mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
23 lines
394 B
Ruby
23 lines
394 B
Ruby
|
# IO.select performance. worst case of single fd.
|
||
|
|
|
||
|
|
ios = []
|
||
|
|
nr = 1000000
|
||
|
|
if defined?(Process::RLIMIT_NOFILE)
|
||
|
|
max = Process.getrlimit(Process::RLIMIT_NOFILE)[0]
|
||
|
|
else
|
||
|
|
max = 64
|
||
|
|
end
|
||
|
|
puts "max fd: #{max} (results not apparent with <= 1024 max fd)"
|
||
|
|
|
||
|
|
((max / 2) - 10).times do
|
||
|
|
ios.concat IO.pipe
|
||
|
|
end
|
||
|
|
|
||
|
|
last = [ ios[-1] ]
|
||
|
|
puts "last IO: #{last[0].inspect}"
|
||
|
|
|
||
|
|
nr.times do
|
||
|
|
IO.select nil, last
|
||
|
|
end
|
||
|
|
|