[tahoe-lafs-trac-stream] [tahoe-lafs] #1638: Upload of large files consumes >2 the size of the file memory

[tahoe-lafs]

#1638: Upload of large files consumes >2 the size of the file memory
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 Reporter:  zancas                               |          Owner:
     Type:  defect                               |         Status:  new
 Priority:  major                                |      Milestone:
Component:  code-storage                         |  undecided
 Keywords:  reliability availability             |        Version:  1.9.0
  scalability usability performance memory       |  Launchpad Bug:
  large                                          |
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 During upload greater than 2 (~2.5) times the size of shares (both mutable
 and immutable) are consumed on the storage server.  For storageservers
 running with tight memory constraints and/or large shares this is
 problematic.
   Attached is a 1-second-resolution time-series of memory usage generated
 by ps for a 200 MB immutable file upload to an amazon EC2 t1.micro.

   The exact command:  ps -Ovsize,rss -C tahoe

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/1638>
tahoe-lafs <https://tahoe-lafs.org>
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