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randomstatistic/gist:a7a026798880e1003777

Created May 7, 2014 18:38
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Microsecond timing of DNS resolution
Raw
gistfile1.txt
for x in `seq 1 20`; do strace -f -tt -o /tmp/st dig
www.google.com > /dev/null && grep -P '(send|recv)msg\(20'
/tmp/st | grep -v EAGAIN | awk '/sendmsg/ {f= substr($2,7)} /recvmsg/
{e= substr($2,7)} END {print e-f}'; done | sort -n
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