From 13337de269b207136e2462c3f1f7fbd842522a7c Mon Sep 17 00:00:00 2001
From: Guilhem Moulin <guilhem@fripost.org>
Date: Tue, 19 Nov 2019 20:20:41 +0100
Subject: Add benchmark metrics, with timings and network + memory usage.

Along with a comparison with OfflineIMAP.
---
 benchmark/random_maildir.pl | 57 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100755 benchmark/random_maildir.pl

(limited to 'benchmark/random_maildir.pl')

diff --git a/benchmark/random_maildir.pl b/benchmark/random_maildir.pl
new file mode 100755
index 0000000..363eb41
--- /dev/null
+++ b/benchmark/random_maildir.pl
@@ -0,0 +1,57 @@
+#!/usr/bin/perl
+
+#----------------------------------------------------------------------
+# Generate a random mbox
+# Copyright © 2019 Guilhem Moulin <guilhem@fripost.org>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#----------------------------------------------------------------------
+
+use warnings;
+use strict;
+
+use Time::HiRes ();
+use POSIX qw{strftime setlocale};
+use Crypt::URandom "urandom";
+
+setlocale(POSIX::LC_TIME, "C");
+
+foreach (qw/cur new tmp/) {
+    my $d = $ARGV[0] ."/". $_;
+    mkdir $d, 0700 or die "mkdir: $!"
+}
+
+my $NEW = $ARGV[0] ."/new";
+for (my $i = 0; $i < $ARGV[1]; $i++) {
+    my $timestamp = Time::HiRes::gettimeofday();
+    my $filename = sprintf("%10d.M%010d.localhost", $timestamp, $i);
+    open my $out, ">", $NEW ."/". $filename or die "open: $!";
+
+    my $message_id = sprintf "%.10f\@example.net", $timestamp;
+    my $sender = unpack("H*", urandom(8))."\@example.net";
+    print $out
+          "From: <$sender>\r\n"
+        . "To: <recipient\@example.net> \r\n"
+        . "Subject: Hello world! \r\n"
+        . "Date: ". strftime("%a, %e %b %Y %H:%M:%S %z", localtime($timestamp)). "\r\n"
+        . "Message-ID: ". sprintf("<%.10f\@example.net>", $timestamp)."\r\n"
+        . "\r\n";
+
+    my $len = 1 + int(rand(4095));
+    my $body = unpack("H*", urandom($len));
+    for (my $i = 0; $i < 2*$len; $i += 70) {
+        print $out substr($body, $i, 70), "\r\n";
+    }
+    close($out);
+}
-- 
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