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Diffstat (limited to 'benchmark/io_copy_stream_write_socket.yml')
-rw-r--r-- | benchmark/io_copy_stream_write_socket.yml | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/benchmark/io_copy_stream_write_socket.yml b/benchmark/io_copy_stream_write_socket.yml new file mode 100644 index 0000000000..2207eca8c6 --- /dev/null +++ b/benchmark/io_copy_stream_write_socket.yml @@ -0,0 +1,39 @@ +prelude: | + # The goal of this is to use a synthetic (non-IO) reader + # to trigger the read/write loop of IO.copy_stream, + # bypassing in-kernel mechanisms like sendfile for zero copy, + # so we wrap the /dev/zero IO object: +benchmark: + io_copy_stream_write_socket: | + class Zero + def initialize + @n = 100000 + @in = File.open('/dev/zero', 'rb') + end + + def read(len, buf) + return if (@n -= 1) == 0 + @in.read(len, buf) + end + end + + begin + require 'socket' + src = Zero.new + rd, wr = UNIXSocket.pair + pid = fork do + wr.close + buf = String.new + while rd.read(16384, buf) + end + end + rd.close + IO.copy_stream(src, wr) + rescue Errno::ENOENT, NotImplementedError, NameError + # not *nix: missing /dev/zero, fork, or UNIXSocket + rescue LoadError # no socket? + ensure + wr.close if wr + Process.waitpid(pid) if pid + end if IO.respond_to?(:copy_stream) +loop_count: 1 |