On 5/24/07, Nitin Gupta <[email protected]> wrote:
On 5/25/07, Bret Towe <[email protected]> wrote:
> On 5/24/07, Nitin Gupta <[email protected]> wrote:
> > On 5/23/07, Bret Towe <[email protected]> wrote:
> > > On 5/23/07, Nitin Gupta <[email protected]> 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 [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
