From patchwork Thu May 26 21:46:57 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Hostetler X-Patchwork-Id: 12862833 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2DF28C433EF for ; Thu, 26 May 2022 21:49:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245307AbiEZVtT (ORCPT ); Thu, 26 May 2022 17:49:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33432 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232625AbiEZVtJ (ORCPT ); Thu, 26 May 2022 17:49:09 -0400 Received: from mail-wr1-x42d.google.com (mail-wr1-x42d.google.com [IPv6:2a00:1450:4864:20::42d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 698549D07A for ; Thu, 26 May 2022 14:49:08 -0700 (PDT) Received: by mail-wr1-x42d.google.com with SMTP id f2so3696330wrc.0 for ; Thu, 26 May 2022 14:49:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=message-id:in-reply-to:references:from:date:subject:fcc :content-transfer-encoding:mime-version:to:cc; bh=8V1FoXCb86xqZ2XOaLWrGr4avTXqor6TX1WNeRZ9avw=; b=bXiPtTnzpG01rncKfuzlmrVunrFNJCUID4DXS5HVzX5wNK+sGwsy9fXr6u8Ow6ZcnS hWsGE6t0PHIKrNzAeUh3po36PtcYLM2Ulu7Wub0kBGexmU4DLqarS3gwiagDwpE5X/hd 78Gf8Yw+Wqb7CyLtApY/sYu6EvkSMAQciUWXAdmjy/jvXlU3pT3qdDtnuE6ybtcLgeha lSNv5yXz1cIefJymhRZMfabgSL6tNHYMP60a39E8IbgMFrOqgYPNZzPR1oi/764urhgt Tu7pcbOgj8vDnBAHWxshswYpvVOWbamK1Nqls4zY7LImP+5lrjbqgO/+fccRxCHR8U82 kUtQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:in-reply-to:references:from:date :subject:fcc:content-transfer-encoding:mime-version:to:cc; bh=8V1FoXCb86xqZ2XOaLWrGr4avTXqor6TX1WNeRZ9avw=; b=w1wFj5dPzYbOGYqLvyeqHmEvwkJ9mgONDfv8DDLcS3aA+U2ojXMuJXq3lJ2Y+W/V+5 b7V3tLOjmk4mJ5cuToX1NQd91aJZ66eN8Y7sNpqt92UtveUptVfIVCqDSxz5qxpGFZmD F4muDT332ucR0fERUs/58Jr4v/H/kVtaN8xF7oio2/5TuIkJSzpl8bwOWWpdgtg/vNA+ MHC/Bdndaq8zJYqNoYzHsMwrF8+mVM+S23gx5oEukWrmZkoKWOeRdV7Gs60C8mfGhLz0 /THV/UakqTwOyLpTU5MfLyItxfFXG7jPZoJiOKUdiZWgcZINHnMakn0n0EFkerSKjghk v0JQ== X-Gm-Message-State: AOAM531zmUK4n0ES/HNZRp1ONEEXagZqMuX3muXAqg39bk5RHl9qBBT2 gw0cDlb230Mo9w8hw0xgtLmstR7z2Ac= X-Google-Smtp-Source: ABdhPJycqhj9iI25eYltbTAMidVVVB4wBopQ12kgHs/eqYrToxksJtkPzY3EQRSsF64MtdPkrk+J2w== X-Received: by 2002:a5d:620c:0:b0:20c:f50a:dafa with SMTP id y12-20020a5d620c000000b0020cf50adafamr33442384wru.460.1653601747724; Thu, 26 May 2022 14:49:07 -0700 (PDT) Received: from [127.0.0.1] ([13.74.141.28]) by smtp.gmail.com with ESMTPSA id p18-20020a05600c359200b003973a3fe4fasm219076wmq.42.2022.05.26.14.49.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 May 2022 14:49:07 -0700 (PDT) Message-Id: <6f8baf5b723c4eba2240ebb2abaf8124e315322d.1653601644.git.gitgitgadget@gmail.com> In-Reply-To: References: Date: Thu, 26 May 2022 21:46:57 +0000 Subject: [PATCH v9 03/30] t/helper/fsmonitor-client: create stress test Fcc: Sent MIME-Version: 1.0 To: git@vger.kernel.org Cc: Jeff Hostetler , Derrick Stolee , =?utf-8?b?w4Z2YXIgQXJuZmrDtnI=?= =?utf-8?b?w7A=?= Bjarmason , Torsten =?unknown-8bit?q?B?= =?unknown-8bit?q?=C3=B6gershausen?= , rsbecker@nexbridge.com, Bagas Sanjaya , Johannes Schindelin , Jeff Hostetler , Jeff Hostetler Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org From: Jeff Hostetler From: Jeff Hostetler Create a stress test to hammer on the fsmonitor daemon. Create a client-side thread pool of n threads and have each of them make m requests as fast as they can. We do not currently inspect the contents of the response. We're only interested in placing a heavy request load on the daemon. This test is useful for interactive testing and various experimentation. For example, to place additional load on the daemon while another test is running. We currently do not have a test script that actually uses this