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ddsperf enhancements

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* per-thread CPU usage (only those threads where the load is over 0.5%,
  if the sum of threads below that threshold exceeds 0.5%, it prints an
  aggregate for those threads);

* also report RSS;

* network load (only on request, as percentage of specified network
  bandwidth and actual bytes in/out, with the output suppressed if it is
  0%);

* publish CPU usage so a ddsperf instance can display CPU loads for
  its peers;

* handle SIGXFSZ (file size exceeded) by displaying one last line of
  statistics before killing itself; this simply a debugging tool to make
  it easier to get a trace covering a high sample-rate start-up issue;

* default topic changed to "KS" because that allows all the options to
  be used, this has a negative impact on performance (both latency and
  small-sample throughput) but it should be less surprising to users;

* specifying a size is now done by appending "size N" (where N is the
  size in bytes) after a "ping" or "pub" command, rather than it having
  to set it via a command-line option;

Note that some of this is platform-dependent -- SIGXFSZ is currently
only on Linux and macOS, and CPU and network load reporting is currently
only on Linux, macOS and Windows.

Signed-off-by: Erik Boasson <eb@ilities.com>
This commit is contained in:
Erik Boasson 2019-08-02 08:58:18 +02:00 • committed by eboasson
parent ecb77d481c
commit 952029dba0
7 changed files with 627 additions and 42 deletions
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24
src/tools/ddsperf/cputime.h Normal file
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/*
* Copyright(c) 2019 ADLINK Technology Limited and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0, or the Eclipse Distribution License
* v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
#ifndef CPUTIME_H
#define CPUTIME_H
#include "ddsperf_types.h"
struct record_cputime_state;
struct record_cputime_state *record_cputime_new (dds_entity_t wr);
void record_cputime_free (struct record_cputime_state *state);
bool record_cputime (struct record_cputime_state *state, const char *prefix, dds_time_t tnow);
bool print_cputime (const struct CPUStats *s, const char *prefix, bool print_host, bool is_fresh);
#endif