Hello,
my application continuously sends 64 bytes CANFD packets with 1MBit/s at
the 10ms interval. I use tcan4450 on the RPI4 with 5.10.103 Kernel and
raspbian. No other significant processes load the CPU.
When I monitor the traffic with a PCAN adapter on a Windows PC, I notice
that the packets sometimes arrive with a delay of 5-9ms. But the next
following packet arrive faster as 10ms. My desired interval of 10ms is
kept at the jitter of +/- 9ms.
Running the App on only one CPU core using tasksel improve the jitter
somewhat.
Am I the only one who observes such large jitter or is the m_can
implementation at Perepherie (spi) not so fast from the throughput and
is completely normal.
Maybe I should switch to 5.17 kernel? On 5.17 there are bulk read/write
function for spi regmap.
Thanks and Best Regards,
Michael Anochin
