On 8/19/2019 11:02 AM, SZEDER Gábor wrote: > On Mon, Aug 19, 2019 at 10:50:48AM -0400, Derrick Stolee wrote: >> Note that I don't include the "without patch" numbers. For some >> reason the path provided is particularly nasty and caused 20,000+ >> missing blobs to be downloaded one-by-one (remember: VFS for Git >> has many partial-clone-like behaviors). I canceled my test after 55 >> minutes. I'll dig in more to see what is going on, since only 37 >> commits actually change that path. > > Don't bother digging into it, I know why it happens (and how to avoid > it! :), but don't have the time right now to explain. Great! I look forward to your explanation and fix later. Just to be sure we've got the same issue, here is a section of the call stack in the hot portion: line_log_filter + queue_diffs + diffcore_std + diffcore_rename + diff_populate_filespec Thanks, -Stolee