Go build performance by version

go-perf.txt

go version go1.4.3 linux/amd64
user=27.26 system=3.68 total=14.95 max_rss=125776kB status=0 go build github.com/dynport/dgtk/...
user=26.53 system=3.09 total=8.54 max_rss=125780kB status=0 go build github.com/dynport/dgtk/...
user=26.19 system=3.30 total=8.40 max_rss=125772kB status=0 go build github.com/dynport/dgtk/...
user=26.44 system=3.34 total=8.50 max_rss=125992kB status=0 go build github.com/dynport/dgtk/...
user=26.54 system=3.08 total=8.49 max_rss=125772kB status=0 go build github.com/dynport/dgtk/...
user=26.40 system=3.32 total=8.63 max_rss=126344kB status=0 go build github.com/dynport/dgtk/...
user=26.30 system=3.23 total=8.50 max_rss=125772kB status=0 go build github.com/dynport/dgtk/...
user=26.50 system=3.23 total=8.54 max_rss=125772kB status=0 go build github.com/dynport/dgtk/...
user=26.44 system=3.24 total=8.59 max_rss=125776kB status=0 go build github.com/dynport/dgtk/...
user=26.28 system=3.40 total=8.54 max_rss=125776kB status=0 go build github.com/dynport/dgtk/...

go version go1.5.1 linux/amd64
user=88.06 system=5.29 total=25.75 max_rss=156632kB status=0 go build github.com/dynport/dgtk/...
user=89.80 system=5.06 total=26.05 max_rss=157052kB status=0 go build github.com/dynport/dgtk/...
user=89.38 system=5.34 total=25.95 max_rss=156484kB status=0 go build github.com/dynport/dgtk/...
user=89.33 system=5.28 total=25.96 max_rss=156748kB status=0 go build github.com/dynport/dgtk/...
user=90.27 system=5.46 total=26.09 max_rss=145284kB status=0 go build github.com/dynport/dgtk/...
user=89.78 system=5.67 total=26.28 max_rss=157240kB status=0 go build github.com/dynport/dgtk/...
user=89.68 system=5.51 total=26.14 max_rss=158072kB status=0 go build github.com/dynport/dgtk/...
user=89.03 system=5.73 total=26.06 max_rss=156644kB status=0 go build github.com/dynport/dgtk/...
user=88.09 system=5.55 total=25.74 max_rss=149508kB status=0 go build github.com/dynport/dgtk/...
user=89.48 system=5.38 total=26.09 max_rss=156492kB status=0 go build github.com/dynport/dgtk/...

go version go1.6beta1 linux/amd64
user=91.32 system=5.24 total=26.40 max_rss=156912kB status=0 go build github.com/dynport/dgtk/...
user=90.75 system=5.15 total=25.92 max_rss=155816kB status=0 go build github.com/dynport/dgtk/...
user=91.08 system=4.98 total=26.13 max_rss=151816kB status=0 go build github.com/dynport/dgtk/...
user=91.25 system=5.27 total=26.18 max_rss=147056kB status=0 go build github.com/dynport/dgtk/...
user=91.16 system=5.13 total=26.29 max_rss=146788kB status=0 go build github.com/dynport/dgtk/...
user=91.14 system=5.15 total=26.21 max_rss=151304kB status=0 go build github.com/dynport/dgtk/...
user=92.12 system=5.08 total=26.52 max_rss=159072kB status=0 go build github.com/dynport/dgtk/...
user=90.72 system=5.07 total=25.93 max_rss=169732kB status=0 go build github.com/dynport/dgtk/...
user=91.93 system=5.09 total=26.33 max_rss=156352kB status=0 go build github.com/dynport/dgtk/...
user=90.26 system=4.99 total=25.95 max_rss=159172kB status=0 go build github.com/dynport/dgtk/...