pktgen: Pregenerate 3/4 of the ifq_maxlen should be enough

diff --git a/tools/tools/netrate/pktgen/pktgen.c b/tools/tools/netrate/pktgen/pktgen.c
index 1c5c0d9..ff37b07 100644 (file)
--- a/tools/tools/netrate/pktgen/pktgen.c
+++ b/tools/tools/netrate/pktgen/pktgen.c
@@ -355,7 +355,7 @@ pktgen_start(struct pktgen *pktg)
                lwkt_migratecpu(cpuid);
 
        alloc_cnt = ifp->if_snd.ifq_maxlen * 2;
-       keep_cnt = (ifp->if_snd.ifq_maxlen * 7) / 8;
+       keep_cnt = (ifp->if_snd.ifq_maxlen * 3) / 4;
 
        /*
         * Prefault enough mbuf into mbuf objcache