Forum Discussion

smithy01793's avatar
smithy01793
On our wavelength
10 months ago

1Gig Hub5 Reducing buffer bloat

Howdy all hope everyone is well

So as the Subject says i am getting a lot of buffer bloat on mt hub5

Firstly Info for you- Using the 2.5 gig port (Hub5) to my10gig network port on my pc,

Have performed standard checks and tests however i can not seem to reduce the buffer bloat at the Hubs end,

Even gone as far as have only 1 device on there my wired pc and doing multipole Downloads - uploads in this config, Burst Dl,s and ul.s  and single bigger files in both directs and a mix of files big small in both directions as well.

Latency Performance - Idel Average 20-53ms . Download Average 197-244ms. Upload 23-29ms 

Every time getting a Result of  F ,Context on this result is monitoring the results A to F, 

A-best possible F-Worst Possible.

Running latest firmware that i am aware of at this time for the Hub5.7.6.15-2306.5 

 

  • legacy1's avatar
    legacy1
    Alessandro Volta

    Depending on who says what and how you may not like the answer

     

    So can you do something about buffer bloat the answer is yes but also no

    VM has limited bandwidth to which you may not always hit your upto speed which the problem amplified by your fast upto.

    Can you do anything about bufferbloat IF bandwidth is available on the network YES simple buy a QoS/BWM router and rate limit for 1Gb port 900Mb download and 99Mb upload or on 2.5Gb port 1100Mb down and 99Mb up. For the download QoS/BWM to work it necessary to limit under your max speed for the QoS/BWM to work.

    But what happens IF bandwidth is not available on the network to give you your full speed? This can depending on the area QoS/BWM used that your own QoS/BWM will not see in order for it to control the limit and so you buffer bloat never hitting your upto speed.

  • Sephiroth's avatar
    Sephiroth
    Alessandro Volta

    Even I understood Legacy's reply this time.  He has made two very good points.  If I were you, I would focus on his 'NO' point first.  In other words, is the VM circuit delivering your full bandwidth, particularly at peak times?

  • If you have a 2.5gig connection then the rj45 cable and pc network card must also be 2.5gig.

    Your pc is looking for a 10gig connection and not getting it.