zucchini performance compared to courgette

[Daolin Liu]

Hi,

I use courgette to generate the patch of sk_sp<SkData> in my own purpose with old version 104. I notice that zucchini is used now. Can someone tell me the performance improvement about the diff data generation time？My SKP is about 100K to 10M generated frequently. I use Perf tool and find that the bsdiff::CreateBinaryPatch() took too many time, so I want to switch to zucchini in case there will be a big improvement (Because I also need to change the code to support Apply function in another side, so I cannot change the whole code ASAP to verify the performance with zucchini   ).

Thanks,
Dorian

[Samuel Huang]

Hi Dorian,

The main advantages of Zucchini over Courgette are (compressed) patch size, patch-application memory, and modernity. In terms of patch generation, Zucchini isn't significantly faster than Courgette.

Both Courgette and Zucchini are command line tools, so perhaps you can compare their speeds by direct timing? Note that these tools are unsuitable for real-time applications

Meanwhile, Zucchini-gen has a -raw setting that should be a bit faster (but offers worse patch size) if you're patching binary formats that Zucchini understands (e.g., {PE, ELF, DEX} files).

--

Samuel Huang

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