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2f53ae347f
Just like 'perf trace' and 'perf script', should be useful for instance
to only consider samples after the initialization phase of some
workload.
The man page has some examples and considerations about its current
interface, that still doesn't handle the on/off events in a special way,
behaving just like when multiple events are specified, i.e.:
- In non-group mode (when the event list is not enclosed in {}) show a
a menu to allow choosing which event the user wants to see in the
histograms browser
- In group mode, be it using {} or asking for --group, show one column
per event.
Try for instance:
# perf top -e '{cycles,instructions,probe:icmp_rcv}' --switch-on=probe:icmp_rcv
Replace probe:icmp_rcv, that I put in place using:
# perf probe icmp_rcv:59
To hit when broadcast packets arrive, with a probe installed after an
initialization phase is over or after some other point of interest, some
garbage collection, etc, and also use --switch-off, for instance, on a
probe installed after said garbage collection is over.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: William Cohen <wcohen@redhat.com>
Link: https://lkml.kernel.org/n/tip-c7q7qjeqtyvc9mkeipxza6ne@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_TOP_H
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#define __PERF_TOP_H 1
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#include "tool.h"
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#include "evswitch.h"
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#include "annotate.h"
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#include <linux/types.h>
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#include <stddef.h>
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#include <stdbool.h>
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#include <sys/ioctl.h>
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struct evlist;
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struct evsel;
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struct perf_session;
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struct perf_top {
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struct perf_tool tool;
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struct evlist *evlist;
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struct record_opts record_opts;
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struct annotation_options annotation_opts;
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struct evswitch evswitch;
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/*
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* Symbols will be added here in perf_event__process_sample and will
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* get out after decayed.
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*/
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u64 samples, lost, lost_total, drop, drop_total;
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u64 kernel_samples, us_samples;
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u64 exact_samples;
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u64 guest_us_samples, guest_kernel_samples;
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int print_entries, count_filter, delay_secs;
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int max_stack;
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bool hide_kernel_symbols, hide_user_symbols, zero;
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bool use_tui, use_stdio;
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bool vmlinux_warned;
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bool dump_symtab;
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struct hist_entry *sym_filter_entry;
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struct evsel *sym_evsel;
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struct perf_session *session;
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struct winsize winsize;
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int realtime_prio;
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const char *sym_filter;
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float min_percent;
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unsigned int nr_threads_synthesize;
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struct {
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struct ordered_events *in;
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struct ordered_events data[2];
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bool rotate;
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pthread_mutex_t mutex;
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pthread_cond_t cond;
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} qe;
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};
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#define CONSOLE_CLEAR "[H[2J"
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size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size);
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void perf_top__reset_sample_counters(struct perf_top *top);
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#endif /* __PERF_TOP_H */
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