[tahoe-lafs-trac-stream] [tahoe-lafs] #2015: leasedb: high file descriptor usage exposed by tests

[tahoe-lafs]

#2015: leasedb: high file descriptor usage exposed by tests
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 Reporter:  daira                                |          Owner:
     Type:  defect                               |  markberger
 Priority:  major                                |         Status:  new
Component:  code-storage                         |      Milestone:  1.11.0
 Keywords:  leasedb tests reliability file-      |        Version:  1.10.0
  descriptor leak                                |  Launchpad Bug:
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 Running tests on the leasedb or cloud-merge branches may cause the
 {{{trial}}} process to run out of file descriptors. This happens more
 readily on platforms where the default fd limit is small (e.g. 256 on Mac
 OS X), or when using {{{synchronous = NORMAL}}} or {{{FULL}}} (as opposed
 to {{{OFF}}}) options to sqlite for the leasedb.

 If there is a file descriptor leak, we should fix it or work around it;
 otherwise we should use [source:src/allmydata/util/iputil.py
 iputil.increase_rlimits()] to increase the number of fds available on
 platforms where the limits are too small (as we do in node processes).

 See also #1870 for a possibly-related performance regression on the
 leasedb branches.

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2015>
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