From: Julian Anastasov <ja@ssi.bg>
To: Jiri Wiesner <jwiesner@suse.de>
Cc: Simon Horman <horms@verge.net.au>,
lvs-devel@vger.kernel.org,
yunhong-cgl jiang <xintian1976@gmail.com>,
dust.li@linux.alibaba.com
Subject: [RFC PATCHv3 5/5] ipvs: debug the tick time
Date: Mon, 12 Sep 2022 13:18:38 +0300 [thread overview]
Message-ID: <20220912101838.12522-6-ja@ssi.bg> (raw)
In-Reply-To: <20220912101838.12522-1-ja@ssi.bg>
Just for testing print the tick time every 2 seconds
Signed-off-by: Julian Anastasov <ja@ssi.bg>
---
net/netfilter/ipvs/ip_vs_est.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/net/netfilter/ipvs/ip_vs_est.c b/net/netfilter/ipvs/ip_vs_est.c
index 5f5ee29fdcb5..a765ec2b0594 100644
--- a/net/netfilter/ipvs/ip_vs_est.c
+++ b/net/netfilter/ipvs/ip_vs_est.c
@@ -141,7 +141,13 @@ static void ip_vs_tick_estimation(struct ip_vs_est_kt_data *kd, int row)
{
struct ip_vs_est_tick_data *td;
int cid;
+ u64 ns = 0;
+ static int used_row = -1;
+ if (used_row < 0)
+ used_row = row;
+ if (row == used_row && !kd->id)
+ ns = ktime_get_ns();
rcu_read_lock();
td = rcu_dereference(kd->ticks[row]);
if (!td)
@@ -158,6 +164,16 @@ static void ip_vs_tick_estimation(struct ip_vs_est_kt_data *kd, int row)
out:
rcu_read_unlock();
+ if (row == used_row && !kd->id) {
+ static int ncpu;
+
+ ns = ktime_sub(ktime_get_ns(), ns);
+ if (!ncpu)
+ ncpu = num_possible_cpus();
+ pr_info("tick time: %lluns for %d CPUs, %d ests, %d chains, max depth %d\n",
+ (unsigned long long) ns, ncpu, kd->tick_len[row],
+ IPVS_EST_TICK_CHAINS, kd->chain_max_len);
+ }
}
static int ip_vs_estimation_kthread(void *data)
--
2.37.3
prev parent reply other threads:[~2022-09-12 10:18 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-12 10:18 [RFC PATCHv3 0/5] ipvs: Use kthreads for stats Julian Anastasov
2022-09-12 10:18 ` [RFC PATCHv3 1/5] ipvs: add rcu protection to stats Julian Anastasov
2022-09-12 10:18 ` [RFC PATCHv3 2/5] ipvs: use kthreads for stats estimation Julian Anastasov
2022-09-12 10:18 ` [RFC PATCHv3 3/5] ipvs: add est_cpulist and est_nice sysctl vars Julian Anastasov
2022-09-12 10:18 ` [RFC PATCHv3 4/5] ipvs: run_estimation should control the kthread tasks Julian Anastasov
2022-09-12 10:18 ` Julian Anastasov [this message]
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