・/mona/56MB/Z_BEST_COMPRESSION (gzip -9)
worked 669 sec.
converted 449 dat
I/O (read) = 26093 msec.
Conv (conv+write) = 29924 msec.
Arc (gzip) = 605896 msec.

・/mona/56MB/Z_DEFFAULT_COMPRESSION (gzip -6)
worked 203 sec.
converted 449 dat
I/O (read) = 29471 msec.
Conv (conv+write) = 29310 msec.
Arc (gzip) = 137814 msec.

・/event/10MB/Z_BEST_COMPRESSION (gzip -9)
worked 53 sec.
converted 397 dat
I/O (read) = 4597 msec.
Conv (conv+write) = 5768 msec.
Arc (gzip) = 38482 msec.

・/event/10MB/Z_DEFAULT_COMPRESSION (gzip -6)
worked 44 sec.
converted 397 dat
I/O (read) = 4051 msec.
Conv (conv+write) = 5788 msec.
Arc (gzip) = 29025 msec.