stream-clone: disable gc for `_entries_walk` duration The number of small container created turn Python in a gc-frenzy that seriously impact performance. This significantly boost performance. The following number comes from a large private repository using perf::stream-locked-section: base-line: 35.04 seconds prev-change: 24.51 seconds (-30%) this-change: 20.88 seconds (-40% from baseline; -15% from previous changes)

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import sys

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from mercurial import (

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    pycompat,

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    util,

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)

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def main(argv):

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    enc = util.urlreq.quote(pycompat.sysbytes(argv[1]))

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    if pycompat.iswindows:

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        fmt = 'file:///%s'

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    else:

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        fmt = 'file://%s'

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    print(fmt % pycompat.sysstr(enc))

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if __name__ == '__main__':

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    main(sys.argv)