c88d16baaf
cbfs-compression-tool provides a way to benchmark the compression
algorithms as used by cbfstool (and coreboot) and allows to
pre-compress data for later consumption by cbfstool (once it supports
the format).
For an impression, the benchmark's results on my machine:
measuring 'none'
compressing 10485760 bytes to 10485760 took 0 seconds
measuring 'LZMA'
compressing 10485760 bytes to 1736 took 2 seconds
measuring 'LZ4'
compressing 10485760 bytes to 41880 took 0 seconds
And a possible use for external compression, parallel and non-parallel
(60MB in 53 files compressed to 650KB on a machine with 40 threads):
$ time (ls -1 *.* |xargs -n 1 -P $(nproc) -I '{}' cbfs-compression-tool compress '{}' out/'{}' LZMA)
real 0m0.786s
user 0m11.440s
sys 0m0.044s
$ time (ls -1 *.* |xargs -n 1 -P 1 -I '{}' cbfs-compression-tool compress '{}' out/'{}' LZMA)
real 0m10.444s
user 0m10.280s
sys 0m0.064s
Change-Id: I40be087e85d09a895b1ed277270350ab65a4d6d4
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: https://review.coreboot.org/18099
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
44 lines
1.3 KiB
Makefile
44 lines
1.3 KiB
Makefile
top ?= $(abspath ../..)
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objutil ?= $(top)/util
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CONFIG_FMD_GENPARSER ?= n
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HOSTCC ?= $(CC)
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OBJCOPY ?= objcopy
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VBOOT_SOURCE ?= $(top)/3rdparty/vboot
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.PHONY: all
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all: cbfstool fmaptool rmodtool ifwitool cbfs-compression-tool
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cbfstool: $(objutil)/cbfstool/cbfstool
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fmaptool: $(objutil)/cbfstool/fmaptool
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rmodtool: $(objutil)/cbfstool/rmodtool
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ifwitool: $(objutil)/cbfstool/ifwitool
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cbfs-compression-tool: $(objutil)/cbfstool/cbfs-compression-tool
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.PHONY: clean cbfstool fmaptool rmodtool ifwitool cbfs-compression-tool
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clean:
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$(RM) fmd_parser.c fmd_parser.h fmd_scanner.c fmd_scanner.h
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$(RM) $(objutil)/cbfstool/cbfstool $(cbfsobj)
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$(RM) $(objutil)/cbfstool/fmaptool $(fmapobj)
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$(RM) $(objutil)/cbfstool/rmodtool $(rmodobj)
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$(RM) $(objutil)/cbfstool/ifwitool $(ifwiobj)
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$(RM) $(objutil)/cbfstool/cbfs-compression-tool $(cbfscompobj)
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linux_trampoline.c: linux_trampoline.S
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rm -f linux_trampoline.c
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$(CC) -m32 -o linux_trampoline linux_trampoline.S -ffreestanding -nostdlib -nostdinc -Wl,--defsym=_start=0
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$(OBJCOPY) -Obinary -j .data linux_trampoline trampoline
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echo "/* This file is automatically generated. Do not manually change */" > trampoline.c
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xxd -c 16 -i trampoline >> trampoline.c
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mv trampoline.c linux_trampoline.c
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rm linux_trampoline trampoline
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.SILENT:
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include Makefile.inc
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