1. 09 Aug, 2005 1 commit
  2. 08 Aug, 2005 3 commits
  3. 07 Aug, 2005 1 commit
    • Tim Peters's avatar
      Merge rev 37777 from 3.4 branch. · 8c0c3c66
      Tim Peters authored
      Part of Collector 1860 (the other part is in Zope).
      
      There's no possiblity of rollback here, so no need to insist that the
      data manager support rollbacks.
      
      8c0c3c66
  4. 04 Aug, 2005 3 commits
    • Tim Peters's avatar
      An internal 3.5.0a6 release. · 9f89d9b3
      Tim Peters authored
      9f89d9b3
    • Tim Peters's avatar
      Merge rev 37713 from 3.4 branch. · d6f61513
      Tim Peters authored
      Plug leaks in the ZEO client cache.
      
      ClientCache._evicted():  When deleting the last range of
      non-current tids for an oid, remove the list from the
      noncurrent dict instead of leaving an empty list sitting
      there forever.  This also required adjusting the side-
      effect dance in ClientCache._remove_noncurrent_revisions().
      
      FileCache._makeroom():  This was the major leak -- it
      neglected to remove an evicted object's Entry from the
      key2entry dict.
      d6f61513
    • Philipp von Weitershausen's avatar
      Merge the philikon-zeo-scripts branch: · 59e1bccc
      Philipp von Weitershausen authored
        move things around so that zeo scripts are installed for
        standalone zodb releases but not for zope releases
      59e1bccc
  5. 02 Aug, 2005 1 commit
  6. 01 Aug, 2005 2 commits
  7. 29 Jul, 2005 2 commits
    • Tim Peters's avatar
      Merge rev 37574 from 3.4 branch. · 8c081bef
      Tim Peters authored
      makeroom():  Simplify retrieve+del from filemap.
      8c081bef
    • Tim Peters's avatar
      Merge rev 37563 from 3.4 branch. · f47937f6
      Tim Peters authored
      Removed the `key2size` OIBTree.
      
      Maintaining this is a significant expense; the code didn't
      make real use of it; and every time I've tried to exploit it
      I've ended up with grossly too-large simulated hit rates.
      Would probably take another day to figure out exactly why that
      is, and the simulated rates are "good enough" now without it.
      f47937f6
  8. 26 Jul, 2005 4 commits
    • Tim Peters's avatar
      Merge 3.4.1b1 news. · df4c8dfd
      Tim Peters authored
      df4c8dfd
    • Tim Peters's avatar
      Merge rev 37435 from 3.4 branch. · 7bcf73f8
      Tim Peters authored
      More words; update examples w/ new output.
      7bcf73f8
    • Tim Peters's avatar
      Merge rev 37432 from 3.4 branch. · a138c76e
      Tim Peters authored
      The cache simulation seems good enough to be useful now,
      although the toy app I wrote to generate a 500MB trace
      file doesn't use MVCC in an essential way (some of the
      MVCC simulation code is nevertheless exercised, since
      an invalidation of current data in the presence of MVCC
      always creates a cache record for the newly non-current
      revision).
      
      Still puzzling over what to do when the trace file records
      a load hit but the simulated cache gets a miss.  The
      old simulation code seemed to assume that a store for the same
      oid would show up in the trace file next, and it could get
      the info it needed about the missing object from the store
      trace.  But that isn't true:  precisely because the load was
      a hit in the trace file, the object isn't going to be stored
      again "soon" in the trace file.
      
      Here are some actual-vs-simulated hit rate results, for a
      20MB cache, with a trace file covering about 9 million
      loads, over 3 ZEO client (re)starts:
      
      actual   simulated
      ------   ---------
        93.1        92.7
        79.8        79.0
        68.0        69.1
            
        81.4        81.1  overall
      
      Since the simulated hit rates are both higher and lower
      than the actual hit rates, that argues against a gross
      systematic bias in the simulation (although there may
      be several systematic biases in opposite directions).
      a138c76e
    • Tim Peters's avatar
      Merge rev 37422 from 3.4 branch. · 67d48555
      Tim Peters authored
      Massive rewrite to make simul.py's circular cache aware of
      MVCC.  It isn't blowing up, but it thinks the hit rate is
      100% -- might have missed something there <wink>.
      67d48555
  9. 25 Jul, 2005 1 commit
    • Tim Peters's avatar
      Merge rev 37411 from 3.4 branch. · f46415f5
      Tim Peters authored
      More steps on the way toward having useful cache simulation.
      
      I think the primary hangup now is that simul.py doesn't know
      anything about MVCC.  As a result, it thinks there's significatly
      more free space in the cache than there really is, and that
      probably accounts for it predicting significantly higher hit
      rates than I actually see.
      f46415f5
  10. 23 Jul, 2005 1 commit
    • Tim Peters's avatar
      Merge rev 37389 from 3.4 branch. · 27b61d35
      Tim Peters authored
      Lots of fiddling to work w/ current trace file format.
      
      Output isn't obviously wholly insane, but isn't a reasonably
      close enough match to stats.py output either yet.
      27b61d35
  11. 22 Jul, 2005 5 commits
    • Tim Peters's avatar
      Merge rev 37387 from 3.4 branch. · fb8f5ad2
      Tim Peters authored
      stats.py:  cut the # of file reads by 1/3, and the # of
      struct.unpack() calls by 1/2.
      
      Various bugfixes elsewhere.
      fb8f5ad2
    • Tim Peters's avatar
      Merge rev 37385 from 3.4 branch. · 437ec8a6
      Tim Peters authored
      Many little bugfixes and improvements in stats.py.
      This has survived several 100 MB of trace files
      I generated over the last few days, so it's solid
      now if not necessarily perfect.
      
