On Sun, Sep 12, 2021 at 05:46:18PM -0700, Junio C Hamano wrote: > What I am wondering is if we can come up with a "now, because we no > longer lose hashcache, we can do X so much better, here are the > numbers". Sure, here they are. Bear in mind that these numbers are (a) on git.git and (b) with `pack.threads` set to 1 so the overall runtime looks more like CPU time. Test origin/tb/multi-pack-bitmaps HEAD ------------------------------------------------------------------------------------- 5326.4: simulated clone 1.87(1.80+0.07) 1.46(1.42+0.03) -21.9% 5326.5: simulated fetch 2.66(2.61+0.04) 1.47(1.43+0.04) -44.7% 5326.6: pack to file (bitmap) 2.74(2.62+0.12) 1.89(1.82+0.07) -31.0% Apologies for taking a little while to respond, I spent longer than I'm willing to admit double checking these numbers with Peff because of inconsistencies in my testing setup. Alas, there they are. They are basically no different than having the name-hash for single pack bitmaps, it's just now we don't throw them away when generating a MIDX bitmap from a state where the repository already has a single-pack bitmap. Thanks, Taylor
