Messages in this thread | | | Date | Fri, 4 Dec 2020 11:21:40 +0800 | From | Gao Xiang <> | Subject | Re: [f2fs-dev] [PATCH v6] f2fs: compress: support compress level |
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On Fri, Dec 04, 2020 at 11:11:03AM +0800, Chao Yu wrote: > On 2020/12/4 10:47, Gao Xiang wrote:
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> > > future (and add more dependency to algorithms, you might see BWT-based bzip2 > > removal patch > > Oops, is that really allowed? I don't this is a good idea...and I don't see there > are deletions from fs/ due to similar reason...
Fortunately, bzip is quite slow algorithm, so not affective at all.
My personal opinion based on compress algorithm principle (just for reference as well...) - zlib should be better replaced with libdeflate if possible, the main point is that many hardware accelerator for deflate (LZ77 + huffman) are available;
- lzo is not attractive from its format complexity and its CR/performance goal so lz4 is generally better due to its format design;
- lzo-rle, oops, just introduced for zram I think, not sure quite helpful for file data (since anonymous pages are generally RLE-effective due to many repeative data.) But it'd be good if lzo author accepts it.
Thanks, Gao Xiang
> > Thanks, > > >
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