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Optimized compression to disable headers/crc when the source and destination are both uncompressed.

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Set different compression levels based on usage.
This commit is contained in:
David Steele 2015-03-01 23:41:01 -05:00
parent 0df1b7c473
commit d874e122aa
2 changed files with 8 additions and 5 deletions
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6
lib/BackRest/File.pm
View File

@ -1610,13 +1610,13 @@ sub copy
if (!$bSourceCompressed && $bDestinationCompress)
{
($strChecksum, $iFileSize) =
$self->{oRemote}->binary_xfer($hSourceFile, $hDestinationFile, 'out', false, undef, false);
$self->{oRemote}->binary_xfer($hSourceFile, $hDestinationFile, 'out', false, true, false);
}
# If the source is compressed and the destination is not then decompress
elsif ($bSourceCompressed && !$bDestinationCompress)
{
($strChecksum, $iFileSize) =
$self->{oRemote}->binary_xfer($hSourceFile, $hDestinationFile, 'in', undef, false, false);
$self->{oRemote}->binary_xfer($hSourceFile, $hDestinationFile, 'in', true, false, false);
}
# Else both side are compressed, so copy capturing checksum
elsif ($bSourceCompressed)
@ -1627,7 +1627,7 @@ sub copy
else
{
($strChecksum, $iFileSize) =
$self->{oRemote}->binary_xfer($hSourceFile, $hDestinationFile, 'in', undef, true, false);
$self->{oRemote}->binary_xfer($hSourceFile, $hDestinationFile, 'in', false, true, false);
}
}

7
lib/BackRest/Remote.pm
View File

@ -567,7 +567,8 @@ sub binary_xfer
# Initialize inflate object and check for errors
my ($oZLib, $iZLibStatus) =
new Compress::Raw::Zlib::Inflate(WindowBits => WANT_GZIP, Bufsize => $self->{iBlockSize}, LimitOutput => 1);
new Compress::Raw::Zlib::Inflate(WindowBits => !$bSourceCompressed ? 15 : WANT_GZIP,
Bufsize => $self->{iBlockSize}, LimitOutput => 1);
if ($iZLibStatus != Z_OK)
{
@ -705,7 +706,9 @@ sub binary_xfer
# Initialize inflate object and check for errors
my ($oZLib, $iZLibStatus) =
new Compress::Raw::Zlib::Deflate(WindowBits => WANT_GZIP, Bufsize => $self->{iBlockSize}, AppendOutput => 1);
new Compress::Raw::Zlib::Deflate(WindowBits => !$bDestinationCompress ? 15 : WANT_GZIP,
Level => !$bSourceCompressed ? Z_BEST_SPEED : Z_DEFAULT_COMPRESSION,
Bufsize => $self->{iBlockSize}, AppendOutput => 1);
if ($iZLibStatus != Z_OK)
{