[Cerowrt-devel] performance numbers from WRT1200AC (Re: Latest build test - new sqm-scripts seem to work; "cake overhead 40" didn't)

Sebastian Moeller moeller0 at gmx.de
Mon Jun 29 04:10:14 EDT 2015

HI Mikael,

On Jun 29, 2015, at 09:54 , Mikael Abrahamsson <swmike at swm.pp.se> wrote:

> On Mon, 29 Jun 2015, Sebastian Moeller wrote:
>> 	Good work-around; not a real solution as sqm_logger() will also add "SQM:”. I think the solution most likely is to remove line 155 completely. But weirdly this seems to work with cerowrt…

	Correction, calling logger with an empty string works on cero (as well as on openwrt), but passing an empty string to sqm_logger results in the observed bug, so I can reproduce this locally.

> May I suggest a wrapper around the logger part that handles this case, ie if the string is empty? Because when the string is empty and it gets stuck, luci just waits and waits and waits. I mean, this specific case can be fixed, but for the future it would be more robust if this error case can't happen at all.
> -- 
> Mikael Abrahamsson    email: swmike at swm.pp.se

I had a look at sqm_logger():
sqm_logger() {
    logger -t SQM -s ${1}

and hope that
sqm_logger() {
    logger -t SQM -s "${1}”

Fixes the issue for me and is more concise than trying to introduce real error handling in sqm_logger. Does this also work for you?

Best Regards

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