normal e1dd1fc35c open-uri: clear string after buffering ... Since r58846 (in Ruby 2.5), it is safe to clear the string yielded to Net::HTTPResponse#read_body methods. This reduces malloc garbage (anonymous RSS) using the Linux-only script below: before: user system total real 0.030000 0.250000 0.280000 ( 0.280511) RssAnon: 60240 kB after: user system total real 0.050000 0.223333 0.273333 ( 0.273118) RssAnon: 6676 kB ------ # warning this script requires 1G free space for buffering require 'open-uri' require 'socket' require 'benchmark' s = TCPServer.new('127.0.0.1', 0) len = 1024 * 1024 * 1024 buf = ((0..255).map(&:chr).join * 128) nr = len / buf.size pid = fork do c = s.accept c.readpartial(16384).clear c.write("HTTP/1.1 200 OK\r\n" \ "Content-Length: #{len}\r\n" \ "Content-Type: application/octet-stream\r\n" \ "\r\n") buf.freeze # speeds up IO#write slightly nr.times { c.write(buf) } c.close end addr = s.addr open("http://#{addr[3]}:#{addr[1]}/", "rb") do |fp| bm = Benchmark.measure do while fp.read(16384, buf) end end puts bm end puts File.readlines("/proc/#$$/status").grep(/RssAnon/)[0] Process.waitpid2(pid) ------ * lib/open-uri.rb: clear string yielded by Net::HTTPResponse#read_body [ruby-core:84662] [Feature #14320] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61664 b2dd03c8-39d4-4d8f-98ff-823fe69b080e		2018-01-08 01:11:33 +00:00
..
cgi	Use printf instead of puts and sprintf	2017-12-12 15:01:04 +00:00
drb	drb: use \A and \z	2017-12-30 12:10:43 +00:00
forwardable
irb	proc.c (bind_location): Add Binding#source_location	2017-12-26 08:38:35 +00:00
matrix
net	net/protocol: read directly into rbuf if it's empty	2018-01-08 00:34:47 +00:00
optparse
racc
rdoc	fix reset order.	2017-12-31 00:06:34 +00:00
rexml	Add uplevel keyword to Kernel#warn and use it	2017-12-12 11:56:25 +00:00
rinda
rss	Add uplevel keyword to Kernel#warn and use it	2017-12-12 11:56:25 +00:00
rubygems	fix leaked fds	2017-12-25 05:54:27 +00:00
shell
unicode_normalize
uri	Use string instead of regexp	2017-12-14 06:30:22 +00:00
webrick	webrick 1.4.2	2017-12-24 08:38:43 +00:00
yaml
.document	Ignore gemspec under the lib directory for documentation.	2017-12-12 08:34:13 +00:00
abbrev.rb
base64.rb
benchmark.rb
cgi.rb
cmath.gemspec	Bump version to cmath-1.0.0 as default gems.	2017-12-11 03:27:47 +00:00
cmath.rb	Add uplevel keyword to Kernel#warn and use it	2017-12-12 11:56:25 +00:00
csv.gemspec	Bump version to csv-1.0.0 as default gems.	2017-12-13 05:24:01 +00:00
csv.rb
debug.rb
delegate.rb	Add uplevel keyword to Kernel#warn and use it	2017-12-12 11:56:25 +00:00
drb.rb
e2mmap.rb
English.rb
erb.rb	$SAFE as a process global state. [Feature #14250]	2017-12-28 20:09:24 +00:00
fileutils.gemspec	Bump up fileutils-1.0.2	2017-12-22 08:00:10 +00:00
fileutils.rb	Bump up fileutils-1.0.2	2017-12-22 08:00:10 +00:00
find.rb
forwardable.rb	Add uplevel keyword to Kernel#warn and use it	2017-12-12 11:56:25 +00:00
getoptlong.rb
ipaddr.gemspec
ipaddr.rb	Add uplevel keyword to Kernel#warn and use it	2017-12-12 11:56:25 +00:00
irb.rb	irb.rb: fix highlight	2017-12-25 07:55:25 +00:00
logger.rb	* lib/logger.rb (Logger::LogDevice#open_logfile, #create_logfile):	2017-12-21 05:07:43 +00:00
matrix.rb	Add uplevel keyword to Kernel#warn and use it	2017-12-12 11:56:25 +00:00
mkmf.rb	int (*)(void) is incompatible with void*	2018-01-02 06:41:42 +00:00
monitor.rb
mutex_m.rb
observer.rb
open-uri.rb	open-uri: clear string after buffering	2018-01-08 01:11:33 +00:00
open3.rb
optionparser.rb
optparse.rb
ostruct.rb	Add uplevel keyword to Kernel#warn and use it	2017-12-12 11:56:25 +00:00
pp.rb	Requiring pp is not required now [ci skip]	2017-12-18 01:51:53 +00:00
prettyprint.rb
prime.rb
profile.rb
profiler.rb
pstore.rb
rdoc.rb	Merge rdoc-6.0.1.	2017-12-23 23:33:09 +00:00
resolv-replace.rb
resolv.rb	Fixed command Injection	2017-12-20 04:25:01 +00:00
rss.rb
rubygems.rb	Postponing the Bundler merge.	2017-12-22 23:08:05 +00:00
scanf.gemspec	Bump version to scanf-1.0.0 as default gems.	2017-12-11 08:18:01 +00:00
scanf.rb	lib/scanf.rb: [DOC] fix typos	2018-01-07 17:49:46 +00:00
securerandom.rb
set.rb
shell.rb
shellwords.rb
singleton.rb
sync.rb
tempfile.rb	Add uplevel keyword to Kernel#warn and use it	2017-12-12 11:56:25 +00:00
thwait.rb
time.rb
timeout.rb	Add uplevel keyword to Kernel#warn and use it	2017-12-12 11:56:25 +00:00
tmpdir.rb
tracer.rb
tsort.rb
un.rb
uri.rb
weakref.rb
webrick.rb
yaml.rb	Add uplevel keyword to Kernel#warn and use it	2017-12-12 11:56:25 +00:00