On Thu, Jul 2, 2015 at 8:10 PM, Ermal Luçi <e...@freebsd.org> wrote:
> Author: eri > Date: Thu Jul 2 18:10:41 2015 > New Revision: 285051 > URL: https://svnweb.freebsd.org/changeset/base/285051 > > Log: > Avoid doing multiple route lookups for the same destination IP during > forwarding > > ip_forward() does a route lookup for testing this packet can be sent to > a known destination, > it also can do another route lookup if it detects that an ICMP redirect > is needed, > it forgets all of this and handovers to ip_output() to do the same > lookup yet again. > > This optimisation just does one route lookup during the forwarding path > and handovers that to be considered by ip_output(). > > Thanks, This bring good improvement regarding simple forwarding (value in paquet-per-second, smallest size, on a Netgate RCC-VE 4860): x r285046.pps.forwarding (IPSEC compiled but not used) + r285051.pps.forwarding (IPSEC compiled but not used) +--------------------------------------------------------------------------+ | +| |xxx xx + +++| ||_M_A__| | | |_A|| +--------------------------------------------------------------------------+ N Min Max Median Avg Stddev x 5 397733 406951 399300 401613.8 4324.9755 + 5 478095 482079 480869 480543.6 1666.0282 Difference at 95.0% confidence 78929.8 +/- 4779.72 19.6532% +/- 1.19013% (Student's t, pooled s = 3277.27) But how this patch reduce fastforwarding performance in the same time? x r285046.pps.fastforwarding (IPSEC compiled but not used) + r285051.pps.fastforwarding (IPSEC compiled but not used) +--------------------------------------------------------------------------+ | + + + + x x + x x x| | |__________________A_______M__________| | ||_________M______A________________| | +--------------------------------------------------------------------------+ N Min Max Median Avg Stddev x 5 742683 754709 750940 749015.6 4944.9059 + 5 736459 747593 738197 740112.4 4511.1611 Difference at 95.0% confidence -8903.2 +/- 6902.82 -1.18865% +/- 0.921585% (Student's t, pooled s = 4733) Regards, Olivier _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
