Compare file compression methods by sending to /dev/null
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I'd like to compare the time to completion for compression algorithms and parameters. I'm confident that the inputs will be set up properly. In order to save space and avoid some variability my thought is to just send output to /dev/null. What are downsides in this situation?
compression null
asked Mar 11 at 19:13
Aaron ThomasAaron Thomas
1244
add a comment |
0
I'd like to compare the time to completion for compression algorithms and parameters. I'm confident that the inputs will be set up properly. In order to save space and avoid some variability my thought is to just send output to /dev/null. What are downsides in this situation?
compression null
asked Mar 11 at 19:13
Aaron ThomasAaron Thomas
1244
1
then yes just usetime comand > /dev/nullif results are just time based. like ` time tar cvf /dev/null Pictures/png/` here goes : ` Pictures/png/rcrrcrncrcnz.png real 0m0.011s user 0m0.000s sys 0m0.004s`
– francois P
Mar 11 at 19:15
2
The downside is that you can't time the uncompression speeds.
– Kusalananda♦
Mar 11 at 19:30
Another downside is that you will not get the size (compression ratio) unless you pipe the output via something that will show the size, for exampledd(which will also show the time used).
– sudodus
Mar 11 at 19:53
add a comment |
0
0
0
I'd like to compare the time to completion for compression algorithms and parameters. I'm confident that the inputs will be set up properly. In order to save space and avoid some variability my thought is to just send output to /dev/null. What are downsides in this situation?
compression null
asked Mar 11 at 19:13
Aaron ThomasAaron Thomas
1244
I'd like to compare the time to completion for compression algorithms and parameters. I'm confident that the inputs will be set up properly. In order to save space and avoid some variability my thought is to just send output to /dev/null. What are downsides in this situation?
compression null
compression null
asked Mar 11 at 19:13
Aaron ThomasAaron Thomas
1244
asked Mar 11 at 19:13
Aaron ThomasAaron Thomas
1244
asked Mar 11 at 19:13
Aaron ThomasAaron Thomas
1244
asked Mar 11 at 19:13
Aaron ThomasAaron Thomas
1244
asked Mar 11 at 19:13
Aaron ThomasAaron Thomas
1244
1244
1
then yes just usetime comand > /dev/nullif results are just time based. like ` time tar cvf /dev/null Pictures/png/` here goes : ` Pictures/png/rcrrcrncrcnz.png real 0m0.011s user 0m0.000s sys 0m0.004s`
– francois P
Mar 11 at 19:15
2
The downside is that you can't time the uncompression speeds.
– Kusalananda♦
Mar 11 at 19:30
Another downside is that you will not get the size (compression ratio) unless you pipe the output via something that will show the size, for exampledd(which will also show the time used).
– sudodus
Mar 11 at 19:53
add a comment |
1
then yes just usetime comand > /dev/nullif results are just time based. like ` time tar cvf /dev/null Pictures/png/` here goes : ` Pictures/png/rcrrcrncrcnz.png real 0m0.011s user 0m0.000s sys 0m0.004s`
– francois P
Mar 11 at 19:15
2
The downside is that you can't time the uncompression speeds.
– Kusalananda♦
Mar 11 at 19:30
Another downside is that you will not get the size (compression ratio) unless you pipe the output via something that will show the size, for exampledd(which will also show the time used).
– sudodus
Mar 11 at 19:53
1
1
then yes just use
time comand > /dev/null if results are just time based. like ` time tar cvf /dev/null Pictures/png/` here goes : ` Pictures/png/rcrrcrncrcnz.png real 0m0.011s user 0m0.000s sys 0m0.004s`– francois P
Mar 11 at 19:15
then yes just use
time comand > /dev/null if results are just time based. like ` time tar cvf /dev/null Pictures/png/` here goes : ` Pictures/png/rcrrcrncrcnz.png real 0m0.011s user 0m0.000s sys 0m0.004s`– francois P
Mar 11 at 19:15
2
2
The downside is that you can't time the uncompression speeds.
– Kusalananda♦
Mar 11 at 19:30
The downside is that you can't time the uncompression speeds.
– Kusalananda♦
Mar 11 at 19:30
Another downside is that you will not get the size (compression ratio) unless you pipe the output via something that will show the size, for example
dd (which will also show the time used).– sudodus
Mar 11 at 19:53
Another downside is that you will not get the size (compression ratio) unless you pipe the output via something that will show the size, for example
dd (which will also show the time used).– sudodus
Mar 11 at 19:53
add a comment |
0
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1
then yes just use
time comand > /dev/nullif results are just time based. like ` time tar cvf /dev/null Pictures/png/` here goes : ` Pictures/png/rcrrcrncrcnz.png real 0m0.011s user 0m0.000s sys 0m0.004s`– francois P
Mar 11 at 19:15
2
The downside is that you can't time the uncompression speeds.
– Kusalananda♦
Mar 11 at 19:30
Another downside is that you will not get the size (compression ratio) unless you pipe the output via something that will show the size, for example
dd(which will also show the time used).– sudodus
Mar 11 at 19:53