On Sun, 7 Sep 2008, Jon Smirl wrote: > On 9/7/08, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > > > > > > On Sat, 6 Sep 2008, Jon Smirl wrote: > > > > > > > > When I was playing with those giant Mozilla packs speed of zlib wasn't > > > a big problem. Number one problem was the repack process exceeding 3GB > > > which forced me to get 64b hardware and 8GB of memory. If you start > > > swapping in a repack, kill it, it will probably take a month to > > > finish. > > > > > > .. and you'd make things much much WORSE? > > My observations on the Mozilla packs indicated that the problems were > elsewhere in git, not in the decompression algorithms. Why does a > single 2000 delta chain take 15% of the entire pack time? Something > isn't right when long chains are processed which triggers far more > decompressions than needed. Please have a look at commit eac12e2d4d7f. This fix improved things for my gcc repack tests. Nicolas -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
