On Thu, Sep 04, 2003 at 08:26:39AM +0100, Gordan wrote: > Is it normal for a node without any bandwidth throttling with about 1 Mb of > symmetric bandwidth to max out at under 16 KB/s (1/8 of the actual available > bandwidth)? At first, for about an hour, the node will go and consume 100% of > the available bandwidth, then it will start to overload and slow down, and > very quickly reach a reasonably steady state at about 16 KB/s. This has been > observed on a dual 1 GHz P3 server. Quite frequently, the node will spike > it's CPU consumption to 100% (both CPUs), but most of the time it is using up > at least all of one CPU.
Bandwidth throttling is enabled by default at 16kB/second outbound. Please check that you have uncommented the line: outputBandwidthLimit=0 Otherwise, I have no idea... > > I have deliverately switched off bandwidth throttling to see if this was the > cause of the problem, and it would appear that it isn't. > > The number of threads and the routing time are on overload most of the time. That's probably something to do with it. > > This has been observed with unstable 6162, 6163 and 6167 on Linux, Sun's JVM > 1.4.2. 6168 seems to be doing slightly better but not by much. With 6162? So it's pre-ngrouting. Okay, that's a useful additional datapoint. > > Does anybody know where the bottleneck on this particular problem is? > Increasing the number of threads from 128 to 256 only seems to make the > problem worse, especially seen as after a while the cause of the overload > seems to be the routing time. > > The node will typically continue to chug along this way until it is restarted, > at which point the cycle seems to repeat, i.e. max out the bandwidth, then > after an hour or so fall back down to overload speeds. This problem is being actively worked on. > > Gordan -- Matthew J Toseland - [EMAIL PROTECTED] Freenet Project Official Codemonkey - http://freenetproject.org/ ICTHUS - Nothing is impossible. Our Boss says so.
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