netdev - [PATCH bpf-next] samples/bpf: reduce the sampling interval in xdp1

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Message-ID: <20220419114746.291613-1-shaozhengchao@huawei.com>
Date:   Tue, 19 Apr 2022 19:47:46 +0800
From:   Zhengchao Shao <shaozhengchao@...wei.com>
To:     <bpf@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <ast@...nel.org>,
        <daniel@...earbox.net>, <davem@...emloft.net>, <kuba@...nel.org>,
        <hawk@...nel.org>, <john.fastabend@...il.com>, <andrii@...nel.org>,
        <kafai@...com>, <songliubraving@...com>, <yhs@...com>,
        <kpsingh@...nel.org>
CC:     <weiyongjun1@...wei.com>, <shaozhengchao@...wei.com>,
        <yuehaibing@...wei.com>
Subject: [PATCH bpf-next] samples/bpf: reduce the sampling interval in xdp1_user

If interval is 2, and sum - prev[key] = 1, the result = 0. This will
mislead the tester that the port has no traffic right now. So reduce the
sampling interval to 1.

Signed-off-by: Zhengchao Shao <shaozhengchao@...wei.com>
---
 samples/bpf/xdp1_user.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/samples/bpf/xdp1_user.c b/samples/bpf/xdp1_user.c
index 631f0cabe139..bacebb4b602f 100644
--- a/samples/bpf/xdp1_user.c
+++ b/samples/bpf/xdp1_user.c
@@ -161,7 +161,7 @@ int main(int argc, char **argv)
 	}
 	prog_id = info.id;
 
-	poll_stats(map_fd, 2);
+	poll_stats(map_fd, 1);
 
 	return 0;
 }
-- 
2.17.1