Thanks Cliff. Ya, I have tried fromdevice, and it gave worse performance. I think Queue should be a very mature element, and there should not be a bug there. But the experiment results told me that something got wrong. Should I use a thread safe queue instead of queue, when I use multithreads?
Thanks Bingyang Sent from my iPhone On Dec 4, 2011, at 12:31 AM, Cliff Frey <cl...@meraki.com> wrote: > You could try FromDevice instead of PollDevice. I'd expect that it would > work fine. If it is not high performance enough, it would be great if you > should share your performance numbers just to have another datapoint. > > I doubt that Queue has a bug, you could try latest click sources though just > in case. As for finding/fixing any polldevice issues, I don't have anything > to help you there... > > Cliff > > On Sat, Dec 3, 2011 at 8:49 PM, Bingyang LIU <bjorn...@gmail.com> wrote: > Hi Cliff, > > Thank you very much for your help. I followed your suggestion and got some > results. > > 1. It turned out that "PollDevice" failed to get all the packets from NIC, > even if the packet sending rate is only 200kpps with the packet size of 64B. > 2. I used "grep . /click/.e/*/drops", all of them reported 0 drops. > 3. I put a counter between every two connected elements, to determine which > element dropped packet. Finally I found a queue dropped packets, because the > downstream counter reported less "count" than the upstream one. However, it > was straight that this queue still reported 0 drops. I think there might be > some bug with the element, or I mis-used the elements. > > So I have two questions. First, how can I make PollDevice work better, which > means that it won't drop packets at low rate. (Should I use Stride > Scheduler?) Second, is there any bug with Queue in Click 1.8.0, in terms of > dropping packets without reporting the drops? > > My experiment environment and configuration: > * Hardware: CPU Inter Xeon X3210 (quad core at 2.13Ghz), 4GB RAM. (a server > on deterlab) > * Software: Ubuntu8.04 + Click1.8, with PollDevice and multi-thread enabled. > * Configuration: ./configure --with-linux=/usr/src/linux-2.6.24.7 > --enable-ipsec --enable-warp9 --enable-multithread=4 > * Installation: sudo click-install --thread=4 site7_router1.click > > thanks! > best > Bingyang > > On Sat, Dec 3, 2011 at 12:42 PM, Cliff Frey <cl...@meraki.com> wrote: _______________________________________________ click mailing list click@amsterdam.lcs.mit.edu https://amsterdam.lcs.mit.edu/mailman/listinfo/click
