upstream/mercurial-mirror Files · contrib/Makefile.python

merge: perform background file closing in batchget...

merge: perform background file closing in batchget As demonstrated with stream clones, closing files on background threads on Windows can yield a significant speedup because closing files that have been created/appended to is slow on Windows/NTFS. Working directory updates can write thousands of files. Therefore it is susceptible to excessive slowness on Windows due to slow file closes. This patch enables background file closing when performing working directory file writes. The impact when performing an `hg up tip` on mozilla-central (136,357 files) from an empty working directory is significant: Before: 535s (8:55) After: 133s (2:13) Delta: -402s (6:42) That's a 4x speedup! By comparison, that same machine can perform the same operation in ~15s on Linux. So Windows went from ~35x to ~9x slower. Not bad but there's still work to do. As a reminder, background file closing is only activated on Windows because it is only beneficial on that platform. So this patch shouldn't change non-Windows behavior at all. It's worth noting that non-Windows systems perform working directory updates with multiple processes. Unfortunately, worker.py doesn't yet support Windows. So, there is still plenty of room for making working directory updates faster on Windows. Even if multiple processes are used on Windows, I believe background file closing will still provide a benefit, as individual processes will still be slowed down by the file close bottleneck (assuming the I/O system isn't saturated).

Yuya Nishihara - - Load All Authors

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      PYTHONVER=2.7.10

      PYTHONNAME=python-

      PREFIX=$(HOME)/bin/prefix-$(PYTHONNAME)$(PYTHONVER)

      SYMLINKDIR=$(HOME)/bin

      help:

      	@echo

      	@echo 'Make a custom installation of a Python version'

      	@echo

      	@echo 'Common make parameters:'

      	@echo '  PYTHONVER=...    [$(PYTHONVER)]'

      	@echo '  PREFIX=...       [$(PREFIX)]'

      	@echo '  SYMLINKDIR=...   [$(SYMLINKDIR) creating $(PYTHONNAME)$(PYTHONVER)]'

      	@echo

      	@echo 'Common make targets:'

      	@echo '  python    - install Python $$PYTHONVER in $$PREFIX'

      	@echo '  symlink   - create a $$SYMLINKDIR/$(PYTHONNAME)$$PYTHONVER symlink'

      	@echo

      	@echo 'Example: create a temporary Python installation:'

      	@echo '  $$ make -f Makefile.python python PYTHONVER=${PYTHONVER} PREFIX=/tmp/p27'

      	@echo '  $$ /tmp/p27/bin/python -V'

      	@echo '  Python 2.7'

      	@echo

      	@echo 'Some external libraries are required for building Python: zlib bzip2 openssl.'

      	@echo 'Make sure their development packages are installed systemwide.'

      # fedora: yum install zlib-devel bzip2-devel openssl-devel

      # debian: apt-get install zlib1g-dev libbz2-dev libssl-dev

      	@echo

      	@echo 'To build a nice collection of interesting Python versions:'

      	@echo '  $$ for v in 2.{6{,.1,.2,.9},7{,.8,.10}}; do'

      	@echo '    make -f Makefile.python symlink PYTHONVER=$$v || break; done'

      	@echo 'To run a Mercurial test on all these Python versions:'

      	@echo '  $$ for py in `cd ~/bin && ls $(PYTHONNAME)2.*`; do'

      	@echo '    echo $$py; $$py run-tests.py test-http.t; echo; done'

      	@echo

      export LANGUAGE=C

      export LC_ALL=C

      python: $(PREFIX)/bin/python docutils

      	printf 'import sys, zlib, bz2, docutils, ssl' | $(PREFIX)/bin/python

      PYTHON_SRCDIR=Python-$(PYTHONVER)

      PYTHON_SRCFILE=$(PYTHON_SRCDIR).tgz

      $(PREFIX)/bin/python:

      	[ -f $(PYTHON_SRCFILE) ] || wget http://www.python.org/ftp/python/$(PYTHONVER)/$(PYTHON_SRCFILE) || curl -OL http://www.python.org/ftp/python/$(PYTHONVER)/$(PYTHON_SRCFILE) || [ -f $(PYTHON_SRCFILE) ]

      	rm -rf $(PYTHON_SRCDIR)

      	tar xf $(PYTHON_SRCFILE)

      	# Debian/Ubuntu disables SSLv2,3 the hard way, disable it on old Pythons too

      	-sed -i 's,self.*SSLv[23]_method(),0;//\0,g' $(PYTHON_SRCDIR)/Modules/_ssl.c

      	# Find multiarch system libraries on Ubuntu and disable fortify error when setting argv

      	LDFLAGS="-L/usr/lib/`dpkg-architecture -qDEB_HOST_MULTIARCH`"; \

      	BASECFLAGS=-U_FORTIFY_SOURCE; \

      	export LDFLAGS BASECFLAGS; \

      	cd $(PYTHON_SRCDIR) && ./configure --prefix=$(PREFIX) && make all SVNVERSION=pwd && make install

      	printf 'import sys, zlib, bz2, ssl' | $(PREFIX)/bin/python

      	rm -rf $(PYTHON_SRCDIR)

      DOCUTILSVER=0.12

      DOCUTILS_SRCDIR=docutils-$(DOCUTILSVER)

      DOCUTILS_SRCFILE=$(DOCUTILS_SRCDIR).tar.gz

      docutils: $(PREFIX)/bin/python

      	@$(PREFIX)/bin/python -c 'import docutils' || ( set -ex; \

      	[ -f $(DOCUTILS_SRCFILE) ] || wget http://downloads.sourceforge.net/project/docutils/docutils/$(DOCUTILSVER)/$(DOCUTILS_SRCFILE) || [ -f $(DOCUTILS_SRCFILE) ]; \

      	rm -rf $(DOCUTILS_SRCDIR); \

      	tar xf $(DOCUTILS_SRCFILE); \

      	cd $(DOCUTILS_SRCDIR) && $(PREFIX)/bin/python setup.py install --prefix=$(PREFIX); \

