[Bridge] computer running bridge hangs when putting it under a high load

Wayback MachineAbout this captureCOLLECTED BY Organization: Alexa Crawls Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period. Collection: Alexa Crawls DE Crawl data donated by Alexa Internet. This data is currently not publicly accessible TIMESTAMPSloadingLennert Buytenhekbuytenh@gnu.org
Wed, 23 Aug 2000 02:45:15 +0200 (CEST)Hi,Heh.. I believe I was involved in setting this bridge up :)It sounds like marginal hardware. Can you try to put it under severenetwork stress without using the bridge code? For example: assign each NICa different subnet and run flood pings against it. This should tell youwhether the bridge code is involved or not. I guess in this case, it’snot.greetings,LennertPS Almost certainly, the realtek cards have nothing to do with this.On Tue, 22 Aug 2000, Kristian Rietveld wrote:> Hi all!>> At school we’ve got a computer running linux-2.2.16br-0.0.6 which bridges> some segments of the BNC network. When we wanted to test the performance> of the bridge (to check if it’s faster than 18 computers on a single> 10Mbit BNC cable… 🙂 we started w95 (we only have 486 computers with 16> MB RAM, I know it’s slow … ) on all machines, they succeeded to find the> network and to log in. The clients access the server (NetWare 4) on the> UTP network through the bridge (which has 5 BNC connections and one UTP).> After a succeeded log on, we started Word or WordPerfect (all applications> are installed on the server) on all 18 clients at the same time. This is a> very high load on the bridge, after 23 seconds the bridging computer hangs> _completely_, we had to reset it (fortunately, this computer has an ext3> filesystem :).>> About the configuration of the computer, it currently runs> linux-2.2.16br-0.0.6. It’s a P200, with 16 MB RAM. It has the following> NICs:> – 3 3com Etherlink III (ISA) (we use the BNC connection of these cards)> – 1 NE2000 (ISA) (BNC)> – 1 NE2K-PCI (Realtek) (BNC)> – 1 3com Fast Etherlink (Cyclone, 100Mbit) (UTP)>> I heard about hangs with bridges using RealTek cards, in most cases only> the bridge hangs, and not the whole computer. So I don’t think this is the> cause of the problem. During the ‘performance test’, we only used 4> network cards (1 UTP (3com Cyclone), 3 BNC, don’t know which ones, so the> RealTek one may have been unused :). The other 2 cards weren’t used, the> clients attached to those 2 segments weren’t installed yet…>> So, summarizing, the bridge runs nearly perfectly until a very high load> is put on it.>> I hope somebody has some clues…>>> Kris>>

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