CCM 1.3x

[Hahobas]

Christian. Thanks for your continued work on ccm. Here's some benchmarks.

Test System: AMD Athlon 64 3000+ (Venice, single core) with 2GIG Corsair DDR CL2 RAM
ccm130a->ccm.exe c 3 enwik8 (22351098 Bytes) - 1 m 25 s -
ccm130a->ccm.exe d enwik8 - 1 m 24 s -
ccm130b->ccm.exe c 3 enwik8 (22351098 Bytes) - 1 m 28 s - compression 3.5% slower
ccm130b->ccm.exe d enwik8 - 1 m 30 s - decompression 7.1% slower

ccm130a->ccm.exe c 7 enwik8 (21980533 Bytes) - 1 m 28 s -
ccm130a->ccm.exe d enwik8 - 1 m 29 s -
ccm130b->ccm.exe c 7 enwik8 (21980533 Bytes) - 1 m 31 s - compression 3.4% slower
ccm130b->ccm.exe d enwik8 - 1 m 32 s - decompression 3.3% slower

ccm130a->ccmx.exe c 3 enwik8 (21646059 Bytes) - 1 m 52 s -
ccm130a->ccmx.exe d enwik8 - 1 m 53 s -
ccm130b->ccmx.exe c 3 enwik8 (21646059 Bytes) - 2 m 3 s - compression 9.8% slower
ccm130b->ccmx.exe d enwik8 - 1 m 58 s - decompression 4.4% slower

ccm130a->ccmx.exe c 7 enwik8 (20857925 Bytes) - 1 m 56 s -
ccm130a->ccmx.exe d enwik8 - 1 m 58 s -
ccm130b->ccmx.exe c 7 enwik8 (20857925 Bytes) - 2 m 1 s - compression 4.3% slower
ccm130b->ccmx.exe d enwik8 - 2 m 2 s - decompression 3.3% slower

Maybe the intel folks will see an improvement with 130b.

[Christian]

Hmmm, that's not good. On my system CCM and CCMx was around ~1% faster for compression and decompression. But on the other hand, the profile feedback was generated on MY box using much more data than just ENWIK.
Anyway, I think I'll continue to use profile optimization in the future. It's much more convenient to use it than hand tuning the source - e.g. for Slug it really helped (no more trial and error coding). RZM's decompression is faster, too. And I still hope that GCC's automagical optimizations will improve further.
Prefetching is another story, but I haven't tried it out yet.

[LovePimple]

Thanks Chris! :)

The latest CCM and RZM are now available for download from my site.

http://www.geocities.com/lovepimple_mail/

I have been busy today or they would have been available much sooner.

[Christian]

Here's a new compile. I removed some compiler switches and changed the data set on which the profile feedback was created. On my C2D system these executables are a tiny bit faster for compression and a little faster for decompression (than 1.30a). Now, I'll wait for some benchmarks to see if the compiler settings are heading in the right direction.

Hahobas:
Can you rerun your tests just to be sure that the timings are right. Maybe you can check something different than enwik, too?

Download CCM 1.30c

[LovePimple]

Thanks Chris! :)

Mirror: Download

[Hahobas]

Christian,

This version seems better. Sorry my benchmarks aren't exactly the same each time. I don't have a lot of time to do several runs and average them. Anyway, I benchmarked ccm130a against ccm130c, and with enwik8, and also compressed a 700 Meg Fedora 9 live iso image.

Overall, it looks like decompression has improved slightly, and compression is just a little bit slower.

Test System: AMD Athlon 64 3000+ (Venice, single core) with 2GIG Corsair DDR CL2 RAM

ccm130a->ccm.exe c 3 enwik8 (22351098 Bytes) - 1 m 24 s -
ccm130a->ccm.exe d enwik8 - 1 m 25 s -
ccm130c->ccm.exe c 3 enwik8 (22351098 Bytes) - 1 m 26 s - compression 2.3% slower
ccm130c->ccm.exe d enwik8 - 1 m 24 s - decompression 1.1% faster
-----------------
ccm130a->ccm.exe c 7 enwik8 (21980533 Bytes) - 1 m 27 s -
ccm130a->ccm.exe d enwik8 - 1 m 28 s -
ccm130c->ccm.exe c 7 enwik8 (21980533 Bytes) - 1 m 30 s - compression 3.4% slower
ccm130c->ccm.exe d enwik8 - 1 m 28 s - No Change
-----------------
ccm130a->ccmx.exe c 3 enwik8 (21646059 Bytes) - 1 m 51 s -
ccm130a->ccmx.exe d enwik8 - 1 m 54 s -
ccm130c->ccmx.exe c 3 enwik8 (21646059 Bytes) - 1 m 55 s - compression 3.6% slower
ccm130c->ccmx.exe d enwik8 - 1 m 54 s - No Change
-----------------

ccm130a->ccmx.exe c 7 enwik8 (20857925 Bytes) - 1 m 56 s -
ccm130a->ccmx.exe d enwik8 - 1 m 58 s -

ccm130c->ccmx.exe c 7 enwik8 (20857925 Bytes) - 1 m 59 s - compression 2.5% slower
ccm130c->ccmx.exe d enwik8 - 1 m 58 s - No Change
-----------------
ccm130a->ccm.exe c 3 Fedora.iso (705557934 Bytes) - 15 m 10 s -
ccm130a->ccm.exe d Fedora.iso - 14 m 56 s -
ccm130c->ccm.exe c 3 Fedora.iso (705557934 Bytes) - 15 m 18 s - compression .8% slower
ccm130c->ccm.exe d Fedora.iso - 14 m 35 s - decompression 2.4% faster
-----------------
ccm130a->ccmx.exe c 3 Fedora.iso (705565431 Bytes) - 15 m 17 s -
ccm130a->ccmx.exe d Fedora.iso - 14 m 59 s -
ccm130c->ccmx.exe c 3 Fedora.iso (705565431 Bytes) - 15 m 45 s - compression 3.0% slower
ccm130c->ccmx.exe d Fedora.iso - 15 m 21 s - decompression 2.4% slower
-----------------

[Christian]

CCM now has a homepage to circumvent the web hosting nuisance.

[Bulat Ziganshin]

great news!!! how about adding old versions of ccm/slug/rzm to download?

[LovePimple]

Excellent news!

Quoting: Bulat Ziganshin

great news!!! how about adding old versions of ccm/slug/rzm to download?

I agree with Bulat. It would be good to have at least one previous version available for download.

[Christian]

Thanks. :)

Quoting: LovePimple

It would be good to have at least one previous version available for download.

I'll add one previous version for now.

[LovePimple]

Thanks Chris! :)

[Christian]

Quoting: Christian

I'll add one previous version for now.

Just added some previous versions for all tools and added some info to the pages.