On Mon 18-03-19 14:02:09, Pankaj Suryawanshi wrote: >> > I have the system(vanilla kernel) with 2GB of RAM, reserved 1GB for CMA. >> > No swap or zram. >> > Sorry, I don't have information where the time is spent. >> > time is calculated in between cma_alloc call. >> > I have just cma_alloc trace information/function graph. > >> Then please collect that data because it is really hard to judge >> anything from the numbers you have provided. > > Any pointers from which i can get this details ?
I would start by enabling built in tracepoints for the migration or use a system wide perf monitoring with call graph data. -- Michal Hocko SUSE Labs
