After taking the send-credit patch out of the test tree, I performed successful test runs on two different days/revisions of the netdev tree: problem seems fixed. With the simple bi-directional TBF filter, the throughput with CCID3 is about 920 ... 950 Kbps when running for 20 seconds. There is one observation regarding the byte-blast mode of iperf: I found that this overran the queue and frequently got messages such as below -- if anyone would like to use the calculator on this, feel free, but in all cases it was due to * P.seqno > S.SWH and * P.ackno does not exist (DATA packet) I also got complaints about `bogus Acks' (CCID3), likely due to the same problem. On the other hand, when using CBR mode, these over-runs do not happen: iperf -c dccpServer -dt40 -b10m # 40seconds of 10Mbps Gerrit Server log, forward direction: ------------------------------ DCCP: Step 6 failed for DATA packet, (LSWL(273602819099821) <= P.seqno(273602819099923) <= S.SWH(273602819099920)) and (P.ackno doesn't exist or LAWL(273601871614449) <= P.ackno(1125899906842620) <= S.AWH(273601871614453) DCCP: Step 6 failed for DATA packet, (LSWL(273602819099821) <= P.seqno(273602819099966) <= S.SWH(273602819099920)) and (P.ackno doesn't exist or LAWL(273601871614449) <= P.ackno(1125899906842620) <= S.AWH(273601871614454) DCCP: Step 6 failed for DATA packet, (LSWL(273602819099821) <= P.seqno(273602819100001) <= S.SWH(273602819099920)) and (P.ackno doesn't exist or LAWL(273601871614449) <= P.ackno(1125899906842620) <= S.AWH(273601871614454) DCCP: Step 6 failed for DATA packet, (LSWL(273602819099821) <= P.seqno(273602819100056) <= S.SWH(273602819099920)) and (P.ackno doesn't exist or LAWL(273601871614449) <= P.ackno(1125899906842620) <= S.AWH(273601871614454) DCCP: Step 6 failed for DATA packet, (LSWL(273602819099821) <= P.seqno(273602819100112) <= S.SWH(273602819099920)) and (P.ackno doesn't exist or LAWL(273601871614449) <= P.ackno(1125899906842620) <= S.AWH(273601871614454) DCCP: Step 6 failed for DATA packet, (LSWL(273602819099821) <= P.seqno(273602819100162) <= S.SWH(273602819099920)) and (P.ackno doesn't exist or LAWL(273601871614449) <= P.ackno(1125899906842620) <= S.AWH(273601871614454) DCCP: Step 6 failed for DATA packet, (LSWL(273602819099821) <= P.seqno(273602819100209) <= S.SWH(273602819099920)) and (P.ackno doesn't exist or LAWL(273601871614449) <= P.ackno(1125899906842620) <= S.AWH(273601871614454) DCCP: Step 6 failed for DATA packet, (LSWL(273602819099821) <= P.seqno(273602819100245) <= S.SWH(273602819099920)) and (P.ackno doesn't exist or LAWL(273601871614449) <= P.ackno(1125899906842620) <= S.AWH(273601871614454) DCCP: Step 6 failed for DATA packet, (LSWL(273602819099821) <= P.seqno(273602819100245) <= S.SWH(273602819099920)) and (P.ackno doesn't exist or LAWL(273601871614449) <= P.ackno(1125899906842620) <= S.AWH(273601871614454) DCCP: Step 6 failed for DATA packet, (LSWL(273673852364422) <= P.seqno(273673852364539) <= S.SWH(273673852364521)) and (P.ackno doesn't exist or LAWL(273676471573601) <= P.ackno(1125899906842620) <= S.AWH(273676471573605) DCCP: Step 6 failed for DATA packet, (LSWL(273673852364422) <= P.seqno(273673852364569) <= S.SWH(273673852364521)) and (P.ackno doesn't exist or LAWL(273676471573601) <= P.ackno(1125899906842620) <= S.AWH(273676471573606) DCCP: Step 6 failed