On Friday, May 2, 2025 at 1:49:08 am +02:00, Sergey Senozhatsky <senozhatsky@chromium.org> wrote:

> On (25/04/23 21:53), Vitaly Wool wrote:
> [..]
> 
> > * zsmalloc/zstd/make -j32 bzImage
> > real	8m0.594s
> > user	39m37.783s
> > sys	8m24.262s
> > Zswap: 200600 kB <-- after build completion
> > Zswapped: 854072 kB <-- after build completion
> > zswpin 309774
> > zswpout 1538332
> > 
> > * zblock/zstd/make -j32 bzImage
> > real	7m35.546s
> > user	38m03.475s
> > sys	7m47.407s
> > Zswap: 250940 kB <-- after build completion
> > Zswapped: 870660 kB <-- after build completion
> > zswpin 248606
> > zswpout 1277319
> > 
> I'm sorry but what does this test test? That under memory pressure the
> kernel swaps out different pages with different compression characteristics?
> This test illustrates that zblock is faster than zsmalloc. No rocket science here.


~Vitaly