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Hello,

As I would like to shape my traffic a bit I installed "Bandwidth and QoS Manager" from the Marketplace to ClearOS 7.5
I have a DSL connection with a speed of 51998/10448 Kbps (taken from the modem status). Download speeds that I measure with speedtest.net are at most 49700 /10150 Kbps, which I think is okay.

After installation of QoS, I did not change anything just using the default settings that put ping, ssh etc in the high priority groups.

What I do not understand: the moment I switch on the QoS engines all my up/downloads(even from the internet directly to the server) are limited at around 10000/10000 Kbps. Which leads me to believe that it is limited to 1/1Mbps. Yet the speed of the external interface is indeed set to 51998/10448Kbps.


  1. Is this to be expected?
  2. How can I make sure that the full bandwidth is utilised if it is freely available?
Saturday, January 05 2019, 10:16 AM
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  • Accepted Answer

    Saturday, January 05 2019, 10:52 AM - #Permalink
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    I've seen a number of reports indicating that QoS is slowing things down including a 1Gbps being slowed to somewhere between 100 and 200 Mbps. I suspect a bug somewhere. I know it is resource intensive but it does not explain why yours is so much slower that what I've seen elsewhere. What happens if you increase the speed settings through the IP settings screen?

    Also, what is the output of "lspck -k | grep Eth -A 3"?
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  • Accepted Answer

    Saturday, January 05 2019, 07:23 PM - #Permalink
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    I changed the speed set to: 151998 / 110448 kpbs and then QoS engine of or on does not have the limiting effect on the download speed.

    [root@mail ~]# lspci -k | grep Eth -A 3
    0b:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
    Subsystem: VMware Device 07d0
    Kernel driver in use: e1000e
    Kernel modules: e1000e
    13:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
    Subsystem: VMware Device 07d0
    Kernel driver in use: e1000e
    Kernel modules: e1000e
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  • Accepted Answer

    Saturday, January 05 2019, 09:39 PM - #Permalink
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    Hmm, VMware. I keep seeing speed issues with VMware. Recently IPsec running slowly. I don't know if it is VMware and if you can play around with different virtual NIC's. But note that I don't know if it is a VMware issue at all.
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