Мой свежий MacBook Pro late 2011 хреновенько держал беспроводную сеть. Картина печальная:
64 bytes from 192.168.1.1: icmp_seq=1075 ttl=64 time=1451.455 ms
Request timeout for icmp_seq 1077
64 bytes from 192.168.1.1: icmp_seq=1077 ttl=64 time=1358.118 ms
64 bytes from 192.168.1.1: icmp_seq=1078 ttl=64 time=715.122 ms
64 bytes from 192.168.1.1: icmp_seq=1079 ttl=64 time=652.952 ms
64 bytes from 192.168.1.1: icmp_seq=1080 ttl=64 time=294.866 ms
64 bytes from 192.168.1.1: icmp_seq=1082 ttl=64 time=368.870 ms
64 bytes from 192.168.1.1: icmp_seq=1083 ttl=64 time=615.296 ms
Request timeout for icmp_seq 1084
64 bytes from 192.168.1.1: icmp_seq=1085 ttl=64 time=656.923 ms
Request timeout for icmp_seq 1086
64 bytes from 192.168.1.1: icmp_seq=1086 ttl=64 time=1128.858 ms
64 bytes from 192.168.1.1: icmp_seq=1088 ttl=64 time=542.205 ms
Request timeout for icmp_seq 1089
64 bytes from 192.168.1.1: icmp_seq=1090 ttl=64 time=649.374 ms
Request timeout for icmp_seq 1091
64 bytes from 192.168.1.1: icmp_seq=1092 ttl=64 time=882.039 ms
Request timeout for icmp_seq 1093
64 bytes from 192.168.1.1: icmp_seq=1094 ttl=64 time=667.309 ms
Request timeout for icmp_seq 1095
Request timeout for icmp_seq 1096
64 bytes from 192.168.1.1: icmp_seq=1097 ttl=64 time=241.912 ms
Request timeout for icmp_seq 1098
После сканирования других сетей и выбора уникального канала в настройках точки доступа все стало гораздо лучше (до этого канал стоял Auto и выбор падал на 1-й):
--- 192.168.1.1 ping statistics ---
183 packets transmitted, 173 packets received, 5.5% packet loss
round-trip min/avg/max/stddev = 1.061/3.985/17.368/1.837 ms