[Lustre-discuss] Performance for Lustre 1.6.5

[Johnlya]

I test touch and ls command of Lustre on Linux 2.6.9-67.0.7.EL_lustre.
1.6.5smp (x86, 64bit, mem:4G,two CPU).
Lustre Filesystem:
one MDS
one OSS(one OST)
I found it some problems:
With the increase in the number of files, Lustre system performance
decrease too much.
1. fileid.sh
#!/bin/bash
for ((i=0; $i<10000; i++))
do
                fileid="/mnt/webfile/test/$i";
                touch $fileid
done
time ./fileid.sh
eal    0m20.493s
user    0m1.930s
sys     0m9.340s

time ls
real    0m2.748s
user    0m0.050s
sys     0m0.610s
touch:10000/20.493=487.97
ls:10000/2.748=3639.01
2.
#!/bin/bash
for ((i=0; $i<1000000; i++))
do
                fileid="/mnt/webfile/test/testm/$i";
                touch $fileid
done
time ./fileid.sh
real    60m56.666s
user    3m11.690s
sys     20m37.190s

real    15m48.615s
user    0m14.530s
sys     3m52.960s

touch:1000000/(60*60+56.666)=273.47
ls:1000000/(15*60+48.615)=1054.16