On 01/04/2016 06:34 PM, Jack Craig wrote:
how due you calculate throughput? i have a wireless config for 54 Mbit/sec but never measured... On Mon, Jan 4, 2016 at 4:30 PM, Wolfgang S. Rupprecht <wolfgang.rupprecht@xxxxxxxxx <mailto:wolfgang.rupprecht@xxxxxxxxx>> wrote: Does Fedora/Linux support the faster than 54 Mbit/sec 802.11n speeds? My OpenWRT AP has a status page that claims that the 5 Ghz radio is configured for a 150 Mbits/sec 40Mhz (double-wide) channel. I'm only seeing a 54 Mbit/sec throughput over WIFI though. (Over ethernet to the same router I'm seeing the expected 180 Mbits/sec to the internet.) This is what lshw(1) has to say about the wifi card: *-network description: Wireless interface product: RTL8821AE 802.11ac PCIe Wireless Network Adapter vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:03:00.0 logical name: wlp3s0 version: 00 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=rtl8821ae driverversion=4.2.8-300.fc23.x86_64 firmware=N/A ip=192.168.75.107 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn resources: irq:52 ioport:3000(size=256) memory:b2000000-b2003fff Does this ring any bells? I can easily believe that the faster speeds are proprietary extensions but figured I'd check.
AFAIK, 802.11n has a theoretical limit of 160Mbps. However, that's over that full, 40MHz double-wide channel with no channel contention and no other radios active. The radio on your AP is shared among all users of the AP so you have to take that into account. The theoretical limits of the radio are probably only approached in a lab environment for any wifi technology. The real world is, well, different. :-) If you want higher speeds, then 802.11ac is a better route. Note that it only works over the 5GHz radio (not the 2.4GHz that 802.11n can use), so it doesn't have the range or "penetration power" (ability to go through walls, etc.) that the 2.4GHz band has. None the less, it is faster (theoretically over 8 times faster than 802.11n due to a number of additional things done in the protocol, muxing, antenna handling and session management). As always, YMMV. I find 802.11n fine for what I need wifi for, although I do have 802.11ac available as well. If I need higher speed, my house is fully CAT6-ified with an Extreme Summit 400-48T 48-port switch in the middle, so I can "go copper" if I need higher speed (sorta gilding the lily since my Internet link is only 100Mbps upload (download is faster, but I do a lot of uploading due to my job). ---------------------------------------------------------------------- - Rick Stevens, Systems Engineer, AllDigital ricks@xxxxxxxxxxxxxx - - AIM/Skype: therps2 ICQ: 226437340 Yahoo: origrps2 - - - - Blessed are the peacekeepers...for they shall be shot at - - from both sides. --A.M. Greeley - ---------------------------------------------------------------------- -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
