Hello,

By "1s freeze", I mean that all packets are dropped for a duration of 1
second. It happens at a period of 121 seconds.

I have an Asus A6Tc-AP014H laptop running Debian/Sid/x86_64.
The wifi card is:
03:03.0 Network controller: Broadcom Corporation BCM4318 [AirForce One
54g] 802.11g Wireless LAN Controller (rev 02)

The bug is in b43 driver. I tried both 2.6.24.X and 2.6.25-rc5 with old
and new v4 firmware.
There is no freeze with bcm43xx and v3 firmware.

At the beginning, I suspected my access point so I filled a bug report
at madwifi.org: http://madwifi.org/ticket/1791
I rewrite the testcase in this email:
 * ap$ nc -u client 2000 < /dev/zero
 * client$ nc -ul 2000 > /dev/null
 * rate: 1Mbps to maximize reliability
 * I read /proc/net/dev (column: Receive/bytes) every 100ms.
I also attach the result to this mail:
 * 1 vert px = 1000 bytes
 * 1 horz px = 100 ms
 * there is a green line every second
 * and a red one every minute
 * ~ 100 ko/s almost all the time

The bug is really annoying because it breaks most media streamings.

Regards,
JM

<<inline: testcase-1Mbps.png>>

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