From 5d8d096fc0db68e7f62e9ae0e24f65694e09ed41 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Sun, 3 Jun 2018 21:57:20 +1000 Subject: Use 6 for echo/send delay seems to be the best value for performance Signed-off-by: Benjamin Herrenschmidt --- cf-fsi-test.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'cf-fsi-test.c') diff --git a/cf-fsi-test.c b/cf-fsi-test.c index d27074e..65c240c 100644 --- a/cf-fsi-test.c +++ b/cf-fsi-test.c @@ -659,7 +659,9 @@ int main(int argc, char *argv[]) dump_stuff(); printf("old smode: %08x\n", val); -#define ECHO_SEND_DELAY 2 + /* 6 seems to be the "sweet spot" for performance */ +#define ECHO_SEND_DELAY 6 + /* Change it to 2,2 */ val = FSI_SMODE_WSC | FSI_SMODE_ECRC | fsi_smode_echodly(ECHO_SEND_DELAY - 1) -- cgit v1.2.1