rmuir commented on issue #15212:
URL: https://github.com/apache/lucene/issues/15212#issuecomment-3387385073
Currently the windows runner is our slowest. I had a look at the latest
windows run:
```
The slowest tests during this run:
14.15s TestSpellChecker.testConcurrentAccess (:lucene:suggest)
12.49s TestAssertingDocValuesFormat.testRandomAdvanceNumeric
(:lucene:test-framework)
10.73s TestIndexWriterNRTIsCurrent.testIsCurrentWithThreads (:lucene:core)
10.36s TestSerializedIOCountingDirectory.testRandomLong
(:lucene:test-framework)
9.70s TestDocumentDictionary.testWithDeletions (:lucene:suggest)
8.80s TestIndexWriterMerging.testForceMergeDeletes3 (:lucene:core)
8.35s TestLRUQueryCache.testConcurrency (:lucene:core)
8.14s TestAnalyzingInfixSuggester.testBasicContext (:lucene:suggest)
7.40s TestListUtils.testGetAllItems (:lucene:luke)
6.53s TestDirectIODirectory.testThreadSafetyInListAll (:lucene:misc)
```
Some tests are slower than usual on windows runner, because on windows there
is synchronization around a file's position, synchronous metadata etc (e.g.
niofsdirectory does not really "work" concurrently). So lots of seeking and
lots of file accesses can make the tests run slower than what you might
experience on linux/mac. Just something to watch out for.
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