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comparison mercurial/ui.py @ 35929:e49c39ffeac2

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ui: improve performance for multi-component writes It is more efficient to pass down one large string to the output streams than many small ones. For a ``hg diff`` test case, it improves time from 2m26s to 2m8s. Differential Revision: https://phab.mercurial-scm.org/D1939
author Joerg Sonnenberger <joerg@bec.de>
date Thu, 25 Jan 2018 20:00:58 +0100
parents 4e377c43e80b
children 4b1c04082cdc
comparison
equal deleted inserted replaced
35928:c8e2d6ed1f9e 35929:e49c39ffeac2
914 def _write(self, *msgs, **opts): 914 def _write(self, *msgs, **opts):
915 self._progclear() 915 self._progclear()
916 # opencode timeblockedsection because this is a critical path 916 # opencode timeblockedsection because this is a critical path
917 starttime = util.timer() 917 starttime = util.timer()
918 try: 918 try:
919 for a in msgs: 919 self.fout.write(''.join(msgs))
920 self.fout.write(a)
921 except IOError as err: 920 except IOError as err:
922 raise error.StdioError(err) 921 raise error.StdioError(err)
923 finally: 922 finally:
924 self._blockedtimes['stdio_blocked'] += \ 923 self._blockedtimes['stdio_blocked'] += \
925 (util.timer() - starttime) * 1000 924 (util.timer() - starttime) * 1000