David Anderson c54cc24e87 util/dnsname: make ToFQDN take exactly 0 or 1 allocs for everything. ... name old time/op new time/op delta ToFQDN/www.tailscale.com.-32 9.55ns ± 2% 12.13ns ± 3% +27.03% (p=0.000 n=10+10) ToFQDN/www.tailscale.com-32 86.3ns ± 1% 40.7ns ± 1% -52.86% (p=0.000 n=10+9) ToFQDN/.www.tailscale.com-32 86.5ns ± 1% 40.4ns ± 1% -53.29% (p=0.000 n=10+9) ToFQDN/_ssh._tcp.www.tailscale.com.-32 12.8ns ± 2% 14.7ns ± 2% +14.24% (p=0.000 n=9+10) ToFQDN/_ssh._tcp.www.tailscale.com-32 104ns ± 1% 45ns ± 0% -57.16% (p=0.000 n=10+9) name old alloc/op new alloc/op delta ToFQDN/www.tailscale.com.-32 0.00B 0.00B ~ (all equal) ToFQDN/www.tailscale.com-32 72.0B ± 0% 24.0B ± 0% -66.67% (p=0.000 n=10+10) ToFQDN/.www.tailscale.com-32 72.0B ± 0% 24.0B ± 0% -66.67% (p=0.000 n=10+10) ToFQDN/_ssh._tcp.www.tailscale.com.-32 0.00B 0.00B ~ (all equal) ToFQDN/_ssh._tcp.www.tailscale.com-32 112B ± 0% 32B ± 0% -71.43% (p=0.000 n=10+10) name old allocs/op new allocs/op delta ToFQDN/www.tailscale.com.-32 0.00 0.00 ~ (all equal) ToFQDN/www.tailscale.com-32 2.00 ± 0% 1.00 ± 0% -50.00% (p=0.000 n=10+10) ToFQDN/.www.tailscale.com-32 2.00 ± 0% 1.00 ± 0% -50.00% (p=0.000 n=10+10) ToFQDN/_ssh._tcp.www.tailscale.com.-32 0.00 0.00 ~ (all equal) ToFQDN/_ssh._tcp.www.tailscale.com-32 2.00 ± 0% 1.00 ± 0% -50.00% (p=0.000 n=10+10) Signed-off-by: David Anderson <danderson@tailscale.com>		2021-05-31 21:13:50 -07:00
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dnsname.go	util/dnsname: make ToFQDN take exactly 0 or 1 allocs for everything.	2021-05-31 21:13:50 -07:00
dnsname_test.go	util/dnsname: add a benchmark for ToFQDN.	2021-05-31 21:13:50 -07:00