can anyone explain this state?

[Michael <mikore.li@gmail.com>]

Hi,=20

These day, I observed a strange thing when I copy a 100MB file from
nfs server, both client and server is running redhat 9.0 with kernel
2.4.20-8:

$ sudo mount -o
rw,bg,vers=3D3,tcp,timeo=3D600,rsize=3D1024,wsize=3D1024,hard,intr,ac
server1:/home/test filetest
$ time cp ./filetest/new100m /tmp/o100m

real    1m6.575s
user    0m0.040s
sys     0m1.430s
$ time cp ./filetest/new100m /tmp/o100m

real    0m4.964s     =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D> i=
t is so different comparing
with above time!!
user    0m0.030s
sys     0m0.570s
$ sudo umount filetest
$ sudo mount -o
rw,bg,vers=3D3,tcp,timeo=3D600,rsize=3D102400,wsize=3D102400,hard,intr,ac
server1:/home/test filetest
$ time cp ./filetest/new100m /tmp/o100m

real    0m9.075s
user    0m0.020s
sys     0m0.470s
$ time cp ./filetest/new100m /tmp/o100m

real    0m7.501s    =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D>=
only different in 2 seconds!
why not less than 4.9 seconds?
user    0m0.000s
sys     0m0.520s

Thanks!


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