------------------
   no compression (copy with cp) (cache is cold; this warms cache for everything else)
207M   0m3.144s
   after cache warm:
207M   0m0.658s
------------------
    Note:  In all these tests, I watch "top" to ensure the benchmark is "fair."  No 
    processes are multithreading or using multiple cores.  The default for p7zip was
    to use multiple cores, but I gave it the switch to disable that.  The default
    for all others is ... unless you download specialized packages that are meant 
    for parallelization, you cannot parallelize.  You would need something like
    pbzip2, or pigz, or threadzip, in order to use the other algorithms parallelized.

    LZO is so light, even cat /dev/zero | lzop > /dev/null cannot make lzop consume
    100% of the cpu.  That's pretty amazing.  I thought maybe it was because it's all
    zeros, so I also tried (while true ; do cat somefile ; done) | lzop > /dev/null
    and the result was the same.  VERY light compression.
------------------
   LZO (lzop) compression level 1
77M   0m1.913s
------------------
   LZO (lzop) compression level 5
77M   0m1.913s
------------------
   LZO (lzop) compression level 9
77M   0m1.913s
------------------
   compress (ncompress, Lempel-Ziv)
81M    0m6.486s
------------------
   7-zip (p7zip, 7za) compression level 1
17M    0m13.995s
------------------
   7-zip (p7zip, 7za) compression level 3
17M    0m19.222s
------------------
   7-zip (p7zip, 7za) compression level 5
13M    1m53.736s
------------------
   7-zip (p7zip, 7za) compression level 7
9.1M   2m16.036s
------------------
   7-zip (p7zip, 7za) compression level 9
8.7M   2m19.534s
------------------
   zlib (gzip) compression level 1
42M    0m5.883s
------------------
   zlib (gzip) compression level 2
42M    0m5.643s
------------------
   zlib (gzip) compression level 3
42M    0m6.733s
------------------
   zlib (gzip) compression level 4
41M    0m7.293s
------------------
   zlib (gzip) compression level 5
41M    0m9.257s
------------------
   zlib (gzip) compression level 6
41M    0m14.189s
------------------
   zlib (gzip) compression level 7
41M    0m15.573s
------------------
   zlib (gzip) compression level 8
42M    0m21.628s
------------------
   zlib (gzip) compression level 9
42M    0m28.298s
------------------
   bzip2 compression level 1
29M    0m34.042s
------------------
   bzip2 compression level 2
30M    0m34.244s
------------------
   bzip2 compression level 3
30M    0m34.588s
------------------
   bzip2 compression level 4
31M    0m34.724s
------------------
   bzip2 compression level 5
31M    0m34.254s
------------------
   bzip2 compression level 6
31M    0m36.000s
------------------
   bzip2 compression level 7
31M    0m36.798s
------------------
   bzip2 compression level 8
31M    0m39.771s
------------------
   bzip2 compression level 9
32M    0m39.351s