On Wed, Apr 14, 2021 at 2:39 PM Li RongQing <lirongqing@xxxxxxxxx> wrote: > > DPDK default burst size is 32, however, kernel xsk sendto > syscall can not handle all 32 at one time, and return with > error. > > So make kernel xdp socket batch size larger to avoid > unnecessary syscall fail and context switch which will help > increase performance. My apologies for the delay RongQing. I forgot to ack this for some reason. Your suggestion makes sense and will improve performance in other cases too. Thank you. Acked-by: Magnus Karlsson <magnus.karlsson@xxxxxxxxx> > Signed-off-by: Li RongQing <lirongqing@xxxxxxxxx> > --- > net/xdp/xsk.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c > index a71ed66..cd62d4b 100644 > --- a/net/xdp/xsk.c > +++ b/net/xdp/xsk.c > @@ -30,7 +30,7 @@ > #include "xdp_umem.h" > #include "xsk.h" > > -#define TX_BATCH_SIZE 16 > +#define TX_BATCH_SIZE 32 > > static DEFINE_PER_CPU(struct list_head, xskmap_flush_list); > > -- > 1.7.1 >
