Hello, 27/01/2014 03:56, Sangjin Han: > Cause: No probed ethernet devices - check that > CONFIG_RTE_LIBRTE_IGB_PMD=y and that CONFIG_RTE_LIBRTE_EM_PMD=y and > that CONFIG_RTE_LIBRTE_IXGBE_PMD=y in your configuration file [...] > I googled for possible causes and came across a similar case: > http://openetworking.blogspot.com/2014/01/debugging-no-probed-ethernet-devi > ces.html [...] > msec_delay(4); [...] > I think /proc/cpuinfo is not a reliable way to get > eal_tsc_resolution_hz, since it varies based on the current CPU clock > frequency. Enforcing applications to run at the max frequency can be > too restrictive.
Indeed, as described in the quick start page, the highest frequency must be set: http://dpdk.org/doc/quick-start > It would be nice if I can bypass set_tsc_freq_from_cpuinfo() in > set_tsc_freq(). I think it would not solve the problem because your clock is varying and the TSC calibration must be updated accordingly with different values by core. Feel free to submit a patch if you find a smart solution. -- Thomas
