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Questions tagged [bufferbloat]

Bufferbloat is when excess buffering of packets causes high latency and jitter, as well as reducing the overall throughput.

Bufferbloat is a phenomenon in a packet-switched network when excess buffering of packets inside the network causes high latency and jitter, as well as reducing the overall network throughput.

Source: http://en.wikipedia.org/wiki/Bufferbloat

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Fixing bufferbloat in home network

In our home network, with continuous network IO happening latencies get ridiculous. It's fine with light loads but quickly becomes unusable if I'm, say, rsyncing a large number of small files, --other transfers essentially stop. Pings get through…
cuu508
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How to mitigate BufferBloat on an ADSL connection?

I've had interesting networking experience before. Before I moved, I've had a VDSL connection, with 3mb uplink. (The down speed was around 30mb but is not relevant at this moment). Whenever I saturated the uplink (CrashPlan backup), I could see a…
petr
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Is my router "clogged" after short time of heavy usage?

I have a cheap TP-Link TL-WR340G/TL-WR340GD router. I feel like after a short session of heavy downloading or uploading, it becomes "clogged". Websites do not respond, connections drop, etc. When I restart the router my internet is fine again, at…
rabbid
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Doing uploads from my windows 7 machine causes high ping time

Without a program doing uploads, my 64-bit Windows 7 laptop does great - 40 ms ping time, 5 MB download rate. If anything starts uploading (Dropbox, for instance), ping times suddenly increase over 2000 ms! Download rate, once a connection is…
eplictical
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router is slow to connect but downloads quickly

My router (pocket wifi 2 from vodafone AU) seems to download data quickly enough (1Mbps) but it takes ages (10-20 seconds) to connect to the requested site first. All devices using this router have the same experience. Any idea about what/where the…
Ryan Fernandes
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Using traffic shaping, is limiting download traffic helpful or harmful?

I use traffic shaping in MonoWall (BSD) to great advantage with my home connection. It has been quite some time since I've had any kind of issues where user interaction with the internet has seen any annoyance caused by anything on the local…
killermist
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Is bufferbloat caused by low upstream

Right now I have ADSL2+ connection at my home, and an old router that doesn't support any SQM algorithms. This is limitations of my internet set by ISP : I can't do video calls at all and suffer playing video games. I think the problem is caused by…
user19853537
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How do I fix bufferbloat without introducing packet loss?

I just installed SQM QoS on my Linksys E4200 (V2) in order to fix some, frankly, horrendous bufferbloat. This seems to have fixed the issue, however, it has now introduced bad packet loss that wasn't there before. P.S - make any replies easy for a…
Climatee
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High bufferbloat on OpenWrt LEDE router. Why?

Bufferbloat is a flaw found in many routers. Bufferbloat causes considerably increased latency and network slowdown when there is other traffic on your network that uses the router. Third-party router firmware such as the latest version of OpenWrt…
Ash90
  • 35
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How to configure QoS/SQM with SRA (seamless rate adaptation) on OpenWrt

Recently my ISP changed my DSL-line from fixed rate to SRA. This allows the modem to adapt the speed of the internet to the quality of the line instead of completely breaking down (my ISP is not interested into repairing the line so he introduced…
H. Idden
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Ping isn't acting accurate?

I've been trying to diagnose some latency issues with my internet connection. I've been lagging out of online video games and such, which of course could be their server's fault. So, I've been running ping some. It doesn't indicate anything…
Earlz
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Explicit Congestion Notification (ECN), Why isn't the notification done by the Router?

Quoting from Wikipedia: "When both endpoints support ECN they mark their packets with ECT(0) or ECT(1). Routers treat the ECT(0) and ECT(1) codepoints as equivalent. If the packet traverses an active queue management (AQM) queue (e.g., a queue that…
ConventionalProgrammer
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Setup new router with SQM - Buffer Bloating solution

Scenario. I'm in Tbilisi, Georgia. I have very high ping to EU servers (100ms+) plus a huge buffer bloating problem, this test gave me the F rank: https://www.waveform.com/tools/bufferbloat I use an optical Fiber connection, 100 Mbps from Magti ISP,…
MrVerde
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Can you suffer bufferbloat when using only 1/4th of your bandwidth?

As the title suggests, is it possible to have bufferbloat without hitting your max download or upload speeds (on Ethernet)? I have recently moved into a new house and asked for the internet to be upgraded to 250/40 package which speedtest shows is…
Sam
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Network scheduler not effective with non-status reporting bandwidth allocation

I was recently introduced to concepts like sqm, bufferbloat and network schedulers or queueing disclipines like cake, fq_codel etc. # tc -d qdisc qdisc noqueue 0: dev lo root refcnt 2 qdisc mq 0: dev eth0 root qdisc fq_codel 0: dev eth0 parent :1…
dza
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