helper. We might add such a test in the future. Signed-off-by: Jeff Hostetler --- t/helper/test-fsmonitor-client.c | 106 +++++++++++++++++++++++++++++++ 1 file changed, 106 insertions(+) diff --git a/t/helper/test-fsmonitor-client.c b/t/helper/test-fsmonitor-client.c index 3062c8a3c2b..54a4856c48c 100644 --- a/t/helper/test-fsmonitor-client.c +++ b/t/helper/test-fsmonitor-client.c @@ -7,6 +7,8 @@ #include "cache.h" #include "parse-options.h" #include "fsmonitor-ipc.h" +#include "thread-utils.h" +#include "trace2.h" #ifndef HAVE_FSMONITOR_DAEMON_BACKEND int cmd__fsmonitor_client(int argc, const char **argv) @@ -79,20 +81,121 @@ static int do_send_flush(void) return 0; } +struct hammer_thread_data +{ + pthread_t pthread_id; + int thread_nr; + + int nr_requests; + const char *token; + + int sum_successful; + int sum_errors; +}; + +static void *hammer_thread_proc(void *_hammer_thread_data) +{ + struct hammer_thread_data *data = _hammer_thread_data; + struct strbuf answer = STRBUF_INIT; + int k; + int ret; + + trace2_thread_start("hammer"); + + for (k = 0; k < data->nr_requests; k++) { + strbuf_reset(&answer); + + ret = fsmonitor_ipc__send_query(data->token, &answer); + if (ret < 0) + data->sum_errors++; + else + data->sum_successful++; + } + + strbuf_release(&answer); + trace2_thread_exit(); + return NULL; +} + +/* + * Start a pool of client threads that will each send a series of + * commands to the daemon. + * + * The goal is to overload the daemon with a sustained series of + * concurrent requests. + */ +static int do_hammer(const char *token, int nr_threads, int nr_requests) +{ + struct hammer_thread_data *data = NULL; + int k; + int sum_join_errors = 0; + int sum_commands = 0; + int sum_errors = 0; + + if (!token || !*token) + token = get_token_from_index(); + if (nr_threads < 1) + nr_threads = 1; + if (nr_requests < 1) + nr_requests = 1; + + CALLOC_ARRAY(data, nr_threads); + + for (k = 0; k < nr_threads; k++) { + struct hammer_thread_data *p = &data[k]; + p->thread_nr = k; + p->nr_requests = nr_requests; + p->token = token; + + if (pthread_create(&p->pthread_id, NULL, hammer_thread_proc, p)) { + warning("failed to create thread[%d] skipping remainder", k); + nr_threads = k; + break; + } + } + + for (k = 0; k < nr_threads; k++) { + struct hammer_thread_data *p = &data[k]; + + if (pthread_join(p->pthread_id, NULL)) + sum_join_errors++; + sum_commands += p->sum_successful; + sum_errors += p->sum_errors; + } + + fprintf(stderr, "HAMMER: [threads %d][requests %d] [ok %d][err %d][join %d]\n", + nr_threads, nr_requests, sum_commands, sum_errors, sum_join_errors); + + free(data); + + /* + * Return an error if any of the _send_query requests failed. + * We don't care about thread create/join errors. + */ + return sum_errors > 0; +} + int cmd__fsmonitor_client(int argc, const char **argv) { const char *subcmd; const char *token = NULL; + int nr_threads = 1; + int nr_requests = 1; const char * const fsmonitor_client_usage[] = { "test-tool fsmonitor-client query []", "test-tool fsmonitor-client flush", + "test-tool fsmonitor-client hammer [] [] []", NULL, }; struct option options[] = { OPT_STRING(0, "token", &token, "token", "command token to send to the server"), + + OPT_INTEGER(0, "threads", &nr_threads, "number of client threads"), + OPT_INTEGER(0, "requests", &nr_requests, "number of requests per thread"), + OPT_END() }; @@ -111,6 +214,9 @@ int cmd__fsmonitor_client(int argc, const char **argv) if (!strcmp(subcmd, "flush")) return !!do_send_flush(); + if (!strcmp(subcmd, "hammer")) + return !!do_hammer(token, nr_threads, nr_requests); + die("Unhandled subcommand: '%s'", subcmd); } #endif