forked from Minki/linux
ab81f3fd35
This actually fixes several problems we had in the old 'perf top':
1. Unresolved symbols not show, limitation that came from the old
"KernelTop" codebase, to solve it we would need to do changes
that would make sym_entry have most of the hist_entry fields.
2. It was using the number of samples, not the sum of sample->period.
And brings the --sort code that allows us to have all the views in
'perf report', for instance:
[root@emilia ~]# perf top --sort dso
PerfTop: 5903 irqs/sec kernel:77.5% exact: 0.0% [1000Hz cycles], (all, 8 CPUs)
------------------------------------------------------------------------------
31.59% libcrypto.so.1.0.0
21.55% [kernel]
18.57% libpython2.6.so.1.0
7.04% libc-2.12.so
6.99% _backend_agg.so
4.72% sshd
1.48% multiarray.so
1.39% libfreetype.so.6.3.22
1.37% perf
0.71% libgobject-2.0.so.0.2200.5
0.53% [tg3]
0.48% libglib-2.0.so.0.2200.5
0.44% libstdc++.so.6.0.13
0.40% libcairo.so.2.10800.8
0.38% libm-2.12.so
0.34% umath.so
0.30% libgdk-x11-2.0.so.0.1800.9
0.22% libpthread-2.12.so
0.20% libgtk-x11-2.0.so.0.1800.9
0.20% librt-2.12.so
0.15% _path.so
0.13% libpango-1.0.so.0.2800.1
0.11% libatlas.so.3.0
0.09% ft2font.so
0.09% libpangoft2-1.0.so.0.2800.1
0.08% libX11.so.6.3.0
0.07% [vdso]
0.06% cyclictest
^C
All the filter lists can be used as well: --dsos, --comms, --symbols,
etc.
The 'perf report' TUI is also reused, being possible to apply all the
zoom operations, do annotation, etc.
This change will allow multiple simplifications in the symbol system as
well, that will be detailed in upcoming changesets.
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-xzaaldxq7zhqrrxdxjifk1mh@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
/*
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* Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
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*
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* Refactored from builtin-top.c, see that files for further copyright notes.
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*
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* Released under the GPL v2. (and only v2, not any later version)
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*/
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#include "cpumap.h"
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#include "event.h"
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#include "evlist.h"
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#include "evsel.h"
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#include "parse-events.h"
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#include "symbol.h"
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#include "top.h"
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#include <inttypes.h>
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#define SNPRINTF(buf, size, fmt, args...) \
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({ \
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size_t r = snprintf(buf, size, fmt, ## args); \
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r > size ? size : r; \
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})
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size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size)
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{
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float samples_per_sec = top->samples / top->delay_secs;
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float ksamples_per_sec = top->kernel_samples / top->delay_secs;
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float esamples_percent = (100.0 * top->exact_samples) / top->samples;
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size_t ret = 0;
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if (!perf_guest) {
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ret = SNPRINTF(bf, size,
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" PerfTop:%8.0f irqs/sec kernel:%4.1f%%"
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" exact: %4.1f%% [", samples_per_sec,
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100.0 - (100.0 * ((samples_per_sec - ksamples_per_sec) /
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samples_per_sec)),
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esamples_percent);
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} else {
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float us_samples_per_sec = top->us_samples / top->delay_secs;
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float guest_kernel_samples_per_sec = top->guest_kernel_samples / top->delay_secs;
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float guest_us_samples_per_sec = top->guest_us_samples / top->delay_secs;
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ret = SNPRINTF(bf, size,
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" PerfTop:%8.0f irqs/sec kernel:%4.1f%% us:%4.1f%%"
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" guest kernel:%4.1f%% guest us:%4.1f%%"
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" exact: %4.1f%% [", samples_per_sec,
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100.0 - (100.0 * ((samples_per_sec - ksamples_per_sec) /
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samples_per_sec)),
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100.0 - (100.0 * ((samples_per_sec - us_samples_per_sec) /
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samples_per_sec)),
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100.0 - (100.0 * ((samples_per_sec -
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guest_kernel_samples_per_sec) /
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samples_per_sec)),
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100.0 - (100.0 * ((samples_per_sec -
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guest_us_samples_per_sec) /
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samples_per_sec)),
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esamples_percent);
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}
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if (top->evlist->nr_entries == 1) {
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struct perf_evsel *first;
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first = list_entry(top->evlist->entries.next, struct perf_evsel, node);
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ret += SNPRINTF(bf + ret, size - ret, "%" PRIu64 "%s ",
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(uint64_t)first->attr.sample_period,
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top->freq ? "Hz" : "");
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}
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ret += SNPRINTF(bf + ret, size - ret, "%s", event_name(top->sym_evsel));
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ret += SNPRINTF(bf + ret, size - ret, "], ");
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if (top->target_pid != -1)
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ret += SNPRINTF(bf + ret, size - ret, " (target_pid: %d",
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top->target_pid);
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else if (top->target_tid != -1)
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ret += SNPRINTF(bf + ret, size - ret, " (target_tid: %d",
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top->target_tid);
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else
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ret += SNPRINTF(bf + ret, size - ret, " (all");
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if (top->cpu_list)
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ret += SNPRINTF(bf + ret, size - ret, ", CPU%s: %s)",
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top->evlist->cpus->nr > 1 ? "s" : "", top->cpu_list);
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else {
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if (top->target_tid != -1)
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ret += SNPRINTF(bf + ret, size - ret, ")");
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else
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ret += SNPRINTF(bf + ret, size - ret, ", %d CPU%s)",
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top->evlist->cpus->nr,
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top->evlist->cpus->nr > 1 ? "s" : "");
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}
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return ret;
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}
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void perf_top__reset_sample_counters(struct perf_top *top)
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{
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top->samples = top->us_samples = top->kernel_samples =
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top->exact_samples = top->guest_kernel_samples =
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top->guest_us_samples = 0;
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}
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