Iozone Linux filesystem benchmarking tool has another cool utility called "fileop". This utility does file operation on the filesystem and gives the ops/sec for each operation. This tool will be useful to test your filesystem performance as well as storage performance. Or, if you are going to select a filesystem or storage that is going to host huge number of small files (like source codes), then fileop can be used for benchmarking.
Fileop can create files of different size ( with -s option ) and to different directory depth ( with -f option ).
[root@bryant foo367]# /opt/iozone/bin/fileop -f 10 -s 1k
Fileop: File size is 1024, Output is in Ops/sec. (A=Avg, B=Best, W=Worst)
. mkdir rmdir create read write close stat access chmod readdir link unlink delete Total_files
A 10 795 771 1381 22915 1147 2282 1128 312914 1697 742 579 825 809 1000
[root@bryant foo367]#
[root@bryant foo367]# /opt/iozone/bin/fileop -f 40 -s 4k -t
Fileop: File size is 4096, Output is in Ops/sec. (A=Avg, B=Best, W=Worst)
mkdir: Dirs = 1640 Total Time = 2.069957018 seconds
Avg mkdir(s)/sec = 792.29 ( 0.001262169 seconds/op)
Best mkdir(s)/sec = 1039.74 ( 0.000961781 seconds/op)
Worst mkdir(s)/sec = 355.87 ( 0.002810001 seconds/op)
rmdir: Dirs = 1640 Total Time = 2.155941963 seconds
Avg rmdir(s)/sec = 760.69 ( 0.001314599 seconds/op)
Best rmdir(s)/sec = 1273.70 ( 0.000785112 seconds/op)
Worst rmdir(s)/sec = 52.90 ( 0.018905163 seconds/op)
create: Files = 64000 Total Time = 47.258722544 seconds
Avg create(s)/sec = 1354.25 ( 0.000738418 seconds/op)
Best create(s)/sec = 5440.08 ( 0.000183821 seconds/op)
Worst create(s)/sec = 7.50 ( 0.133283138 seconds/op)
write: Files = 64000 Total Time = 58.136307001 seconds
Avg write(s)/sec = 1100.86 ( 0.000908380 seconds/op)
Best write(s)/sec = 3155.98 ( 0.000316858 seconds/op)
Worst write(s)/sec = 11.95 ( 0.083698034 seconds/op)
...
The fileop does perform mkdir, rmdir, create, write, close , stat, write, access, link, unlink, chmod, readdir and gives you performance stats in ops/sec and secs/op.
