git: hammer - Collect record statistics, implement ^T and ^C
dillon at crater.dragonflybsd.org
Wed Aug 3 18:49:09 PDT 2011
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date: Wed Aug 3 18:42:38 2011 -0700
hammer - Collect record statistics, implement ^T and ^C
* Add a check for ^C
* Add a check for ^T and print statistics.
* When doing the dedup for real run a pre-pass on the b-tree to count the
number of data records present so the ^T feature can print out progress.
This also has the side effect of doing locality-of-reference disk
accesses to allow the b-tree data blocks to be cached by the kernel
(or swapcache) before doing the real pass which will insert random data
block reads when verifying duplicates. Due to the efficiencies both passes
should run faster than the original combined pass, or at least not take
too much longer.
Summary of changes:
sbin/hammer/cmd_dedup.c | 69 ++++++++++++++++++++++++++++++++++++++++++-----
1 files changed, 62 insertions(+), 7 deletions(-)
DragonFly BSD source repository
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