##// END OF EJS Templates
changegroup: increase write buffer size to 128k...
changegroup: increase write buffer size to 128k By default, Python defers to the operating system for choosing the default buffer size on opened files. On my Linux machine, the default is 4k, which is really small for 2016. This patch bumps the write buffer size when writing changegroups/bundles to 128k. This matches the 128k read buffer we already use on revlogs. It's worth noting that this only impacts when writing to an explicit file (such as during `hg bundle`). Buffers when writing to bundle files via the repo vfs or to a temporary file are not impacted. When producing a none-v2 bundle file of the mozilla-unified repository, this change caused the number of write() system calls to drop from 952,449 to 29,788. After this change, the most frequent system calls are fstat(), read(), lseek(), and open(). There were 2,523,672 system calls after this patch (so a net decrease of ~950k is statistically significant). This change shows no performance change on my system. But I have a high-end system with a fast SSD. It is quite possible this change will have a significant impact on network file systems, where extra network round trips due to excessive I/O system calls could introduce significant latency.

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__init__.py
125 lines | 3.6 KiB | text/x-python | PythonLexer
# hgweb/__init__.py - web interface to a mercurial repository
#
# Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
# Copyright 2005 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import
import os
from ..i18n import _
from .. import (
error,
util,
)
from . import (
hgweb_mod,
hgwebdir_mod,
server,
)
def hgweb(config, name=None, baseui=None):
'''create an hgweb wsgi object
config can be one of:
- repo object (single repo view)
- path to repo (single repo view)
- path to config file (multi-repo view)
- dict of virtual:real pairs (multi-repo view)
- list of virtual:real tuples (multi-repo view)
'''
if ((isinstance(config, str) and not os.path.isdir(config)) or
isinstance(config, dict) or isinstance(config, list)):
# create a multi-dir interface
return hgwebdir_mod.hgwebdir(config, baseui=baseui)
return hgweb_mod.hgweb(config, name=name, baseui=baseui)
def hgwebdir(config, baseui=None):
return hgwebdir_mod.hgwebdir(config, baseui=baseui)
class httpservice(object):
def __init__(self, ui, app, opts):
self.ui = ui
self.app = app
self.opts = opts
def init(self):
util.setsignalhandler()
self.httpd = server.create_server(self.ui, self.app)
if self.opts['port'] and not self.ui.verbose:
return
if self.httpd.prefix:
prefix = self.httpd.prefix.strip('/') + '/'
else:
prefix = ''
port = ':%d' % self.httpd.port
if port == ':80':
port = ''
bindaddr = self.httpd.addr
if bindaddr == '0.0.0.0':
bindaddr = '*'
elif ':' in bindaddr: # IPv6
bindaddr = '[%s]' % bindaddr
fqaddr = self.httpd.fqaddr
if ':' in fqaddr:
fqaddr = '[%s]' % fqaddr
if self.opts['port']:
write = self.ui.status
else:
write = self.ui.write
write(_('listening at http://%s%s/%s (bound to %s:%d)\n') %
(fqaddr, port, prefix, bindaddr, self.httpd.port))
self.ui.flush() # avoid buffering of status message
def run(self):
self.httpd.serve_forever()
def createservice(ui, repo, opts):
# this way we can check if something was given in the command-line
if opts.get('port'):
opts['port'] = util.getport(opts.get('port'))
alluis = set([ui])
if repo:
baseui = repo.baseui
alluis.update([repo.baseui, repo.ui])
else:
baseui = ui
webconf = opts.get('web_conf') or opts.get('webdir_conf')
if webconf:
# load server settings (e.g. web.port) to "copied" ui, which allows
# hgwebdir to reload webconf cleanly
servui = ui.copy()
servui.readconfig(webconf, sections=['web'])
alluis.add(servui)
else:
servui = ui
optlist = ("name templates style address port prefix ipv6"
" accesslog errorlog certificate encoding")
for o in optlist.split():
val = opts.get(o, '')
if val in (None, ''): # should check against default options instead
continue
for u in alluis:
u.setconfig("web", o, val, 'serve')
if webconf:
app = hgwebdir_mod.hgwebdir(webconf, baseui=baseui)
else:
if not repo:
raise error.RepoError(_("there is no Mercurial repository"
" here (.hg not found)"))
app = hgweb_mod.hgweb(repo, baseui=baseui)
return httpservice(servui, app, opts)