Hi Ben, Sorry for the late reply. > This is on the 400 station test machine. No more crashes, but I'm seeing long > pauses (10+ seconds) when trying to down station interfaces (and sometimes other > commands as well). The system cannot stabilize (my user-space app times out > after a while due to blocking on system() calls such as the one below, > and gives up, causing endless loops of up/down, associate, dhcp, etc) > I'm going to tweak the user-space code more to try to bring up stations > in smaller batches, but it still seems like there is room for improvement > in the OS. > > Using sysrq, I got this trace of the command. I'm not sure it was blocked > in the same place the whole time, but it seems likely. Any ideas for how > to speed this sort of thing up? > > ./local/sbin/ip link set sta140 down > > [<ffffffff81070e2e>] flush_work+0x2b/0x34 > [<ffffffff8106f857>] ? cwq_dec_nr_in_flight+0x76/0x76 > [<ffffffffa026a673>] ieee80211_do_stop+0x379/0x544 [mac80211] I'm guessing that the other interfaces are actually re-scheduling work items while this is trying to flush ... I'm not really sure how to improve this behaviour though. johannes -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
