Lockups with SMP
jiri.fojtasek at hlohovec.net
Fri Jun 27 16:05:34 EDT 2003
Jirka Bohac wrote:
>>I am just wondering if there is any progress on lockups involving SMP
>>then followed by "hostap_pci: wlan0: resetting card", then nothing.
>This obviously is not just a SMP issue. We have the same problems on
>uniprocessor machines. Some people have more luck with fast computers,
>slower ones (like my P100) seem to suffer more.
>My explanation to this is, that there is some locking problem (either
>insufficient locking or a deadlock) and, on the fast computer, the first
>of the conflicting events is likely to be finished before it is
>interrupted by the second... ???????
>Upgrading to hostap-0.0.3 increased the average uptime significantly,
>most likely because card resets occur much less frequently than with
>previous versions. For the same reason, upgrading to the latest (1.5.6)
>Now my system "only" hangs about once every other day.
>I have 3 ZCOM XI-626 cards, each of them under permanent load of about
>100-300kB/s. One of them is in managed mode, the other two are masters.
>If I can do anything to help solve this issue, I will try - it's a major
>problem for many in our network.
>CZFree.Net, Prague, Czechia
>HostAP mailing list
>HostAP at shmoo.com
IMHO i think XI-626 need a PCI revision 2.1 or 2.2 ? Iam using a boards
that pass PCI revision requirements and not have those problems (d-com
and sparklan wl-360, avreage 10-15 associated clients) . In some routers
iam also using low cost motherboards (with via C3 on board) with no
problems ... IMHO maybe coming time turn off old p100 router and
upgrade it, to pass basic PCI bus requirements with the wlan card ... I
using my own patch to solve BAP busy timeouts, maybe its a goal or me
(from pre 0.0.1 to current 0.0.3) ...
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