On Fri, Jan 27, 2006 at 12:16:02PM -0800, Andrew Morton wrote:Ravikiran G Thirumalai <kiran@xxxxxxxxxxxx> wrote:which can be assumed as not frequent. At sk_stream_mem_schedule(), read_sockets_allocated() is invoked only certain conditions, under memory pressure -- on a large CPU count machine, you'd have large memory, and I don't think read_sockets_allocated would get called often. It did not atleast on our 8cpu/16G box. So this should be OK I think.That being said, the percpu_counters aren't a terribly successful concept
and probably do need a revisit due to the high inaccuracy at high CPU
counts. It might be better to do some generic version of vm_acct_memory()
instead.
AFAICS vm_acct_memory is no better. The deviation on large cpu counts is the same as percpu_counters -- (NR_CPUS * NR_CPUS * 2) ...