[tahoe-lafs-trac-stream] [Tahoe-LAFS] #3955: High-level benchmarking suite

[Tahoe-LAFS]

#3955: High-level benchmarking suite
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 Reporter:  itamarst  |          Owner:
     Type:  task      |         Status:  new
 Priority:  normal    |      Milestone:  undecided
Component:  unknown   |        Version:  n/a
 Keywords:            |  Launchpad Bug:
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 We should have a broader benchmarking attempt, involving:

 - Defining metrics
 - Defining goals

 Two aspects:

 - User experience
 - Server-side load

 UX is probably more important at this point, but eventually if that's
 finished server load will become an issue.

 Metrics:

 - Latency (single upload/download)
 - Throughput (batch uploads/downloads)

 Bottlenecks will be network latency, CPU, network bandwidth. If we've hit
 point where network bandwidth is the bottleneck, we're done optimizing.

 Throughput depends on usage patterns of:

 - `tahoe cp`
 - `tahoe backup`
 - sftp
 - Magic Folders

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/3955>
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