Brad Fitzpatrick
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b0f39cc27c
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io, net, http: sendfile support
Speeds up static fileserver, avoiding kernel/userspace copies.
Numbers: downloading 14 MB AppEngine Go SDK with ab (Apache Bench)
with 5 threads:
Before/after numbers:
CPU:
user 0m3.910s
sys 0m23.650s
->
user 0m0.720s
sys 0m4.890s
Time taken for tests: 8.906 seconds
->
Time taken for tests: 8.545 seconds
Percentage of the requests served within a certain time (ms)
50% 44
66% 45
75% 46
80% 46
90% 48
95% 51
98% 59
99% 71
100 74 (longest request)
->
50% 42
66% 43
75% 43
80% 44
90% 46
95% 57
98% 62
99% 63
100% 64 (longest request)
R=iant, gary.burd, rsc, bradfitz
CC=golang-dev
https://golang.org/cl/4543071
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2011-05-25 10:15:26 -07:00 |