      	$(PREFIX)/bin/python -c 'import docutils'; \

      	rm -rf $(DOCUTILS_SRCDIR); )

      symlink: python $(SYMLINKDIR)

      	ln -sf $(PREFIX)/bin/python $(SYMLINKDIR)/$(PYTHONNAME)$(PYTHONVER)

      .PHONY: help python docutils symlink

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				PYTHONVER=2.7.10
				PYTHONNAME=python-
				PREFIX=$(HOME)/bin/prefix-$(PYTHONNAME)$(PYTHONVER)
				SYMLINKDIR=$(HOME)/bin

				help:
				@echo
				@echo 'Make a custom installation of a Python version'
				@echo
				@echo 'Common make parameters:'
				@echo ' PYTHONVER=... [$(PYTHONVER)]'
				@echo ' PREFIX=... [$(PREFIX)]'
				@echo ' SYMLINKDIR=... [$(SYMLINKDIR) creating $(PYTHONNAME)$(PYTHONVER)]'
				@echo
				@echo 'Common make targets:'
				@echo ' python - install Python $$PYTHONVER in $$PREFIX'
				@echo ' symlink - create a $$SYMLINKDIR/$(PYTHONNAME)$$PYTHONVER symlink'
				@echo
				@echo 'Example: create a temporary Python installation:'
				@echo ' $$ make -f Makefile.python python PYTHONVER=${PYTHONVER} PREFIX=/tmp/p27'
				@echo ' $$ /tmp/p27/bin/python -V'
				@echo ' Python 2.7'
				@echo
				@echo 'Some external libraries are required for building Python: zlib bzip2 openssl.'
				@echo 'Make sure their development packages are installed systemwide.'
				# fedora: yum install zlib-devel bzip2-devel openssl-devel
				# debian: apt-get install zlib1g-dev libbz2-dev libssl-dev
				@echo
				@echo 'To build a nice collection of interesting Python versions:'
				@echo ' $$ for v in 2.{6{,.1,.2,.9},7{,.8,.10}}; do'
				@echo ' make -f Makefile.python symlink PYTHONVER=$$v \|\| break; done'
				@echo 'To run a Mercurial test on all these Python versions:'
				@echo ' $$ for py in `cd ~/bin && ls $(PYTHONNAME)2.*`; do'
				@echo ' echo $$py; $$py run-tests.py test-http.t; echo; done'
				@echo

				export LANGUAGE=C
				export LC_ALL=C

				python: $(PREFIX)/bin/python docutils
				printf 'import sys, zlib, bz2, docutils, ssl' \| $(PREFIX)/bin/python

				PYTHON_SRCDIR=Python-$(PYTHONVER)
				PYTHON_SRCFILE=$(PYTHON_SRCDIR).tgz

				$(PREFIX)/bin/python:
				[ -f $(PYTHON_SRCFILE) ] \|\| wget http://www.python.org/ftp/python/$(PYTHONVER)/$(PYTHON_SRCFILE) \|\| curl -OL http://www.python.org/ftp/python/$(PYTHONVER)/$(PYTHON_SRCFILE) \|\| [ -f $(PYTHON_SRCFILE) ]
				rm -rf $(PYTHON_SRCDIR)
				tar xf $(PYTHON_SRCFILE)
				# Debian/Ubuntu disables SSLv2,3 the hard way, disable it on old Pythons too
				-sed -i 's,self.*SSLv[23]_method(),0;//\0,g' $(PYTHON_SRCDIR)/Modules/_ssl.c
				# Find multiarch system libraries on Ubuntu and disable fortify error when setting argv
				LDFLAGS="-L/usr/lib/`dpkg-architecture -qDEB_HOST_MULTIARCH`"; \
				BASECFLAGS=-U_FORTIFY_SOURCE; \
				export LDFLAGS BASECFLAGS; \
				cd $(PYTHON_SRCDIR) && ./configure --prefix=$(PREFIX) && make all SVNVERSION=pwd && make install
				printf 'import sys, zlib, bz2, ssl' \| $(PREFIX)/bin/python
				rm -rf $(PYTHON_SRCDIR)

				DOCUTILSVER=0.12
				DOCUTILS_SRCDIR=docutils-$(DOCUTILSVER)
				DOCUTILS_SRCFILE=$(DOCUTILS_SRCDIR).tar.gz

				docutils: $(PREFIX)/bin/python
				@$(PREFIX)/bin/python -c 'import docutils' \|\| ( set -ex; \
				[ -f $(DOCUTILS_SRCFILE) ] \|\| wget http://downloads.sourceforge.net/project/docutils/docutils/$(DOCUTILSVER)/$(DOCUTILS_SRCFILE) \|\| [ -f $(DOCUTILS_SRCFILE) ]; \
				rm -rf $(DOCUTILS_SRCDIR); \
				tar xf $(DOCUTILS_SRCFILE); \
				cd $(DOCUTILS_SRCDIR) && $(PREFIX)/bin/python setup.py install --prefix=$(PREFIX); \
				$(PREFIX)/bin/python -c 'import docutils'; \
				rm -rf $(DOCUTILS_SRCDIR); )

				symlink: python $(SYMLINKDIR)
				ln -sf $(PREFIX)/bin/python $(SYMLINKDIR)/$(PYTHONNAME)$(PYTHONVER)

				.PHONY: help python docutils symlink