high CPU usage in FreeBSD for a PCIe card driver

[Andrew Gallatin]

On 06/28/18 12:44, Steevan Rodrigues wrote:
 > Thank you so much for the suggestions .  I will use these commands.
 > Yes, I am already working on to identify lock contentions.
 >
 > Re-built FreeBSD kernel by enabling lock profiling and  now I am able to
 > see some issues with contention.
 >
 > Thanks
 > Steevan


You need-not rebuild freebsd.  lockstat is based on dtrace..

The lock profiling you're referring to is a different mechanism.

Drew