Does anyone have experience with using PCQ Queue Type in Simple Queues?
Our clients report slowness issues the moment we enable the PQC Simple Queue on the LAN interface. The limitations are 16M down- and 2M upload without max-limit. Otherwise we are using the default settings which are set out of the box.
Firstly instead of limiting traffic on the port change the target to the lan subnet ie 192.168.88.0/24.
Secondly put the max-limit of your upload and download to the speeds that you are getting from the service provider so that your PCQ has a reference to work from.
Lastly create a simple queue above this queue for lan traffic. Target would be your lan subnet and destination your lan subnet to ensure lan to lan traffic is not shapped.
If you provide more information we can assistwith queues.
Thank you for your quick feedback. As advised I have now changed the Target and set the Up- and Download Limits. Regarding adding the additional Simple Queue: The clients are isolated from each other + no bridge has been configured on our MikroTik so I don’t expect that additional Queue to have any effect. Would increasing the KiB Limit and Total Limit of the Queue Types have a positive effect? The values atm. are Limit:50 KiB, Total Limit: 2000 KiB
I have found this nice entry about Queuing: https://wiki.mikrotik.com/wiki/Manual:Queue_Size
So basically, If I increase the Limit to much the client will have more latency rather than packet loss. However packet loss is good as it means the client is utilising the full Queue Speed limitation which is the end goal. I have increased the Total Limit by multiplying the max. host count with the Limit:
remember when you doing your calculations you then need to make sure you have enough ram. Lets say PCQ-TOTAL-LIMIT=x
RAM required = x*(2000Byte+200Byte) (2000Byte buffer for 1 packet. 200 Byte service data for 1 packet)
Ram required = 51100KiB*2.2 = 112420 Kib = <112.4 MB Ram required if you have 1022 people concurrently online at one time. It is covered under this page. http://forum.mikrotik.com/t/pcq-limit-total-limit-settings/12002/1 If you look at https://mum.mikrotik.com//presentations/US08/janism.pdf There is more detail.
how is your customers performance now.
Again, thank you for your feedback. I have recieved a few tickets and responded to everyone to provide me with a few more details like: Public IP they outbreak with (using whats my IP), a screen capture of a speedtest and a detailed description of the services they use and how they experience the slowness and cut offs. I will keep you posted.
