praganj wrote: 
> On my pi4/4GB pCp player i have cpu isolation 0,3.
> 
> 0 is reserved for irq's and 3 for squeezelite.
> 
> Squezelite CPU is 3 and Squezelite output CPU is also 3, i am not doing
> oversampling.
> 
> Here are my squezelite options:
> 
> /usr/local/bin/squeezelite -n pi7 -o hw:CARD=SGD1,DEV=0 -a 160 4  1  -b
> 10000 20000 -p 45
> 
> When i am changing some squezelite parameters, than squezelite is
> restarted and i can see those errors:
> 
> [ INFO ] Stopping Squeezelite player: Squeezelite...
> 
> [ INFO ] Starting Squeezelite player: Squeezelite...
> taskset: invalid option -- 'c' BusyBox v1.31.1 (2020-12-18 22:25:41 EST)
> multi-call binary. Usage: taskset [-p] [HEXMASK] PID | PROG ARGS Set or
> get CPU affinity -p Operate on an existing PID taskset: invalid option
> -- 'c' BusyBox v1.31.1 (2020-12-18 22:25:41 EST) multi-call binary.
> Usage: taskset [-p] [HEXMASK] PID | PROG ARGS Set or get CPU affinity -p
> Operate on an existing PID taskset: invalid option -- 'c' BusyBox
> v1.31.1 (2020-12-18 22:25:41 EST) multi-call binary. Usage: taskset [-p]
> [HEXMASK] PID | PROG ARGS Set or get CPU affinity -p Operate on an
> existing PID taskset: invalid option -- 'c' BusyBox v1.31.1 (2020-12-18
> 22:25:41 EST) multi-call binary. Usage: taskset [-p] [HEXMASK] PID |
> PROG ARGS Set or get CPU affinity -p Operate on an existing PID
> 
> I have never seen this error in pCp 6.1 with identical configuration.
> 
> Any hint ?

I thought I tested the new busybox....guess I missed that(Likely will
need to wait until pCP7.1.  Not sure there is much of a reason to do
isolation on a pi4 anyway.   The theory before was related to the high
level of irqs due to the poor USB handling on the P0-3.  The pi4 has a
much more efficient USB and network chip.



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