Hi all, Im trying to measure DMA performance over pcie. We dont have any counters in our hardware which shows per second data rate values. I'm trying to measure performance by taking kernel timestamps using ktime_get(), but for transferring 'n' bytes data i'm always getting inconsistent time difference, im taking timestamps before and after transferring data(latter timestamp taken when transfer complete interrupt comes). Is is good method to measure performance with software timestamps ? I need help in what would be better way to measure performance when we dont have hardware counters. what are the kernel provided better timestamping calls other that ktime_get and do_gettimeoftheday, which are more stable ? Thanks & Regards, Valmiki -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
