From patchwork Tue Jul 5 10:38:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Thomas Huth X-Patchwork-Id: 12906344 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 513E3C43334 for ; Tue, 5 Jul 2022 10:43:08 +0000 (UTC) Received: from localhost ([::1]:55966 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o8g1J-0006XY-Aw for qemu-devel@archiver.kernel.org; Tue, 05 Jul 2022 06:43:06 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:36316) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o8fwz-0006RL-4t for qemu-devel@nongnu.org; Tue, 05 Jul 2022 06:38:37 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:30219) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o8fwx-0005zY-FD for qemu-devel@nongnu.org; Tue, 05 Jul 2022 06:38:36 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1657017515; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=nwc+iXBws/23SLnZQiRVwc/hC4r78Tv2uAs7qc6w0Ts=; b=NbMDYWOp/f8/141082vbmFqGtr8Qt6hivJp/XbJWiF3AAKcEjJ8t6tkoOX9AZSo83RZs+C rMBmuvJcEOrwIiISRmRLg/x4L61QyieBXkP5J39AOJhbfk7pnGPOXenCTersO76WaffRsJ 8PNGVEHcn8/ZnNhxaW0aNnBO9WVtzEQ= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-490-R_JQJUauMpa8SCoTaq-Dmw-1; Tue, 05 Jul 2022 06:38:34 -0400 X-MC-Unique: R_JQJUauMpa8SCoTaq-Dmw-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id AF8ED29AA2E5; Tue, 5 Jul 2022 10:38:33 +0000 (UTC) Received: from thuth.com (unknown [10.39.193.133]) by smtp.corp.redhat.com (Postfix) with ESMTP id AE8CD492CA3; Tue, 5 Jul 2022 10:38:32 +0000 (UTC) From: Thomas Huth To: qemu-devel@nongnu.org, Richard Henderson Cc: =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , "Dr . David Alan Gilbert" Subject: [PULL 10/14] tests: use consistent bandwidth/downtime limits in migration tests Date: Tue, 5 Jul 2022 12:38:12 +0200 Message-Id: <20220705103816.608166-11-thuth@redhat.com> In-Reply-To: <20220705103816.608166-1-thuth@redhat.com> References: <20220705103816.608166-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.9 Received-SPF: pass client-ip=170.10.133.124; envelope-from=thuth@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Daniel P. Berrangé The different migration test cases are using a variety of settings to ensure convergance/non-convergance. Introduce two helpers to extra the common functionality and ensure consistency. * Non-convergance: 1ms downtime, 30mbs bandwidth * Convergance: 30s downtime, 1gbs bandwidth Signed-off-by: Daniel P. Berrangé Reviewed-by: Dr. David Alan Gilbert Message-Id: <20220628105434.295905-5-berrange@redhat.com> Signed-off-by: Thomas Huth --- tests/qtest/migration-test.c | 54 +++++++++++++----------------------- 1 file changed, 20 insertions(+), 34 deletions(-) diff --git a/tests/qtest/migration-test.c b/tests/qtest/migration-test.c index a54eff6d56..9e64125f02 100644 --- a/tests/qtest/migration-test.c +++ b/tests/qtest/migration-test.c @@ -46,9 +46,6 @@ unsigned start_address; unsigned end_address; static bool uffd_feature_thread_id; -/* A downtime where the test really should converge */ -#define CONVERGE_DOWNTIME (1000 * 30) - #if defined(__linux__) #include #include @@ -402,6 +399,20 @@ static void migrate_set_parameter_str(QTestState *who, const char *parameter, migrate_check_parameter_str(who, parameter, value); } +static void migrate_ensure_non_converge(QTestState *who) +{ + /* Can't converge with 1ms downtime + 30 mbs bandwidth limit */ + migrate_set_parameter_int(who, "max-bandwidth", 30 * 1000 * 1000); + migrate_set_parameter_int(who, "downtime-limit", 1); +} + +static void migrate_ensure_converge(QTestState *who) +{ + /* Should converge with 30s downtime + 1 gbs bandwidth limit */ + migrate_set_parameter_int(who, "max-bandwidth", 1 * 1000 * 1000 * 1000); + migrate_set_parameter_int(who, "downtime-limit", 30 * 1000); +} + static void migrate_pause(QTestState *who) { QDict *rsp; @@ -984,12 +995,7 @@ static int migrate_postcopy_prepare(QTestState **from_ptr, migrate_set_capability(to, "postcopy-ram", true); migrate_set_capability(to, "postcopy-blocktime", true); - /* We want to pick a speed slow enough that the test completes - * quickly, but that it doesn't complete precopy even on a slow - * machine, so also set the downtime. - */ - migrate_set_parameter_int(from, "max-bandwidth", 30000000); - migrate_set_parameter_int(from, "downtime-limit", 1); + migrate_ensure_non_converge(from); /* Wait for the first serial output from the source */ wait_for_serial("src_serial"); @@ -1188,15 +1194,7 @@ static void test_precopy_common(MigrateCommon *args) return; } - /* - * We want to pick a speed slow enough that the test completes - * quickly, but that it doesn't complete precopy even on a slow - * machine, so also set the downtime. - */ - /* 1 ms should make it not converge*/ - migrate_set_parameter_int(from, "downtime-limit", 1); - /* 1GB/s */ - migrate_set_parameter_int(from, "max-bandwidth", 1000000000); + migrate_ensure_non_converge(from); if (args->start_hook) { data_hook = args->start_hook(from, to); @@ -1230,7 +1228,7 @@ static void test_precopy_common(MigrateCommon *args) wait_for_migration_pass(from); } - migrate_set_parameter_int(from, "downtime-limit", CONVERGE_DOWNTIME); + migrate_ensure_converge(from); /* We do this first, as it has a timeout to stop us * hanging forever if migration didn't converge */ @@ -1694,8 +1692,7 @@ static void test_migrate_auto_converge(void) * Set the initial parameters so that the migration could not converge * without throttling. */ - migrate_set_parameter_int(from, "downtime-limit", 1); - migrate_set_parameter_int(from, "max-bandwidth", 100000000); /* ~100Mb/s */ + migrate_ensure_non_converge(from); /* To check remaining size after precopy */ migrate_set_capability(from, "pause-before-switchover", true); @@ -2000,15 +1997,7 @@ static void test_multifd_tcp_cancel(void) return; } - /* - * We want to pick a speed slow enough that the test completes - * quickly, but that it doesn't complete precopy even on a slow - * machine, so also set the downtime. - */ - /* 1 ms should make it not converge*/ - migrate_set_parameter_int(from, "downtime-limit", 1); - /* 300MB/s */ - migrate_set_parameter_int(from, "max-bandwidth", 30000000); + migrate_ensure_non_converge(from); migrate_set_parameter_int(from, "multifd-channels", 16); migrate_set_parameter_int(to, "multifd-channels", 16); @@ -2054,10 +2043,7 @@ static void test_multifd_tcp_cancel(void) wait_for_migration_status(from, "cancelled", NULL); - /* 300ms it should converge */ - migrate_set_parameter_int(from, "downtime-limit", 300); - /* 1GB/s */ - migrate_set_parameter_int(from, "max-bandwidth", 1000000000); + migrate_ensure_converge(from); migrate_qmp(from, uri, "{}");