From mboxrd@z Thu Jan 1 00:00:00 1970 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 697D5C433EF for ; Wed, 22 Jun 2022 19:21:12 +0000 (UTC) Received: from localhost ([::1]:47082 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o45uZ-0003c4-8i for qemu-devel@archiver.kernel.org; Wed, 22 Jun 2022 15:21:11 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56616) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o45Gq-0008KN-2Z for qemu-devel@nongnu.org; Wed, 22 Jun 2022 14:40:08 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:24838) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o45Gl-0002PQ-J5 for qemu-devel@nongnu.org; Wed, 22 Jun 2022 14:40:06 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1655923203; 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=02bsooRW+muNZAOrkp1FfrnPEavTqzUd2wxFwS1LpsA=; b=Enp91roCJO4QA2E3uwXdBXU1UrC+DJEyQD0UnMxhlGG4y8S8m9/H49jSaprqsnRjqRxtHs lvaQP3hyo+GyZv/lDS3y7Tg5kZJNDL9rvdEbXKXHiSPwgxVRMwjkUvDRp4cNyuD5ANJoGd 56MGFrKLZSqogesvlpaDPe04F6tA/D4= 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-390-OUbsYp4tPo-sQIOzJWolhQ-1; Wed, 22 Jun 2022 14:40:00 -0400 X-MC-Unique: OUbsYp4tPo-sQIOzJWolhQ-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 5A5C43831C4D; Wed, 22 Jun 2022 18:40:00 +0000 (UTC) Received: from dgilbert-t580.localhost (unknown [10.33.36.161]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7968E1131D; Wed, 22 Jun 2022 18:39:59 +0000 (UTC) From: "Dr. David Alan Gilbert (git)" To: qemu-devel@nongnu.org, berrange@redhat.com, huangy81@chinatelecom.cn, quintela@redhat.com, leobras@redhat.com Cc: jdenemar@redhat.com Subject: [PULL 33/33] tests: Add dirty page rate limit test Date: Wed, 22 Jun 2022 19:39:17 +0100 Message-Id: <20220622183917.155308-34-dgilbert@redhat.com> In-Reply-To: <20220622183917.155308-1-dgilbert@redhat.com> References: <20220622183917.155308-1-dgilbert@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 Received-SPF: pass client-ip=170.10.133.124; envelope-from=dgilbert@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 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_LOW=-0.7, 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: Hyman Huang(黄勇) Add dirty page rate limit test if kernel support dirty ring. The following qmp commands are covered by this test case: "calc-dirty-rate", "query-dirty-rate", "set-vcpu-dirty-limit", "cancel-vcpu-dirty-limit" and "query-vcpu-dirty-limit". Signed-off-by: Hyman Huang(黄勇) Acked-by: Peter Xu Message-Id: <81ecb7b473d8ee2adf414a1f69ce8b7bd678c558.1652931128.git.huangy81@chinatelecom.cn> Signed-off-by: Dr. David Alan Gilbert --- tests/qtest/migration-helpers.c | 22 +++ tests/qtest/migration-helpers.h | 2 + tests/qtest/migration-test.c | 255 ++++++++++++++++++++++++++++++++ 3 files changed, 279 insertions(+) diff --git a/tests/qtest/migration-helpers.c b/tests/qtest/migration-helpers.c index a6aa59e4e6..4849cba720 100644 --- a/tests/qtest/migration-helpers.c +++ b/tests/qtest/migration-helpers.c @@ -75,6 +75,28 @@ QDict *wait_command(QTestState *who, const char *command, ...) return ret; } +/* + * Execute the qmp command only + */ +QDict *qmp_command(QTestState *who, const char *command, ...) +{ + va_list ap; + QDict *resp, *ret; + + va_start(ap, command); + resp = qtest_vqmp(who, command, ap); + va_end(ap); + + g_assert(!qdict_haskey(resp, "error")); + g_assert(qdict_haskey(resp, "return")); + + ret = qdict_get_qdict(resp, "return"); + qobject_ref(ret); + qobject_unref(resp); + + return ret; +} + /* * Send QMP command "migrate". * Arguments are built from @fmt... (formatted like diff --git a/tests/qtest/migration-helpers.h b/tests/qtest/migration-helpers.h