[tahoe-dev] [tahoe-lafs] #983: high CPU load on storage servers when uploading large mutable file

[tahoe-lafs]

#983: high CPU load on storage servers when uploading large mutable file
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 Reporter:  zooko                       |           Owner:           
     Type:  defect                      |          Status:  new      
 Priority:  major                       |       Milestone:  undecided
Component:  code-storage                |         Version:  1.6.0    
 Keywords:  performance mutable upload  |   Launchpad_bug:           
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 Jody Harris and Justin Stottlemyer both reported that uploading a large
 mutable file causes high CPU load on storage servers. Brian then found
 this bug: http://foolscap.lothar.com/trac/ticket/149 (O(n**2) CPU/malloc
 during receive of large strings) which could explain their problems.
 Jody's [http://allmydata.org/pipermail/tahoe-dev/2010-March/004049.html
 report was on the mailing list] and Justin's was #962.

 The next step is for Brian to fix this issue in foolscap and then for Jody
 and Justin to test out the new version of foolscap with Tahoe-LAFS and see
 if that fixes that problem.

-- 
Ticket URL: <http://allmydata.org/trac/tahoe/ticket/983>
tahoe-lafs <http://allmydata.org>
secure decentralized file storage grid