netstacklat: experiment with disabling nth-filter

name netstacklat_tcp_recv_timestamp
 - run_time_ns 24383044912 run_cnt 121125888 = 201.30 ns

Compared to
 - nth-2  : 186 ns -> +15 ns
 - nth-4  : 173 ns -> +28 ns
 - nth-32 : 157 ns -> +44 ns

Signed-off-by: Jesper Dangaard Brouer <hawk@kernel.org>

Author: netoptimizer

examples/netstacklat.bpf.c

@@ -29,7 +29,7 @@ const __s64 TAI_OFFSET = (37LL * NS_PER_S);
 const struct netstacklat_bpf_config user_config = {
 	.network_ns = 0,
 	.filter_min_queue_len = 0, /* zero means filter is inactive */
-	.filter_nth_packet = 4, /* reduce recorded event to every nth packet, use power-of-2 */
+	.filter_nth_packet = 0, /* reduce recorded event to every nth packet, use power-of-2 */
 	.filter_pid = false,
 	.filter_ifindex = true,
 	.filter_cgroup = true,