tree bfa7a52beb4ca94c2431a93940786ecf414a692b
parent f27348776f3c898d9e5dc3c910dbac99ae482e52
author Bobby Powers <bobbypowers@gmail.com> 1333759892 +1000
committer Rob Pike <r@golang.org> 1333759892 +1000
golang-hg d9e4f47ae3413b736c6c284875647b593d833029

time: in Format give buffer an initial capacity

I have a small web server that simply sets several cookies
along with an expires header, and then returns.  In the
cpuprofile for a 200k request benchmark, time.Time.Format()
was showing up as 8.3% of cpu usage.  Giving the buffer an
inital capacity to avoid reallocs on append drops it down to
7.6%.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5992058