Linux/Compression tools: Difference between revisions

Revision as of 11:38, 18 November 2012

benchmark

Compressing 6144MB kvm image

Command	Arguments	compressed size [MB]	time [s]
pigz	--best	1526	259.65
pigz	--fast	1667	28.06
cat	> target	6144	55.96
copy		6144	59.36

benchmark script

#!/bin/bash
COMPRESSCMD="pigz -9"
DESC="pigz-best"

START=$(date +%s.%N)
cat image.img | $COMPRESSCMD > /backup/$DESC.img.gz
END=$(date +%s.%N)
DIFF=$(echo "$END - $START" | bc)
echo "$DIFF" > /backup/$DESC.log

@@ Line 8: / Line 8: @@
 ! compressed size [MB]
 ! time [s]
-|-
-| cat
-| > target
-| 6144
-| 55.96
 |-
 | pigz
@@ Line 23: / Line 18: @@
 | 1667
 | 28.06
+|-
+| cat
+| > target
+| 6144
+| 55.96
+|-
+| copy
+|
+| 6144
+| 59.36
+|-
+|
+|
+|
+|
 |}