Robustness testing
From Linux NFS
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Contents |
testing Core file operations
There are 3 tools used to test NFSv4 robustness. This tools are used to tests core filesystems functions : read/write/create ... in various configurations.
Each time a NFSv4 is able to complete one test sequence, this test should be conserved for non regression testing.
Testing mount / export
Here is a small program to test that.
This test show nfsv4 can reach 2500 exported/mounted directories on a ia32 machine. When 2500 directories are exported/mounted we can see:
- rpc.mountd uses 40% CPU
- exportfs uses 14% CPU
Links
List of tests tools that should be usefull to test NFSv4.
Main results
Last kernel tested is Linux 2.6.12-rc3 more patches CITI_NFS4_ALL-4.
NFS v4 is able to complete this testes:
- fsx
- fsstress running 5 days in this configuration
- 10 threads
- 100 operation list lenght
- FFSB running 5hours with this profile:
- num_files=1200000
- num_dirs=100
- max_filesize=4096
- min_filesize=4096
- num_threads=10
- read_weight=3
- write_weight=1
- append_weight=1
- write_random=1
- write_size=4096
- write_blocksize=4096
- read_size=4096
- read_blocksize=4096
