Hello,
people might remember my question about the E250 server with slower
disk access than a usual PC which I testet by some dd copying. Now
I found a solution:
$ dd if=hd-test.filenof=hd-test.file.out bs=1024k
^^^^^^^^
Seems that there were not an optimal bs-default value on Sparc for this
test. If I set bs explicitely this way I got:
Sparc/Solaris: 45s
Sparc/Linux: 35s !! (We are really good, aren´t we?)
PC/Linux: 61s
By the way it would be of course interesting, how to adjust reading
block size in other applications than dd. I started testing when I
recognized that some PostgreSQL tables I created via
cat tabledefinition | psql database
took much more time than on my PC. Moreover I´m afraid that database
access is slower if some parts of it do not fit into memory.
Any hints how to tune that?
Kind regards
Andreas.
