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https://github.com/vgough/encfs.git
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tests: Add benchmark.pl - benchmark EncFS against eCryptfs
Example Results
* Seagate Barracuda 7200.9, model ST3250824AS
* Linux 3.16.3
* EncFS 1c5c75c44f
Test | EncFS | eCryptfs | EncFS advantage
----------------|--------------|--------------|----------------
stream_write | 32 MiB/s | 38 MiB/s | 0.84
extract | 28744 ms | 30027 ms | 1.04
du | 495 MB | 784 MB | 1.58
rsync | 3319 ms | 62486 ms | 18.83
delete | 6462 ms | 74652 ms | 11.55
(eCryptfs is very slow for stat() on a classical HDD)
This commit is contained in:
Jakob Unterwurzacher
parent
1c5c75c44f
commit
9feb263dea
194
tests/benchmark.pl
Executable file
194
tests/benchmark.pl
Executable file
@ -0,0 +1,194 @@
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#!/usr/bin/perl
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# Benchmark EncFS against eCryptfs
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use Time::HiRes qw( time );
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use File::Temp;
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use warnings;
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require("tests/common.pl");
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# Download linux-3.0.tar.gz unless it already exists ("-c" flag)
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sub dl {
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our $linuxgz = "/tmp/linux-3.0.tar.gz";
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print "# downloading linux-3.0.tar.gz... ";
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system("wget -nv -c https://www.kernel.org/pub/linux/kernel/v3.x/linux-3.0.tar.gz -O $linuxgz");
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print "done\n";
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}
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# Create a new empty working directory
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sub newWorkingDir {
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my $prefix = shift;
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my $workingDir = mkdtemp("$prefix/encfs-performance-XXXX")
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|| die("Could not create temporary directory");
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return $workingDir;
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}
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sub cleanup {
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print "cleaning up...";
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my $workingDir = shift;
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system("umount $workingDir/ecryptfs_plaintext");
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system("fusermount -u $workingDir/encfs_plaintext");
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system("rm -Rf $workingDir");
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print "done\n";
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}
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sub mount_encfs {
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my $workingDir = shift;
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my $c = "$workingDir/encfs_ciphertext";
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my $p = "$workingDir/encfs_plaintext";
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mkdir($c);
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mkdir($p);
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delete $ENV{"ENCFS6_CONFIG"};
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system("./encfs/encfs --extpass=\"echo test\" --standard $c $p > /dev/null");
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waitForFile("$c/.encfs6.xml") or die("Control file not created");
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print "# encfs mounted on $p\n";
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return $p;
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}
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sub mount_ecryptfs {
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my $workingDir = shift;
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my $c = "$workingDir/ecryptfs_ciphertext";
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my $p = "$workingDir/ecryptfs_plaintext";
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mkdir($c);
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mkdir($p);
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system("expect -c \"spawn mount -t ecryptfs $c $p\" ./tests/mount-ecryptfs.expect > /dev/null") == 0
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or die("ecryptfs mount failed - are you root?");
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print "# ecryptfs mounted on $p\n";
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return $p;
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}
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# Returns integer $milliseconds from float $seconds
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sub ms {
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my $seconds = shift;
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my $milliseconds = int( $seconds * 1000 );
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return $milliseconds;
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}
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sub benchmark {
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my $dir = shift;
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my $start;
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our $linuxgz;
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my $delta;
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my $line;
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my @results = ();
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system("sync");
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print("# stream_write... ");
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$start = time();
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writeZeroes( "$dir/zero", 1024 * 1024 * 100 );
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system("sync");
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$delta = time() - $start;
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push( @results, [ 'stream_write', int( 100 / $delta ), "MiB/s" ] );
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printf("done\n");
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unlink("$dir/zero");
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system("sync");
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system("cat $linuxgz > /dev/null");
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print("# extract... ");
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$start = time();
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system("tar xzf $linuxgz -C $dir");
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system("sync");
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$delta = ms( time() - $start );
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push( @results, [ 'extract', $delta, "ms" ] );
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print("done\n");
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$du = qx(du -sm $dir | cut -f1);
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push( @results, [ 'du', $du, 'MB' ] );
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printf( "# disk space used: %d MB\n", $du );
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system("echo 3 > /proc/sys/vm/drop_caches");
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$start = time();
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system("rsync -an $dir /tmp");
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$delta = time() - $start;
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push( @results, [ 'rsync', ms($delta), 'ms' ] );
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printf( "# rsync took %d ms\n", ms($delta) );
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system("echo 3 > /proc/sys/vm/drop_caches");
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system("sync");
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$start = time();
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system("rm -Rf $dir/*");
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system("sync");
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$delta = time() - $start;
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push( @results, [ 'delete', ms($delta), 'ms' ] );
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printf( "# delete took %d ms\n", ms($delta) );
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return \@results;
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}
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sub tabulate {
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my $r;
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$r = shift;
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my @encfs = @{$r};
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$r = shift;
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my @ecryptfs = @{$r};
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print "Test | EncFS | eCryptfs | EncFS advantage\n";
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print "----------------|--------------|--------------|----------------\n";
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for ( my $i = 0 ; $i <= $#encfs ; $i++ ) {
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my $test = $encfs[$i][0];
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my $unit = $encfs[$i][2];
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my $en = $encfs[$i][1];
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my $ec = $ecryptfs[$i][1];
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my $ratio = $ec / $en;
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if ( $unit =~ m!/s! ) {
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$ratio = $en / $ec;
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}
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printf( "%-15s | %6d %-5s | %6d %-5s | %2.2f\n",
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$test, $en, $unit, $ec, $unit, $ratio );
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}
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}
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sub main {
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if ( $#ARGV < 0 ) {
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print "Usage: test/benchmark.pl MOUNTPOINT [MOUNTPOINT] [...]\n";
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exit(1);
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}
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if ( $> != 0 ) {
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print("This test must be run as root!\n");
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exit(2);
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}
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dl();
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my $workingDir;
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my $mountpoint;
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my $prefix;
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while ( $prefix = shift(@ARGV) ) {
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$workingDir = newWorkingDir($prefix);
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print "# mounting encfs\n";
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$mountpoint = mount_encfs($workingDir);
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my $encfs_results = benchmark($mountpoint);
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print "# mounting ecryptfs\n";
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$mountpoint = mount_ecryptfs($workingDir);
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my $ecryptfs_results = benchmark($mountpoint);
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cleanup($workingDir);
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print "\nResults for $prefix\n";
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print "==============================\n\n";
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tabulate( $encfs_results, $ecryptfs_results );
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print "\n";
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}
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}
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main();
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22
tests/mount-ecryptfs.expect
Normal file
22
tests/mount-ecryptfs.expect
Normal file
@ -0,0 +1,22 @@
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#!/bin/expect -f
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# Passed by controlling process via "-c"
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#spawn mount -t ecryptfs ecryptfs_ciphertext ecryptfs_plaintext
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expect "Selection: "
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send "1\n"
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expect "Passphrase: "
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send "test\n"
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expect "Selection \\\[aes\\\]: "
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send "aes\n"
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expect "Selection \\\[16\\\]: "
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send "16\n"
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expect "Enable plaintext passthrough (y/n) \\\[n\\\]: "
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send "n\n"
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expect "Enable filename encryption (y/n) \\\[n\\\]: "
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send "y\n"
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# Filename Encryption Key (FNEK) Signature [d395309aaad4de06]:
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expect "\\\]: "
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send "\n"
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expect "Mounted eCryptfs"
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send_user "\n"
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