I was running a sequential read test using the filemicro_seqread file using the
following parameters using filebench-1.0.0 on Red Hat Linux - 2.6.18.
FileBench Version 1.0.0
filebench> load filemicro_seqread
2406: 8.407: FileMicro-SeqRead Version 2.0 personality successfully loaded
2406: 8.407: Usage: set $dir=<dir> defaults to /mnt/testfs/
2406: 8.407: set $iosize=<size> defaults to 4096
2406: 8.407: set $filesize=<size> defaults to 3072
2406: 8.407: set $nthreads=<value> defaults to 1
2406: 8.407: set $cached=<bool> defaults to 0
2406: 8.407:
2406: 8.407: run runtime (e.g. run 60)
filebench> run 60
As can be seen from the above parameters, the filesize I create is 3072 (3k).
When I look in to the /mnt/testfs, I see the following:
# ls -lt bigfileset/00000001/00000001
-rw-r--r-- 1 root root 393 Oct 29 2007 bigfileset/00000001/00000001
I see only 393 bytes!! Why would this be?
When I increased the filesize to 20k, I see a file only 2620bytes - about 10X
less. What would I be doing wrong?
The filemicro_seq used is as follows:
set $dir=/mnt/testfs/
set $nthreads=1
set $iosize=4k
set $filesize=20k
set $cached=0
define fileset
name=bigfileset,path=$dir,size=$filesize,entries=$nthreads,dirwidth=1024,prealloc=100,cached=$cached
define process name=filereader,instances=1
{
thread name=filereaderthread,memsize=10m,instances=$nthreads
{
flowop read name=append-file,filesetname=bigfileset,iosize=$iosize,fd=1
}
}
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