Same download failed here too. Hoping for a resolution of the problem.
FonsRademakers
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Having MBP 15" 2018 upgraded from Catalina to Big Sur. I notice that the WiFi networking slows down and suffers huge amount of packet loss. Turning off and back on the WiFi on the mac solves the problem for a while after which again I've a lot of packet loss. A MacBook Air M1 and my iPhone on the same WiFi network run stable, without any packet loss. See:
(drroot) [136] ping lxplus.cern.ch
PING lxplus.cern.ch (188.185.86.233): 56 data bytes
64 bytes from 188.185.86.233: icmpseq=0 ttl=54 time=14.388 ms
Request timeout for icmpseq 1
Request timeout for icmpseq 2
Request timeout for icmpseq 3
64 bytes from 188.185.86.233: icmpseq=4 ttl=54 time=11.279 ms
64 bytes from 188.185.86.233: icmpseq=5 ttl=54 time=30.184 ms
Request timeout for icmpseq 6
Request timeout for icmpseq 7
Request timeout for icmpseq 8
Request timeout for icmpseq 9
64 bytes from 188.185.86.233: icmpseq=10 ttl=54 time=36.931 ms
Request timeout for icmpseq 11
64 bytes from 188.185.86.233: icmpseq=12 ttl=54 time=77.474 ms
Request timeout for icmpseq 13
Request timeout for icmpseq 14
^C-- lxplus.cern.ch ping statistics
16 packets transmitted, 5 packets received, 68.8% packet loss
round-trip min/avg/max/stddev = 11.279/34.051/77.474/23.723 ms
After WiFi off/on on the mac:
(drroot) [137] ping lxplus.cern.ch
PING lxplus.cern.ch (188.185.90.109): 56 data bytes
64 bytes from 188.185.90.109: icmpseq=0 ttl=54 time=7.194 ms
64 bytes from 188.185.90.109: icmpseq=1 ttl=54 time=19.969 ms
64 bytes from 188.185.90.109: icmpseq=2 ttl=54 time=8.371 ms
64 bytes from 188.185.90.109: icmpseq=3 ttl=54 time=9.240 ms
64 bytes from 188.185.90.109: icmpseq=4 ttl=54 time=9.573 ms
64 bytes from 188.185.90.109: icmpseq=5 ttl=54 time=7.506 ms
64 bytes from 188.185.90.109: icmpseq=6 ttl=54 time=6.994 ms
64 bytes from 188.185.90.109: icmpseq=7 ttl=54 time=17.107 ms
64 bytes from 188.185.90.109: icmpseq=8 ttl=54 time=16.013 ms
64 bytes from 188.185.90.109: icmpseq=9 ttl=54 time=15.216 ms
64 bytes from 188.185.90.109: icmpseq=10 ttl=54 time=14.521 ms
64 bytes from 188.185.90.109: icmp_seq=11 ttl=54 time=9.223 ms
^C
Is this a known issue? The answers in this thread don't show packet loss, but the effect of losing WiFi connection is the same.
Cheers, Fons.