Thu, 17 Dec 2015 23:53:09 +0900 osutil: implement pure version of recvfds() for PyPy
Yuya Nishihara <yuya@tcha.org> [Thu, 17 Dec 2015 23:53:09 +0900] rev 27474
osutil: implement pure version of recvfds() for PyPy This is less portable than the C version, but PyPy can't load CPython extensions. So for now, this will be used on PyPy. I've tested it on Linux amd64 and Mac OS X.
Thu, 17 Dec 2015 23:41:46 +0900 osutil: implement recvmsg() of SCM_RIGHTS for chg command server
Yuya Nishihara <yuya@tcha.org> [Thu, 17 Dec 2015 23:41:46 +0900] rev 27473
osutil: implement recvmsg() of SCM_RIGHTS for chg command server It will be used to attach client's stdio files to a background chg command server. The socket module of Python 2.x doesn't provide recvmsg(). This could be implemented by using ctypes, but it would be less portable than the C version because the handling of socket ancillary data heavily depends on preprocessor. Also, some length fields are wrongly typed in the Linux kernel.
Mon, 21 Dec 2015 14:52:18 -0600 cleanup: back out performance hacks amended into previous commit
Matt Mackall <mpm@selenic.com> [Mon, 21 Dec 2015 14:52:18 -0600] rev 27472
cleanup: back out performance hacks amended into previous commit
Fri, 18 Dec 2015 06:33:48 +0000 commands: consistently indent notes 3 spaces
timeless <timeless@mozdev.org> [Fri, 18 Dec 2015 06:33:48 +0000] rev 27471
commands: consistently indent notes 3 spaces most notes have 3 spaces for indentation, these had 2...
Sun, 20 Dec 2015 18:38:21 -0800 perf: add perfrevlogrevision
Gregory Szorc <gregory.szorc@gmail.com> [Sun, 20 Dec 2015 18:38:21 -0800] rev 27470
perf: add perfrevlogrevision As part of investigating performance improvements to revlog reading, I needed a mechanism to measure every part of revlog reading so I knew where time was spent and how effective optimizations were. This patch implements a perf command for benchmarking the various stages of reading a single revlog revision. When executed against a manifest revision at the end of a 30,000+ long delta chain in mozilla-central, the command demonstrates that ~80% of time is spent in zlib decompression.
Sun, 20 Dec 2015 19:02:02 -0800 commands: use revlog._deltachain in debugdeltachain
Gregory Szorc <gregory.szorc@gmail.com> [Sun, 20 Dec 2015 19:02:02 -0800] rev 27469
commands: use revlog._deltachain in debugdeltachain We have a nice API now. Use it. This does mean we introduce an extra index lookup for each revision. Considering this is a debug command, the overhead should be acceptable. We could add the chain size to revlog._deltachain(). However, that feels like avoidable overhead.
Sun, 20 Dec 2015 18:56:05 -0800 revlog: refactor delta chain computation into own function
Gregory Szorc <gregory.szorc@gmail.com> [Sun, 20 Dec 2015 18:56:05 -0800] rev 27468
revlog: refactor delta chain computation into own function This code is already written in multiple locations. While this code needs to be fast and extracting it to its own function adds overhead, code paths reading delta chains typically read, decompress, and do binary patching on revlog data from the delta chain. This other work (especially zlib decompression) almost certainly accounts for a lot more time than the overhead of introducing a Python function call. So I'm not worried about the performance impact of this change.
Sun, 20 Dec 2015 17:57:44 -0800 perf: call clearcaches() in perfmanifest
Gregory Szorc <gregory.szorc@gmail.com> [Sun, 20 Dec 2015 17:57:44 -0800] rev 27467
perf: call clearcaches() in perfmanifest The old code only partially cleared the caches. Now that we have a comprehensive method for wiping all caches, let's call it. This appears to introduce a marginal regression in `hg perfmanifest` on mozilla-central. This is good because the new result is more accurate since caches aren't being used.
Sun, 20 Dec 2015 19:31:46 -0800 manifest: implement clearcaches()
Gregory Szorc <gregory.szorc@gmail.com> [Sun, 20 Dec 2015 19:31:46 -0800] rev 27466
manifest: implement clearcaches() The manifest implements its own caches in addition to revlog's. Extend the base clearcaches() to wipe these as well.
Sun, 20 Dec 2015 17:48:20 -0800 revlog: make clearcaches() more effective
Gregory Szorc <gregory.szorc@gmail.com> [Sun, 20 Dec 2015 17:48:20 -0800] rev 27465
revlog: make clearcaches() more effective clearcaches() was added several years ago in e8d37b78acfb as part of implementing a perf command. Since revlog instances have many caches and since the spirit of this mostly unused method is to facilitate performance testing, I think it's appropriate for all the revlog's caches to get cleared when it is called.
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