      Replaced simul.py with the much broader-ranging code
      Jeremy and I were working on a couple years ago,
      although it can't work with the current trace file
      format (no real loss there -- the simul.py it's
      replacing can't work with the current format either).
      437ec8a6
    • Tim Peters's avatar
      Merge rev 37382 from 3.4 branch. · 6b4c92e0
      Tim Peters authored
      Stitch in ZConfig's docs from ZConfig.
      6b4c92e0
    • Tim Peters's avatar
      Merge rev 37380 from 3.4 branch. · ae9265b2
      Tim Peters authored
      Remove this -- it's a way out-of-date copy of the ZConfig
      docs.  I'll stitch them back in from the ZConfig repo next,
      via svn:externals.  Ideally, ZODB shouldn't have this as
      part of its checkout tree at all, but that also has implications
      for the way ZRS gets packaged, etc.
      ae9265b2
    • Tim Peters's avatar
      Merge rev 37375 from 3.4 branch. · 5335331a
      Tim Peters authored
      A large number of changes so that cache tracing isn't
      100% broken -- I can get a trace file now, and stats.py
      doesn't blow up anymore.  Don't yet know whether it's
      reporting sensible things, but it's not obviously insane.
      simul.py doesn't know about the current cache implementation
      either yet.
      5335331a
  12. 21 Jul, 2005 1 commit
    • Tim Peters's avatar
      Merge rev 37372 from 3.4 branch. · 2158579f
      Tim Peters authored
      ClientCache:  made it a new-style class.
      
      FileCache:  Removed the reuse= argument.  IIRC, it made some sense
      when different cache schemes were first being tried, but complicated
      the logic now to no good end.
      
      Nuked the maddening log warnings about reuse=True.  They were never
      helpful and were often confusing.
      
      Added info-level log messages to record the path of the client cache
      file, whether it's persistent or temporary, and if it's persistent
      whether we're creating or reusing it.
      
      Minor changes to comments.
      2158579f
  13. 20 Jul, 2005 1 commit
  14. 19 Jul, 2005 2 commits
  15. 18 Jul, 2005 2 commits
    • Tim Peters's avatar
      Merge rev 37244 from 3.4 branch. · b795c11a
      Tim Peters authored
      Collector 1843:  IISet.keys: bad exception handling.
      
      Bucket_rangeSearch():  De-obfuscated the calls to
      Bucket_findRangeEnd(), so that they stop ignoring
      the latter's error returns (a mind-bending combination
      of embedded assignment nested in an UNLESS macro,
      seemingly copy+paste'd so that the error occurred twice).
      b795c11a
    • Tim Peters's avatar
      Merge rev 37239 from 3.4 branch. · 98ff971b
      Tim Peters authored
      Port from ZODB 3.2.
      
      Collector #1846:  If an uncommitted transaction was found, fsrecover.py
      fell into an infinite loop.  Fixed that, and added a new test
      (testUncommittedAtEnd) to ensure this stays fixed.
      98ff971b
  16. 14 Jul, 2005 3 commits
  17. 12 Jul, 2005 3 commits
    • Tim Peters's avatar
      Merge news from 3.4.1a5. · ac37da01
      Tim Peters authored
      ac37da01
    • Tim Peters's avatar
      Merge rev 33285 from 3.4 branch. · 6ad07564
      Tim Peters authored
      Convert internal uses of subtxns to use savepoints instead.
      
      I suspect BTrees/convert.py should be removed instead.
      6ad07564
    • Tim Peters's avatar
      Merge rev 33276 from 3.4 branch. · 22d59055
      Tim Peters authored
      Revert extra copying in Connection._rollback().
      
      Since TmpStore.reset() had to change too to copy the index anyway,
      it no longer hurts that _rollback() clears the index (as a side
      effect of self._cache.invalidate(src.index)).
      22d59055
  18. 11 Jul, 2005 2 commits
    • Tim Peters's avatar
      Merge rev 33273 from 3.4 branch. · ce0290a6
      Tim Peters authored
      Merge tim-savepoint branch.
      
      Allow rollback to a given savepoint multiple times.
      
      transaction/_transaction.py
          _remove_and_invalidate_after():  Don't remove the
          argument savepoint from the savepoint stack anymore.
      
          abort():  abort(True) relied on the subtxn savepoint
          being invalidated as a side effect of rolling back
          to it.  Invalidate it explicitly now.
      
          Savepoint.rollback():  Don't invalidate self.
      
      ZODB/Connection.py
          Connection._rollback():  Pass a temp container to
          _cache.invalidate(), because that method clears the
          container as a side effect.  Clearing the index
          in a savepoint was a disaster if the savepoint was
          used again.
      
          TmpStore.reset():  Make a copy of the argument index.
          An alternative would be to make all callers make
          copies, but the only caller now thinks of its `state`
          argument as being opaque.
      
      transaction/savepoint.txt
      ZODB/tests/{testSubTransaction.py, testConnectionSavepoint.txt}
          Test the new semantics, and beef up the tests.
      
      transaction/tests/savepointsample.py
          _rollback_savepoint():  Needed to copy the data.
      ce0290a6
    • Tim Peters's avatar
      Merge rev 33265 from 3.4 branch. · 28dd6d89
      Tim Peters authored
      English repairs.
      28dd6d89
  19. 08 Jul, 2005 1 commit
  20. 05 Jul, 2005 1 commit
    • Tim Peters's avatar
      Merge rev 31016 from 3.4 branch. · 3b8d1eb9
      Tim Peters authored
      Simplify.
      
      Primarily, _tindex should have been a dict all along, pack()
      worked too hard at the end, and loadEx() is a minor variant
      of load().
      3b8d1eb9