From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 3320445B90; Mon, 21 Oct 2024 13:53:50 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 3BED4402E9; Mon, 21 Oct 2024 13:53:45 +0200 (CEST) Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by mails.dpdk.org (Postfix) with ESMTP id 0D9554026B for ; Mon, 21 Oct 2024 13:53:42 +0200 (CEST) Received: from mail.maildlp.com (unknown [172.19.163.48]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4XXDCy2bjczfdJk; Mon, 21 Oct 2024 19:51:10 +0800 (CST) Received: from kwepemm600004.china.huawei.com (unknown [7.193.23.242]) by mail.maildlp.com (Postfix) with ESMTPS id BF4E018005F; Mon, 21 Oct 2024 19:53:39 +0800 (CST) Received: from localhost.localdomain (10.28.79.22) by kwepemm600004.china.huawei.com (7.193.23.242) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Mon, 21 Oct 2024 19:53:39 +0800 From: Huisong Li To: CC: , , , , , , , , , , , Subject: [PATCH v11 2/2] examples/l3fwd-power: add PM QoS configuration Date: Mon, 21 Oct 2024 19:42:53 +0800 Message-ID: <20241021114253.31216-3-lihuisong@huawei.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20241021114253.31216-1-lihuisong@huawei.com> References: <20240320105529.5626-1-lihuisong@huawei.com> <20241021114253.31216-1-lihuisong@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-Originating-IP: [10.28.79.22] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemm600004.china.huawei.com (7.193.23.242) X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Add PM QoS configuration to declease the delay after sleep in case of entering deeper idle state. Signed-off-by: Huisong Li Acked-by: Morten Brørup --- examples/l3fwd-power/main.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c index 2bb6b092c3..b0ddb54ee2 100644 --- a/examples/l3fwd-power/main.c +++ b/examples/l3fwd-power/main.c @@ -47,6 +47,7 @@ #include #include #include +#include #include "perf_core.h" #include "main.h" @@ -2260,6 +2261,22 @@ init_power_library(void) return -1; } } + + RTE_LCORE_FOREACH(lcore_id) { + /* + * Set the worker lcore's to have strict latency limit to allow + * the CPU to enter the shallowest idle state. + */ + ret = rte_power_qos_set_cpu_resume_latency(lcore_id, + RTE_POWER_QOS_STRICT_LATENCY_VALUE); + if (ret != 0) { + RTE_LOG(ERR, L3FWD_POWER, + "Failed to set strict resume latency on core%u.\n", + lcore_id); + return ret; + } + } + return ret; } @@ -2299,6 +2316,13 @@ deinit_power_library(void) } } } + + RTE_LCORE_FOREACH(lcore_id) { + /* Restore the original value in kernel. */ + rte_power_qos_set_cpu_resume_latency(lcore_id, + RTE_POWER_QOS_RESUME_LATENCY_NO_CONSTRAINT); + } + return ret; } -- 2.22.0