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Light Load next up previous
Next: Moderate Load Up: The Kernel-Space NFS Server Previous: The Kernel-Space NFS Server

Light Load

We ran the SFS benchmarks with initial load set to 100 for 5 times and incremented the load by 100 at each run. We measured the server performances with different numbers of server threads, 1, 2, 4, 8 and 16. The results were listed here:

Run # of Server # of # of Processes Load Throughput Response Time
  Threads Clients Per Client (Ops/Sec) (Ops/Sec) (Msec/Op)
1 1 4 2 100 98 1.4
2 1 4 2 200 200 2.7
3 1 4 2 300 302 3.3
4 1 4 2 400 402 6.8
1 2 4 2 100 99 1.0
2 2 4 2 200 200 1.7
3 2 4 2 300 302 2.0
4 2 4 2 400 398 3.3
1 4 4 2 100 98 1.0
2 4 4 2 200 200 1.4
3 4 4 2 300 303 1.5
4 4 4 2 400 398 2.1
1 8 4 2 100 98 1.0
2 8 4 2 200 200 1.4
3 8 4 2 300 302 1.6
4 8 4 2 400 398 2.1

The benchmarks show that even for the light load, the kernel-space NFS server outperforms the user-space one by a wide margin. In this test load, 4 kernel NFS server threads provides adequate performance.


next up previous
Next: Moderate Load Up: The Kernel-Space NFS Server Previous: The Kernel-Space NFS Server
H.J. Lu
1999-08-15

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