From: Linus Torvalds Date: Thu, 11 Jan 2007 22:28:21 GMT Subject: Re: [PATCH] Speedup recursive by flushing index only once for all entries Message-ID: In-Reply-To: <20070111221053.GD6058@steel.home> On Thu, 11 Jan 2007, Alex Riesen wrote: > > It must have been large leak, as I really have seen the memory usage > dropping down significantly. I really think it was about 6MB (or whatever your index file size was) per every single resolved file. I think merge-recursive used to flush the index file every time it resolved something, and every flush would basically leak the whole buffer used to write the index. Anyway, 40-50 sec on a fairly weak laptop for a 44k-file merge sounds like git doesn't have to be totally embarrassed. I'm not saying we shouldn't be able to do it faster, but it's at least _possible_ that a lot of the time spent is now spent doing real work (ie maybe you actually have a fair amount of file-level merging? Maybe it's 40-50 sec because there's some amount of real IO going on, and a fair amount of real work done too?) Linus