17 /mount/eide1/t77/.bitmap
257040 Jan 22 14:17 /mount/eide1/t78/.bitmap
29497349 Jan 22 14:17 /mount/eide1/t79/.bitmap
This is on a 733MHz P3 class of processor…
My second question: are there any other parameters that will
radically affect the speed? The only command line options I have
to Fsys are to increase the number of OCBs (as per the previous thread
about “too many open files in system”).
Robert Krten, PARSE Software Devices +1 613 599 8316.
Realtime Systems Architecture, Books, Video-based and Instructor-led
Training and Consulting at www.parse.com.
Email my initials at parse dot com.