From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id DEF4DA0093; Mon, 18 May 2020 13:00:02 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id C22441D440; Mon, 18 May 2020 13:00:02 +0200 (CEST) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by dpdk.org (Postfix) with ESMTP id B3F231D414 for ; Mon, 18 May 2020 13:00:00 +0200 (CEST) IronPort-SDR: fUwSOBRb/C9+ex3YEqbDYx3uYCUifQNxGmev8VeNVbZ5h1YNpo4d8FgW19UOZtz81X29clmvek eG3ZT2i+Fo3Q== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 May 2020 03:59:59 -0700 IronPort-SDR: AY8tEMv+WTT6yrB74JE6m5K7cVFwuoTW/tX3bx//Wq0IkINjdo7EOymAATbp1WqZzN2bHRgwJZ uugUNIT7t1FA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,407,1583222400"; d="scan'208";a="439173005" Received: from silpixa00399913.ir.intel.com (HELO silpixa00399913.ger.corp.intel.com) ([10.237.222.230]) by orsmga005.jf.intel.com with ESMTP; 18 May 2020 03:59:58 -0700 From: "Sexton, Rory" To: dev@dpdk.org, david.hunt@intel.com Cc: "Sexton, Rory" Date: Mon, 18 May 2020 11:39:00 +0100 Message-Id: <20200518103902.27927-1-rory.sexton@intel.com> X-Mailer: git-send-email 2.17.1 Subject: [dpdk-dev] [PATCH v2 1/3] examples/vm_power_manager: Make branch ratio threshold per core X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" This modification allows for the branch ratio threshold to be set per core rather than system wide. This gives greater flexibility to the branch ration monitoring allowing it to manage different workloads with different characteristics on the same system. Signed-off-by: Rory Sexton --- examples/vm_power_manager/main.c | 40 +++++++++++--------- examples/vm_power_manager/oob_monitor_x86.c | 2 +- examples/vm_power_manager/parse.c | 42 ++++++++++++++++++++- examples/vm_power_manager/parse.h | 3 ++ examples/vm_power_manager/power_manager.c | 2 +- examples/vm_power_manager/power_manager.h | 2 +- 6 files changed, 68 insertions(+), 23 deletions(-) diff --git a/examples/vm_power_manager/main.c b/examples/vm_power_manager/main.c index 273bfec29..f077e3fe4 100644 --- a/examples/vm_power_manager/main.c +++ b/examples/vm_power_manager/main.c @@ -165,15 +165,14 @@ parse_args(int argc, char **argv) static struct option lgopts[] = { { "mac-updating", no_argument, 0, 1}, { "no-mac-updating", no_argument, 0, 0}, - { "core-list", optional_argument, 0, 'l'}, + { "core-branch-ratio", optional_argument, 0, 'b'}, { "port-list", optional_argument, 0, 'p'}, - { "branch-ratio", optional_argument, 0, 'b'}, {NULL, 0, 0, 0} }; argvopt = argv; ci = get_core_info(); - while ((opt = getopt_long(argc, argvopt, "l:p:q:T:b:", + while ((opt = getopt_long(argc, argvopt, "p:q:T:b:", lgopts, &option_index)) != EOF) { switch (opt) { @@ -185,7 +184,8 @@ parse_args(int argc, char **argv) return -1; } break; - case 'l': + case 'b': + branch_ratio = BRANCH_RATIO_THRESHOLD; oob_enable = malloc(ci->core_count * sizeof(uint16_t)); if (oob_enable == NULL) { printf("Error - Unable to allocate memory\n"); @@ -193,32 +193,37 @@ parse_args(int argc, char **argv) } cnt = parse_set(optarg, oob_enable, ci->core_count); if (cnt < 0) { - printf("Invalid core-list - [%s]\n", + printf("Invalid core-list section in " + "core-branch-ratio matrix - [%s]\n", + optarg); + free(oob_enable); + break; + } + cnt = parse_branch_ratio(optarg, &branch_ratio); + if (cnt < 0) { + printf("Invalid branch-ratio section in " + "core-branch-ratio matrix - [%s]\n", optarg); free(oob_enable); break; } + if (branch_ratio <= 0.0) { + printf("invalid branch ratio specified\n"); + return -1; + } for (i = 0; i < ci->core_count; i++) { if (oob_enable[i]) { - printf("***Using core %d\n", i); + printf("***Using core %d " + "with branch ratio %f\n", + i, branch_ratio); ci->cd[i].oob_enabled = 1; ci->cd[i].global_enabled_cpus = 1; + ci->cd[i].branch_ratio_threshold = + branch_ratio; } } free(oob_enable); break; - case 'b': - branch_ratio = 0.0; - if (strlen(optarg)) - branch_ratio = atof(optarg); - if (branch_ratio <= 0.0) { - printf("invalid branch ratio specified\n"); - return -1; - } - ci->branch_ratio_threshold = branch_ratio; - printf("***Setting branch ratio to %f\n", - branch_ratio); - break; /* long options */ case 0: break; diff --git a/examples/vm_power_manager/oob_monitor_x86.c b/examples/vm_power_manager/oob_monitor_x86.c index aecfcb2eb..3c514475f 100644 --- a/examples/vm_power_manager/oob_monitor_x86.c +++ b/examples/vm_power_manager/oob_monitor_x86.c @@ -109,7 +109,7 @@ apply_policy(int core) * down. Each core_details struct has it's own array. */ freq_window_idx = ci->cd[core].freq_window_idx; - if (ratio > ci->branch_ratio_threshold) + if (ratio > ci->cd[core].branch_ratio_threshold) ci->cd[core].freq_directions[freq_window_idx] = 1; else ci->cd[core].freq_directions[freq_window_idx] = 0; diff --git a/examples/vm_power_manager/parse.c b/examples/vm_power_manager/parse.c index 8231533b6..8a8dcf05f 100644 --- a/examples/vm_power_manager/parse.c +++ b/examples/vm_power_manager/parse.c @@ -60,7 +60,7 @@ parse_set(const char *input, uint16_t set[], unsigned int num) min = idx; else /* avoid continuous '-' */ return -1; - } else if ((*end == ',') || (*end == '\0')) { + } else if ((*end == ',') || (*end == ':') || (*end == '\0')) { max = idx; if (min == num) @@ -75,7 +75,45 @@ parse_set(const char *input, uint16_t set[], unsigned int num) return -1; str = end + 1; - } while (*end != '\0'); + } while ((*end != '\0') && (*end != ':')); + + return str - input; +} + +int +parse_branch_ratio(const char *input, float *branch_ratio) +{ + const char *str = input; + char *end = NULL; + + while (isblank(*str)) + str++; + + if (*str == '\0') + return -1; + + /* Go straight to the ':' separator if present */ + while ((*str != '\0') && (*str != ':')) + str++; + + /* Branch ratio not specified in args so leave it at default setting */ + if (*str == '\0') + return 0; + + /* Confirm ':' separator present */ + if (*str != ':') + return -1; + + str++; + errno = 0; + *branch_ratio = strtof(str, &end); + if (errno || end == NULL) + return -1; + + if (*end != '\0') + return -1; + + str = end + 1; return str - input; } diff --git a/examples/vm_power_manager/parse.h b/examples/vm_power_manager/parse.h index a5971e9a2..892dee449 100644 --- a/examples/vm_power_manager/parse.h +++ b/examples/vm_power_manager/parse.h @@ -12,6 +12,9 @@ extern "C" { int parse_set(const char *, uint16_t [], unsigned int); +int +parse_branch_ratio(const char *input, float *branch_ratio); + #ifdef __cplusplus } #endif diff --git a/examples/vm_power_manager/power_manager.c b/examples/vm_power_manager/power_manager.c index 7b4f4b3c4..b52128db1 100644 --- a/examples/vm_power_manager/power_manager.c +++ b/examples/vm_power_manager/power_manager.c @@ -60,7 +60,6 @@ core_info_init(void) ci = get_core_info(); ci->core_count = get_nprocs_conf(); - ci->branch_ratio_threshold = BRANCH_RATIO_THRESHOLD; ci->cd = malloc(ci->core_count * sizeof(struct core_details)); memset(ci->cd, 0, ci->core_count * sizeof(struct core_details)); if (!ci->cd) { @@ -69,6 +68,7 @@ core_info_init(void) } for (i = 0; i < ci->core_count; i++) { ci->cd[i].global_enabled_cpus = 1; + ci->cd[i].branch_ratio_threshold = BRANCH_RATIO_THRESHOLD; } printf("%d cores in system\n", ci->core_count); return 0; diff --git a/examples/vm_power_manager/power_manager.h b/examples/vm_power_manager/power_manager.h index e324766b6..d35f8cbe0 100644 --- a/examples/vm_power_manager/power_manager.h +++ b/examples/vm_power_manager/power_manager.h @@ -26,12 +26,12 @@ struct core_details { uint16_t freq_directions[FREQ_WINDOW_SIZE]; uint16_t freq_window_idx; uint16_t freq_state; + float branch_ratio_threshold; }; struct core_info { uint16_t core_count; struct core_details *cd; - float branch_ratio_threshold; }; #define BRANCH_RATIO_THRESHOLD 0.1 -- 2.17.1