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| author | Ian Wienand <ianw@vmware.com> | 2011-09-09 20:19:35 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2011-09-09 20:19:35 +0200 |
| commit | c2a06db69de7562024524a89a7b0f0f7e61c5999 (patch) | |
| tree | fd38f4525062bc8b22e1dfe142e6f5fc6e3f5e42 | |
| parent | 880eec8f33843d00142d2639dfe7d807dc125cf9 (diff) | |
| download | busybox-c2a06db69de7562024524a89a7b0f0f7e61c5999.tar.gz | |
gzip: new GZIP_BIG_MEM option
Enabling the config option on my standard linux box and zipping a
random 250mb file:
small mem: 21.85user 0.44system 0:22.35elapsed
big mem: 13.45user 0.46system 0:13.94elapsed
Signed-off-by: Ian Wienand <ianw@vmware.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | archival/Config.src | 10 | ||||
| -rw-r--r-- | archival/gzip.c | 6 |
2 files changed, 15 insertions, 1 deletions
diff --git a/archival/Config.src b/archival/Config.src index 81788ecd9..9f4908178 100644 --- a/archival/Config.src +++ b/archival/Config.src @@ -187,6 +187,16 @@ config FEATURE_GZIP_LONG_OPTIONS help Enable use of long options, increases size by about 106 Bytes +config GZIP_BIG_MEM + bool "Trade memory for gzip speed" + default n + depends on GZIP + help + Enable big memory options for gzip, including larger I/O + buffers and bigger hash tables. Faster, but uses at least + twice as much memory. Select if speed is more important than + memory use. + config LZOP bool "lzop" default y diff --git a/archival/gzip.c b/archival/gzip.c index 403eb4dcb..0e0b68142 100644 --- a/archival/gzip.c +++ b/archival/gzip.c @@ -81,7 +81,11 @@ aa: 85.1% -- replaced with aa.gz /* =========================================================================== */ -#define SMALL_MEM +#if ENABLE_GZIP_BIG_MEM +# define BIG_MEM +#else +# define SMALL_MEM +#endif #ifndef INBUFSIZ # ifdef SMALL_MEM |