On 09/09/2016 11:51 AM, Celejar wrote: > On Tue, 9 Aug 2016 18:57:02 -0700 > David Christensen <dpchr...@holgerdanske.com> wrote: > > ... > >> My laptop has 802.11 a/b/g WiFi and Fast Ethernet. Wireless data >> transfers are slow (~50 Mbps). Wired is twice as fast (100 Mbps); still >> slow. Newer WiFi (n, ac) should be faster, but only the newest WiFi >> hardware can match or beat Gigabit. > > You get ~50Mbps over a/b/g? 54Mbps is the theoretical maximum, and > everything I've read says that 20-24Mbps is the real-world maximum. > > Celejar >
Benchmarking using WiFi (48 Mb/s): 2016-09-09 20:18:51 dpchrist@t7400 ~ $ time dd if=/dev/urandom of=urandom.100M bs=1M count=100 100+0 records in 100+0 records out 104857600 bytes (105 MB) copied, 12.6709 s, 8.3 MB/s real 0m12.703s user 0m0.000s sys 0m12.481s 2016-09-09 20:19:32 dpchrist@t7400 ~ $ time scp -p urandom.100M samba:. urandom.100M 100% 100MB 1.5MB/s 01:08 real 1m16.023s user 0m4.548s sys 0m0.744s So, 1048576900 bytes * 8 bits / byte / 76.024 seconds = 110341671 bits/second Testing again using Fast Ethernet (100 Mb/s): 2016-09-09 20:29:54 dpchrist@t7400 ~ $ time scp -p urandom.100M samba:. urandom.100M 100% 100MB 2.4MB/s 00:42 real 0m43.377s user 0m4.476s sys 0m0.876s So, 1048576900 bytes * 8 bits / byte / 43.377 seconds = 193388552. bits/second Wow. Even worse than I was expecting... David