This patch series add snappy compression support, applied on top of v1.4.4. snappy is fast compressoin algorhythm like lzo, but it's more optimized than lzo on x86 machines and some others. A lot of benchmark is available on the web. Here I only point at my benchmark I posted a few weeks ago, - http://lists.infradead.org/pipermail/kexec/2012-June/006425.html where snappy shows mostly as good performance as simple copying on the worst case that input data increases its data size during compression; this means we can use snappy with mostly NO risk. How to get snappy libraries: 1) Use yum framework to get snappy and snappy-devel packages, or 2) Visit official website: http://code.google.com/p/snappy/, download snappy-<version>.tar.gz and then build it. How to build makedumpfile with snappy support: Do make as follows: $ make USESNAPPY=on --- HATAYAMA Daisuke (8): Add manual description Add help message Add uncompression processing Add compression processing Notify snappy unsupporting when disabled Add snappy build support Add command-line processing for snappy Add dump header for snappy Makefile | 5 +++++ diskdump_mod.h | 2 ++ makedumpfile.8 | 9 +++++--- makedumpfile.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++------ makedumpfile.h | 3 +++ print_info.c | 16 ++++++++++----- 6 files changed, 80 insertions(+), 15 deletions(-) -- Thanks. HATAYAMA, Daisuke