for DATA packet, (LSWL(273673852364422) <= P.seqno(273673852364575) <= S.SWH(273673852364521)) and (P.ackno doesn't exist or LAWL(273676471573601) <= P.ackno(1125899906842620) <= S.AWH(273676471573606) DCCP: Step 6 failed for DATA packet, (LSWL(273673852364422) <= P.seqno(273673852364576) <= S.SWH(273673852364521)) and (P.ackno doesn't exist or LAWL(273676471573601) <= P.ackno(1125899906842620) <= S.AWH(273676471573606) DCCP: Step 6 failed for DATA packet, (LSWL(273673852364422) <= P.seqno(273673852364597) <= S.SWH(273673852364521)) and (P.ackno doesn't exist or LAWL(273676471573601) <= P.ackno(1125899906842620) <= S.AWH(273676471573606) DCCP: Step 6 failed for DATA packet, (LSWL(273673852364422) <= P.seqno(273673852364598) <= S.SWH(273673852364521)) and (P.ackno doesn't exist or LAWL(273676471573601) <= P.ackno(1125899906842620) <= S.AWH(273676471573606) DCCP: Step 6 failed for DATA packet, (LSWL(273673852364422) <= P.seqno(273673852364628) <= S.SWH(273673852364521)) and (P.ackno doesn't exist or LAWL(273676471573601) <= P.ackno(1125899906842620) <= S.AWH(273676471573606) Server log, reverse direction: ------------------------------ DCCP: Step 6 failed for DATA packet, (LSWL(275987611322943) <= P.seqno(275987611323059) <= S.SWH(275987611323042)) and (P.ackno doesn't exist or LAWL(275987333710677) <= P.ackno(1125899906842620) <= S.AWH(275987333710679) DCCP: Step 6 failed for DATA packet, (LSWL(275987611322943) <= P.seqno(275987611323159) <= S.SWH(275987611323042)) and (P.ackno doesn't exist or LAWL(275987333710677) <= P.ackno(1125899906842620) <= S.AWH(275987333710680) DCCP: Step 6 failed for DATA packet, (LSWL(275987611322943) <= P.seqno(275987611323258) <= S.SWH(275987611323042)) and (P.ackno doesn't exist or LAWL(275987333710677) <= P.ackno(1125899906842620) <= S.AWH(275987333710680) DCCP: Step 6 failed for DATA packet, (LSWL(275987611322943) <= P.seqno(275987611323351) <= S.SWH(275987611323042)) and (P.ackno doesn't exist or LAWL(275987333710677) <= P.ackno(1125899906842620) <= S.AWH(275987333710680) DCCP: Step 6 failed for DATA packet, (LSWL(275987611322943) <= P.seqno(275987611323450) <= S.SWH(275987611323042)) and (P.ackno doesn't exist or LAWL(275987333710677) <= P.ackno(1125899906842620) <= S.AWH(275987333710680) DCCP: Step 6 failed for DATA packet, (LSWL(275987611322943) <= P.seqno(275987611323543) <= S.SWH(275987611323042)) and (P.ackno doesn't exist or LAWL(275987333710677) <= P.ackno(1125899906842620) <= S.AWH(275987333710680) DCCP: Step 6 failed for DATA packet, (LSWL(275987611322943) <= P.seqno(275987611323642) <= S.SWH(275987611323042)) and (P.ackno doesn't exist or LAWL(275987333710677) <= P.ackno(1125899906842620) <= S.AWH(275987333710680) DCCP: Step 6 failed for DATA packet, (LSWL(275987611322943) <= P.seqno(275987611323735) <= S.SWH(275987611323042)) and (P.ackno doesn't exist or LAWL(275987333710677) <= P.ackno(1125899906842620) <= S.AWH(275987333710680) DCCP: Step 6 failed for DATA packet, (LSWL(275987611322943) <= P.seqno(275987611323795) <= S.SWH(275987611323042)) and (P.ackno doesn't exist or LAWL(275987333710677) <= P.ackno(1125899906842620) <= S.AWH(275987333710680) - To unsubscribe from this list: send the line "unsubscribe dccp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at 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