Hi Daniel, (I feel like a one-trick pony here, but...) Could this be bufferbloat? Maybe not, but here's how to test:
Use the procedure for "A Quick Test for Bufferbloat" at https://www.bufferbloat.net/projects/cerowrt/wiki/Tests_for_Bufferbloat/#a-quick-test-for-bufferbloat Watch to see if the ping times increase during download/uploads then drop back down. If the ping times do increase, consider installing luci-app-sqm as suggested on https://www.bufferbloat.net/projects/cerowrt/wiki/What_to_do_about_Bufferbloat/ Best regards, Rich > On Aug 4, 2016, at 3:10 PM, Daniel Niasoff <dan...@redactus.co.uk> wrote: > > Hi Donald, > > Thanks for responding > > The MTU seems fine. > > This is the WAN link > > pppoa-wan Link encap:Point-to-Point Protocol > inet addr:2.25.173.155 P-t-P:172.16.11.136 Mask:255.255.255.255 > UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1 > RX packets:94409 errors:0 dropped:0 overruns:0 frame:0 > TX packets:85742 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:3 > RX bytes:75750172 (72.2 MiB) TX bytes:14369708 (13.7 MiB) > > I sent a 1492 byte icmp request externally which got through. > > root@ubuntu:~# ping -s 1464 2.25.173.155 > PING 2.25.173.155 (2.25.173.155) 1464(1492) bytes of data. > 1472 bytes from 2.25.173.155: icmp_seq=1 ttl=57 time=49.4 ms > ^C > --- 2.25.173.155 ping statistics --- > 1 packets transmitted, 1 received, 0% packet loss, time 0ms > rtt min/avg/max/mdev = 49.439/49.439/49.439/0.000 ms > > So MTU looks fine. > > Thanks > > Daniel > > From: Donald Chisholm [mailto:donald.chish...@gmail.com] > Sent: 04 August 2016 19:41 > To: Daniel Niasoff <dan...@redactus.co.uk> > Subject: Re: [OpenWrt-Devel] latency on PPPoA ADSL Annex A on using Lantiq > > Hi Daniel, > > I just saw your message on the LEDE mailing list. The freezing and catching > up sounds like a MTU problem. Could there be a MTU mismatch on the ADSL > interface (1500 <->1492)? > > Donald > > On Thu, Aug 4, 2016 at 6:47 AM, Daniel Niasoff <mailto:dan...@redactus.co.uk> > wrote: > Hi, > > I am quite desperate because I have a project going with these routers and I > am running really late. > > Can anyone spare some time to help me, I am willing to pay an hourly rate for > the time if it will help. > > This issue only occurs on ADSL. On VDSL performance is really good even using > PPPoE. > > The issue is a sluggish access to the CPU interface via ADSL, so for example > if you are typing in a SSH client, it will keep freezing for a second or two, > than catch up. > > Routed traffic is fine. > > Thanks > > Daniel > > -----Original Message----- > From: Martin Blumenstingl [mailto:mailto:martin.blumensti...@googlemail.com] > Sent: 03 August 2016 08:03 > To: Alexander Couzens <mailto:lyn...@fe80.eu> > Cc: Daniel Niasoff <mailto:dan...@redactus.co.uk>; > mailto:openwrt-de...@lists.openwrt.org; mailto:lede-dev@lists.infradead.org; > mailto:ha...@hauke-m.de; mailto:j...@phrozen.org > Subject: Re: [OpenWrt-Devel] latency on PPPoA ADSL Annex A on using Lantiq > > On Tue, Aug 2, 2016 at 6:10 PM, Alexander Couzens <mailto:lyn...@fe80.eu> > wrote: >> On Tue, 2 Aug 2016 13:38:55 +0000 >> Daniel Niasoff <mailto:dan...@redactus.co.uk> wrote: >> >>> I can provide remote ssh access if required. When using SSH you will >>> notice it feels sluggish due to this issue. >>> >>> Any ideas pleeeease, I am really stuck here? >> >> I can confirm your problem with PPPoE on ADSL. Also noticed high >> latency on ssh connection through the router. >> I guess it's not in the DSL part, because when using the TD8970 as >> modem with pass through everything is fine. > someone else did performance/throughput testing on the HH5A, the results are > posted here: [0] > > I did not have time to look into this yet, but maybe Hauke or John have an > idea what's going on. > > > [0] http://openwrt.ebilan.co.uk/viewtopic.php?f=7&p=1189 > _______________________________________________ > openwrt-devel mailing list > mailto:openwrt-de...@lists.openwrt.org > https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel > > _______________________________________________ > Lede-dev mailing list > Lede-dev@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/lede-dev _______________________________________________ Lede-dev mailing list Lede-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/lede-dev
