tests/test-propertycache.py.out
author Gregory Szorc <gregory.szorc@gmail.com>
Sun, 20 Nov 2016 16:56:21 -0800
changeset 30461 d195fa651b51
parent 19846 9789670992d6
permissions -rw-r--r--
bdiff: don't check border condition in loop This is pretty much a copy of d500ddae7494, just to a different loop. The condition `p == plast` (`plast == a + len - 1`) was only true on the final iteration of the loop. So it was wasteful to check for it on every iteration. We decrease the iteration count by 1 and add an explicit check for `p == plast` after the loop. Again, we see modest wins. From the mozilla-unified repository: $ perfbdiff -m 3041e4d59df2 ! wall 0.035502 comb 0.040000 user 0.040000 sys 0.000000 (best of 100) ! wall 0.030480 comb 0.030000 user 0.030000 sys 0.000000 (best of 100) $ perfbdiff 0e9928989e9c --alldata --count 100 ! wall 4.097394 comb 4.100000 user 4.100000 sys 0.000000 (best of 3) ! wall 3.597798 comb 3.600000 user 3.600000 sys 0.000000 (best of 3) The 2nd example throws a total of ~3.3GB of data at bdiff. This change increases the throughput from ~811 MB/s to ~924 MB/s.
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=== property cache ===
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calllog: []
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cached value (unfiltered): NOCACHE
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= first access on unfiltered, should do a call
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access: 0
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calllog: [0]
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cached value (unfiltered): 0
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= second access on unfiltered, should not do call
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access 0
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calllog: [0]
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cached value (unfiltered): 0
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= first access on "visible" view, should do a call
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cached value ("visible" view): NOCACHE
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access: 7
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calllog: [0, 7]
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cached value (unfiltered): 0
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cached value ("visible" view): 7
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access: 7
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cached value (unfiltered): 0
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cached value ("visible" view): 7
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= no effect on other view
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cached value ("immutable" view): NOCACHE
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access: 9
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calllog: [0, 7, 9]
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cached value (unfiltered): 0
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cached value ("visible" view): 7
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cached value ("immutable" view): 9
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=== unfiltered property cache ===
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unficalllog: []
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cached value (unfiltered):       NOCACHE
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cached value ("visible" view):   NOCACHE
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access (unfiltered): 100
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unficalllog: [100]
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cached value (unfiltered):       100
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unficalllog: [100]
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= access on view should use the unfiltered cache
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access ("visible" view):   100
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access ("immutable" view): 100
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cached value (unfiltered):       100
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cached value ("visible" view):   NOCACHE
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= even if we clear the unfiltered cache
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cached value (unfiltered):       NOCACHE
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cached value ("visible" view):   NOCACHE
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cached value ("immutable" view): NOCACHE
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unficalllog: [100]
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access ("visible" view):   100
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unficalllog: [100, 100]
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cached value (unfiltered):       100
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cached value ("visible" view):   NOCACHE
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cached value (unfiltered):       100
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cached value ("visible" view):   NOCACHE
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