netdev - Re: [PATCH net] selftests: bonding: Add more missing config options

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Date: Tue, 16 Jan 2024 11:43:09 -0800
From: Jay Vosburgh <jay.vosburgh@...onical.com>
To: Jakub Kicinski <kuba@...nel.org>
cc: Benjamin Poirier <bpoirier@...dia.com>,
    Hangbin Liu <liuhangbin@...il.com>, netdev@...r.kernel.org,
    Andy Gospodarek <andy@...yhouse.net>, Shuah Khan <shuah@...nel.org>,
    "David S. Miller" <davem@...emloft.net>,
    Jonathan Toppins <jon.toppins+linux@...il.com>,
    Nikolay Aleksandrov <razor@...ckwall.org>,
    Michal Kubiak <michal.kubiak@...el.com>,
    linux-kselftest@...r.kernel.org
Subject: Re: [PATCH net] selftests: bonding: Add more missing config options

Jakub Kicinski <kuba@...nel.org> wrote:

>On Tue, 16 Jan 2024 14:21:51 -0500 Benjamin Poirier wrote:
>> real    13m35.065s
>> user    0m1.657s
>> sys     0m27.918s
>> 
>> The test is not cpu bound; as Jay pointed out, it spends most of its
>> time sleeping.
>
>Ugh, so it does multiple iterations of 118 sec?
>
>Could you send a patch to bump the timeout to 900 or 1200 in this case?

	We could also lower the interval or number of notifications;
right now "peer_notif_delay 1000" puts 1 second between the ARPs in the
num_grat_arp() test.  I'm not sure why that value was chosen, but the
peer_notify_delay is rounded to units of the miimon interval, and in
this test miimon is 100 msec.

	I haven't tested this at all, but something like

diff --git a/tools/testing/selftests/drivers/net/bonding/bond_options.sh b/tools/testing/selftests/drivers/net/bonding/bond_options.sh
index c54d1697f439..95eb77aebc3c 100755
--- a/tools/testing/selftests/drivers/net/bonding/bond_options.sh
+++ b/tools/testing/selftests/drivers/net/bonding/bond_options.sh
@@ -277,7 +277,7 @@ garp_test()
 	ip -n ${s_ns} link set ${active_slave} down
 
 	exp_num=$(echo "${param}" | cut -f6 -d ' ')
-	sleep $((exp_num + 2))
+	sleep $((exp_num / 5 + 2))
 
 	active_slave=$(cmd_jq "ip -n ${s_ns} -d -j link show bond0" ".[].linkinfo.info_data.active_slave")
 
@@ -297,7 +297,7 @@ num_grat_arp()
 {
 	local val
 	for val in 10 20 30 50; do
-		garp_test "mode active-backup miimon 100 num_grat_arp $val peer_notify_delay 1000"
+		garp_test "mode active-backup miimon 100 num_grat_arp $val peer_notify_delay 200"
 		log_test "num_grat_arp" "active-backup miimon num_grat_arp $val"
 	done
 }

	could substantially reduce the time to run the test.  It's kind
of icky with magic numbers, but that could be cleaned up.

	-J

---
	-Jay Vosburgh, jay.vosburgh@...onical.com