Jeff King <peff@xxxxxxxx> writes: > On Thu, Aug 10, 2017 at 11:58:34AM -0700, Stefan Beller wrote: > >> On Thu, Aug 10, 2017 at 11:47 AM, Kevin Willford <kcwillford@xxxxxxxxx> wrote: >> > String formatting can be a performance issue when there are >> > hundreds of thousands of trees. >> >> When changing this for the sake of performance, could you give >> an example (which kind of repository you need for this to become >> a bottleneck? I presume the large Windows repo? Or can I >> reproduce it with a small repo such as linux.git or even git.git?) >> and some numbers how this improves the performance? > > I was about to say the same thing. Normally I don't mind a small > optimization without numbers if the result is obviously an improvement. > > But in this case the result is a lot less readable, and it's not > entirely clear to me that it would always be an improvement (we now > always run 3 strbuf calls instead of one, and have to check the length > for each one). > > What I'm wondering specifically is if vsnprintf() on Kevin's platform > (which I'll assume is Windows) is slow, and we would do better to > replace it with a faster compat/ routine. Yeah, I had the same reaction.
