Hi, I'm running an acquisition system @1KHz sampling frequency (27 bytes/sample) with libiio as interface between the application and the IIO driver (SPI based). The network and local context are working as expected. However, the system have some data loss at SPI level (confirmed by scope) even if the data is not pushed to the buffer (iio_push_to_buffers). The scope show that every 1.4 sec (aprox), the handler is not called. It seem other process is taking priority over this. I'm trying to find the process that is taking over the SPI/IRQ handlers. - My system is running in ext4 (on SD) and maybe this could be the problem (journal)? - Implement a RT and review interrupt context as suggested by Xander (http://marc.info/?l=linux-iio&m=143933412720586&w=2)? - I would like to implement a DMA buffer as suggested by Lars (two month ago) but I'm not sure this will help in this case (http://marc.info/?l=linux-iio&m=144475305426138&w=2), for now. In any case, any advice to address this problem is welcome. Thanks -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
