[LEDE-DEV] Using older kernel in 17.01.4

[Eric Luehrsen]

Hi Nishant -

As a possible alternate solution...

If you don't need the curvature feature of HFSC, then HTB will work just 
as well. It handles the hierarchy and bandwidth sharing. Some may 
express concern HTB is slower at high bandwidths. This isn't entirely 
true. The HTB parameters "burst" and "cburst" are the bucket(s). These 
two parameters need to be sized to hold about 0.5 [ms] of flow (or min. 
MTU+10%). Otherwise, each time the bucket is empty a software interrupt 
occurs. With whatever the router needs to do, this can hurt throughput. 
You can look at the sqm-scripts github history 
[https://github.com/tohojo/sqm-scripts] for some of the discussions 
comparing the different shapers.

- Eric

On 11/24/2017 12:43 AM, Nishant Sharma wrote:
> Hi,
>
> The bug in HFSC and SCH is big issue for us as we can't do QoS 
> reliably. I had to rollback to OpenWrt 15.05.1 in order to resolve the 
> issue.
>
> Is there a way where I could specify an older kernel version while 
> building the firmware using source of 17.01.4?
>
> Thanks in advance for pointers.
>
> Regards,
> Nishant