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On 5/24/07, Nitin Gupta <nitingupta910@gmail.com> wrote: > On 5/25/07, Bret Towe <magnade@gmail.com> wrote: > > On 5/24/07, Nitin Gupta <nitingupta910@gmail.com> wrote: > > > On 5/23/07, Bret Towe <magnade@gmail.com> wrote: > > > > On 5/23/07, Nitin Gupta <nitingupta910@gmail.com> wrote: > > > > > > > > For now, tested on x86 only. > > > > > > > > If you have a program to test this I can run it on an amd64 and a g4 ppc > > > > > > > > > > Attached is the kernel module (compress-test) to test this LZO code. > > > Just compile this module against 2.6.22-rc2 with this LZO patch. Then > > > testing can be done as: > > > 1- Mount DebugFS somewhere e.g: > > > mkdir /debug; mount -t debugfs debugfs /debug > > > 2- Load the module and do: > > > cat /path/to/some_file > /debug/compress_test/compress > > > (/var/log/messages should show that compression was successful) > > > 3- Then decompress this file as: > > > cat /debug/compress_test/decompress > /tmp/t > > > (/var/log/messages should show that decompression was successful) > > > 4- For extra verification do: > > > diff /tmp/t /path/to/some_file -- O/P must be empty > > > > > > > > > > the test worked fine on amd64 > > from dmesg: > > LZO compress successful: orig_size=17448, comp_size=8183 > > LZO decompress successful: decomp_size=17448 > > > > and input and output files I gave it: > > sha1sum test-input output > > 2221c586e3eb869af7f4333d4f56b441b9aa8414 test-input > > 2221c586e3eb869af7f4333d4f56b441b9aa8414 output > > > > Good to know it worked correctly on 64-bit system too. I will also > add exporting benchmarking figures soon. > > > (will be giving the ppc box the same file to test btw when I get to it) [ 237.556167] LZO compress successful: orig_size=17448, comp_size=8183 [ 253.320760] LZO decompress successful: decomp_size=17448 2221c586e3eb869af7f4333d4f56b441b9aa8414 test-input 2e6c96b687274b629308b29835cebd3af989e0c7 output ppc however seems bust the computer is a g4 mini > > and I don't know if it matters much but I tried feeding it a 260k file > > and it didn't like it > > > > cat /usr/bin/yelp > /debug/compress_test/compress > > cat: write error: No space left on device > > > > Ah! I forgot to mention that max file size to feed is 256K (this was > just for simplicity of compress-test module implementation). figured it might be something like that > Thanks for your testing. no problem > - Nitin > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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