On Thursday, April 19, 2012 4:46:22 pm Luigi Rizzo wrote: > What might be moderately expensive are the critical_enter()/critical_exit() > calls around individual allocations. > The allocation happens while the code has already an exclusive > lock on so->snd_buf so a pool of fresh buffers could be attached > there.
Keep in mind that in the common case critical_enter() and critical_exit() should be very cheap as they should just do td->td_critnest++ and td->td_critnest--. critical_enter() should probably be inlined if KTR is not enabled. -- John Baldwin _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
