Hi Pablo, On Tue, Dec 10, 2019 at 10:26:33PM +1100, Duncan Roe wrote: > pktb_usebuf() is a copy of pktb_alloc() with the first part modified to use > a supplied buffer rather than calloc() one. I thought this would give a > measurable performance boost and it does. > All the code after the memset() call is common to pktb_alloc(). If you like, > I can submit a v2 with this code in a static function called by both. > > Duncan Roe (1): > src: Add alternative function to pktb_alloc to avoid malloc / free > overhead > > include/libnetfilter_queue/pktbuff.h | 2 + > src/extra/pktbuff.c | 82 ++++++++++++++++++++++++++++++++++++ > 2 files changed, 84 insertions(+) > > -- > 2.14.5 > After a day or so of testing, it appears pktb_usebuf() saves 6% overall CPU over pktb_alloc() in a program similar to libnetfilter_queue/examples/nf-queue.c (but not printing every packet). The variance is quite high, so plus or minus 1%. Can supply more details of testing methodology if you want them. Overall I would say 6% is a worthwhile saving. What about it? Cheers ... Duncan.
