4e3cc6e1de
This sets the maximum tolerated additional latency on an I/O, which potentially allows a thread to sleep and save power. However, today if a poller is registered on the thread it will never sleep, which is always true for the nvmf_tgt. Further, if this were fixed such that the thread could sleep as long as the pollers all reported idle, this max latency ends up breaking the QoS test because the service provided is more than 10% away from the target number. Change-Id: Ic9decbd92ad4e0c19eb81eea18a59207d6028367 Signed-off-by: Ben Walker <benjamin.walker@intel.com> Reviewed-on: https://review.gerrithub.io/432497 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-by: Piotr Pelpliński <piotr.pelplinski@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com>
79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "spdk/stdinc.h"
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#include "spdk/env.h"
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#include "spdk/event.h"
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static void
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nvmf_usage(void)
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{
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}
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static void
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nvmf_parse_arg(int ch, char *arg)
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{
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}
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static void
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nvmf_tgt_started(void *arg1, void *arg2)
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{
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if (getenv("MEMZONE_DUMP") != NULL) {
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spdk_memzone_dump(stdout);
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fflush(stdout);
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}
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}
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int
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main(int argc, char **argv)
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{
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int rc;
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struct spdk_app_opts opts = {};
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/* default value in opts */
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spdk_app_opts_init(&opts);
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opts.name = "nvmf";
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opts.max_delay_us = 0;
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if ((rc = spdk_app_parse_args(argc, argv, &opts, "", NULL,
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nvmf_parse_arg, nvmf_usage)) !=
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SPDK_APP_PARSE_ARGS_SUCCESS) {
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exit(rc);
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}
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/* Blocks until the application is exiting */
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rc = spdk_app_start(&opts, nvmf_tgt_started, NULL, NULL);
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spdk_app_fini();
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return rc;
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}
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