Searched hist:afb84b6261841f8ab387e267e748236fa805bea0 (Results 1 – 1 of 1) sorted by relevance
| /openbmc/linux/net/core/ |
| H A D | pktgen.c | diff afb84b6261841f8ab387e267e748236fa805bea0 Thu Aug 28 11:14:47 CDT 2014 Jesper Dangaard Brouer <brouer@redhat.com> pktgen: add flag NO_TIMESTAMP to disable timestamping
Then testing the TX limits of the stack, then it is useful to
be-able to disable the do_gettimeofday() timetamping on every packet.
This implements a pktgen flag NO_TIMESTAMP which will disable this
call to do_gettimeofday().
The performance change on (my system E5-2695) with skb_clone=0, goes
from TX 2,423,751 pps to 2,567,165 pps with flag NO_TIMESTAMP. Thus,
the cost of do_gettimeofday() or saving is approx 23 nanosec.
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|