index 78587c2b82..59561898d0 100644 --- a/tests/qtest/migration-helpers.h +++ b/tests/qtest/migration-helpers.h @@ -23,6 +23,8 @@ QDict *wait_command_fd(QTestState *who, int fd, const char *command, ...); G_GNUC_PRINTF(2, 3) QDict *wait_command(QTestState *who, const char *command, ...); +QDict *qmp_command(QTestState *who, const char *command, ...); + G_GNUC_PRINTF(3, 4) void migrate_qmp(QTestState *who, const char *uri, const char *fmt, ...); diff --git a/tests/qtest/migration-test.c b/tests/qtest/migration-test.c index d33e8060f9..f59d31b2ef 100644 --- a/tests/qtest/migration-test.c +++ b/tests/qtest/migration-test.c @@ -24,6 +24,7 @@ #include "qapi/qobject-input-visitor.h" #include "qapi/qobject-output-visitor.h" #include "crypto/tlscredspsk.h" +#include "qapi/qmp/qlist.h" #include "migration-helpers.h" #include "tests/migration/migration-test.h" @@ -58,6 +59,11 @@ static bool uffd_feature_thread_id; #include #include #include +/* + * Dirtylimit stop working if dirty page rate error + * value less than DIRTYLIMIT_TOLERANCE_RANGE + */ +#define DIRTYLIMIT_TOLERANCE_RANGE 25 /* MB/s */ static bool ufd_version_check(void) { @@ -2070,6 +2076,253 @@ static void test_multifd_tcp_cancel(void) test_migrate_end(from, to2, true); } +static void calc_dirty_rate(QTestState *who, uint64_t calc_time) +{ + qobject_unref(qmp_command(who, + "{ 'execute': 'calc-dirty-rate'," + "'arguments': { " + "'calc-time': %ld," + "'mode': 'dirty-ring' }}", + calc_time)); +} + +static QDict *query_dirty_rate(QTestState *who) +{ + return qmp_command(who, "{ 'execute': 'query-dirty-rate' }"); +} + +static void dirtylimit_set_all(QTestState *who, uint64_t dirtyrate) +{ + qobject_unref(qmp_command(who, + "{ 'execute': 'set-vcpu-dirty-limit'," + "'arguments': { " + "'dirty-rate': %ld } }", + dirtyrate)); +} + +static void cancel_vcpu_dirty_limit(QTestState *who) +{ + qobject_unref(qmp_command(who, + "{ 'execute': 'cancel-vcpu-dirty-limit' }")); +} + +static QDict *query_vcpu_dirty_limit(QTestState *who) +{ + QDict *rsp; + + rsp = qtest_qmp(who, "{ 'execute': 'query-vcpu-dirty-limit' }"); + g_assert(!qdict_haskey(rsp, "error")); + g_assert(qdict_haskey(rsp, "return")); + + return rsp; +} + +static bool calc_dirtyrate_ready(QTestState *who) +{ + QDict *rsp_return; + gchar *status; + + rsp_return = query_dirty_rate(who); + g_assert(rsp_return); + + status = g_strdup(qdict_get_str(rsp_return, "status")); + g_assert(status); + + return g_strcmp0(status, "measuring"); +} + +static void wait_for_calc_dirtyrate_complete(QTestState *who, + int64_t time_s) +{ + int max_try_count = 10000; + usleep(time_s * 1000000); + + while (!calc_dirtyrate_ready(who) && max_try_count--) { + usleep(1000); + } + + /* + * Set the timeout with 10 s(max_try_count * 1000us), + * if dirtyrate measurement not complete, fail test. + */ + g_assert_cmpint(max_try_count, !=, 0); +} + +static int64_t get_dirty_rate(QTestState *who) +{ + QDict *rsp_return; + gchar *status; + QList *rates; + const QListEntry *entry; + QDict *rate; + int64_t dirtyrate; + + rsp_return = query_dirty_rate(who); + g_assert(rsp_return); + + status = g_strdup(qdict_get_str(rsp_return, "status")); + g_assert(status); + g_assert_cmpstr(status, ==, "measured"); + + rates = qdict_get_qlist(rsp_return, "vcpu-dirty-rate"); + g_assert(rates && !qlist_empty(rates)); + + entry = qlist_first(rates); + g_assert(entry); + + rate = qobject_to(QDict, qlist_entry_obj(entry)); + g_assert(rate); + + dirtyrate = qdict_get_try_int(rate, "dirty-rate", -1); + + qobject_unref(rsp_return); + return dirtyrate; +} + +static int64_t get_limit_rate(QTestState *who) +{ + QDict *rsp_return; + QList *rates; + const QListEntry *entry; + QDict *rate; + int64_t dirtyrate; + + rsp_return = query_vcpu_dirty_limit(who); + g_assert(rsp_return); + + rates = qdict_get_qlist(rsp_return, "return"); + g_assert(rates && !qlist_empty(rates)); + + entry = qlist_first(rates); + g_assert(entry); + + rate = qobject_to(QDict, qlist_entry_obj(entry)); + g_assert(rate); + + dirtyrate = qdict_get_try_int(rate, "limit-rate", -1); + + qobject_unref(rsp_return); + return dirtyrate; +} + +static QTestState *dirtylimit_start_vm(void) +{ + QTestState *vm = NULL; + g_autofree gchar *cmd = NULL; + const char *arch = qtest_get_arch(); + g_autofree char *bootpath = NULL; + + assert((strcmp(arch, "x86_64") == 0)); + bootpath = g_strdup_printf("%s/bootsect", tmpfs); + assert(sizeof(x86_bootsect) == 512); + init_bootfile(bootpath, x86_bootsect, sizeof(x86_bootsect)); + + cmd = g_strdup_printf("-accel kvm,dirty-ring-size=4096 " + "-name dirtylimit-test,debug-threads=on " + "-m 150M -smp 1 " + "-serial file:%s/vm_serial " + "-drive file=%s,format=raw ", + tmpfs, bootpath); + + vm = qtest_init(cmd); + return vm; +} + +static void dirtylimit_stop_vm(QTestState *vm) +{ + qtest_quit(vm); + cleanup("bootsect"); + cleanup("vm_serial"); +} + +static void test_vcpu_dirty_limit(void) +{ + QTestState *vm; + int64_t origin_rate; + int64_t quota_rate; + int64_t rate ; + int max_try_count = 20; + int hit = 0; + + /* Start vm for vcpu dirtylimit test */ + vm = dirtylimit_start_vm(); + + /* Wait for the first serial output from the vm*/ + wait_for_serial("vm_serial"); + + /* Do dirtyrate measurement with calc time equals 1s */ + calc_dirty_rate(vm, 1); + + /* Sleep calc time and wait for calc dirtyrate complete */ + wait_for_calc_dirtyrate_complete(vm, 1); + + /* Query original dirty page rate */ + origin_rate = get_dirty_rate(vm); + + /* VM booted from bootsect should dirty memory steadily */ + assert(origin_rate != 0); + + /* Setup quota dirty page rate at half of origin */ + quota_rate = origin_rate / 2; + + /* Set dirtylimit */ + dirtylimit_set_all(vm, quota_rate); + + /* + * Check if set-vcpu-dirty-limit and query-vcpu-dirty-limit + * works literally + */ + g_assert_cmpint(quota_rate, ==, get_limit_rate(vm)); + + /* Sleep a bit to check if it take effect */ + usleep(2000000); + + /* + * Check if dirtylimit take effect realistically, set the + * timeout with 20 s(max_try_count * 1s), if dirtylimit + * doesn't take effect, fail test. + */ + while (--max_try_count) { + calc_dirty_rate(vm, 1); + wait_for_calc_dirtyrate_complete(vm, 1); + rate = get_dirty_rate(vm); + + /* + * Assume hitting if current rate is less + * than quota rate (within accepting error) + */ + if (rate < (quota_rate + DIRTYLIMIT_TOLERANCE_RANGE)) { + hit = 1; + break; + } + } + + g_assert_cmpint(hit, ==, 1); + + hit = 0; + max_try_count = 20; + + /* Check if dirtylimit cancellation take effect */ + cancel_vcpu_dirty_limit(vm); + while (--max_try_count) { + calc_dirty_rate(vm, 1); + wait_for_calc_dirtyrate_complete(vm, 1); + rate = get_dirty_rate(vm); + + /* + * Assume dirtylimit be canceled if current rate is + * greater than quota rate (within accepting error) + */ + if (rate > (quota_rate + DIRTYLIMIT_TOLERANCE_RANGE)) { + hit = 1; + break; + } + } + + g_assert_cmpint(hit, ==, 1); + dirtylimit_stop_vm(vm); +} + static bool kvm_dirty_ring_supported(void) { #if defined(__linux__) && defined(HOST_X86_64) @@ -2215,6 +2468,8 @@ int main(int argc, char **argv) if (kvm_dirty_ring_supported()) { qtest_add_func("/migration/dirty_ring", test_precopy_unix_dirty_ring); + qtest_add_func("/migration/vcpu_dirty_limit", + test_vcpu_dirty_limit); } ret = g_test_run(); -- 2.36.1