From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Greear Date: Fri, 22 Nov 2013 07:00:31 -0800 Subject: [ath9k-devel] AP Limitation because of ATH9K_HTC_MAX_STA In-Reply-To: <528F6E78.10903@rempel-privat.de> References: <51DA79B6.8030702@djardin.de> <528D063F.5050008@candelatech.com> <528F30B2.6000805@rempel-privat.de> <528F6CC4.5080404@candelatech.com> <528F6E78.10903@rempel-privat.de> Message-ID: <528F718F.3050808@candelatech.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ath9k-devel@lists.ath9k.org On 11/22/2013 06:47 AM, Oleksij Rempel wrote: > Am 22.11.2013 15:40, schrieb Ben Greear: >> On 11/22/2013 02:23 AM, Oleksij Rempel wrote: >>> Am 20.11.2013 20:01, schrieb Gustavo Azambuja: >>>> Ben, thanks for you reply. >>>> I need to convert my rPi into a AP (is not an option a "real" AP) to >>>> get at less 30 stations. You know some way to get a list of >>>> devices/drivers can support this? >>> >>> It's all about USB, RAM and power. >>> If you use usb to communicate with wireless hardware, then your first >>> problem is usb - it is too slow! Some times it is too slow even for one >>> connection. This is why we have usb wifi adapters with internal cpu, ram >>> and firmware (micro operation system). If you wont to add more >>> connections you will need more ram and may be more cpu power. This will >>> need more power from usb, which is limited to 500mA. >>> In this case, just take some AP, connect it over ethernet and you will >>> get same result. >> >> The RAM is certainly an issue, but just adding more stations should not >> have much CPU impact as the total throughput is unlikely to increase >> as more stations are added. >> >> Changing software to make better use of RAM is also unlikely to increase >> power usage, though adding more RAM to the hardware might. > > patches are welcome I'm sure :) My customers are all interested in /AC these days, so I'm putting my effort there. If/when someone opens an /AC firmware to the public I will be all over it! >> Out of curiosity, does anyone know how much RAM is on those adapters? > > http://wikidevi.com/wiki/AR9271 > http://wikidevi.com/wiki/AR7010 Thanks, that is good info. Ben -- Ben Greear Candela Technologies Inc http://www.candelatech.com