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OpenAFS and Kerberos for Windows Development

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Subject: I want my OpenAFS Windows client to be fast
Time: 10:46:00 AM EST
Author:  secureendpoints



There are a number of configuration knobs available to tune the OpenAFS for Windows client.  The most important related to throughput fall into two categories:

How much data can I cache?
CacheSize
Stats

How Fast Can I Read and Write?
BlockSize
ChunkSize
EnableSMBAsyncStore
SMBAsyncStoreSize
RxMaxMTU
SecurityLevel
TraceOption

All of these options are described in Appendix A of the Release Notes.  Here are the values I use:

CacheSize = 60GB (64-bit)  1GB (32-bit)
Stats = 120,000 (64-bit)  30,000 (32-bit)

BlockSize = 4
ChunkSize = 21 (2MB)
EnableSMBAsyncStore = 1
SMBAsyncStoreSize = 262144 (but would use 1MB if I didn't use cellular networks as often)
RxMaxMTU = 9000
SecurityLevel = 1 (when I need speed I use "fs setcrypt" to adjust on the fly)
TraceOption = 0 (no logging)




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