16 Jul, 2011
1 commit
-
Support adding probes on offline kernel modules. This enables
perf-probe to trace kernel-module init functions via perf-probe.
If user gives the path of module with -m option, perf-probe
expects the module is offline.
This feature works with --add, --funcs, and --vars.E.g)
# perf probe -m /lib/modules/`uname -r`/kernel/fs/btrfs/btrfs.ko \
-a "extent_io_init:5 extent_state_cache"
Add new events:
probe:extent_io_init (on extent_io_init:5 with extent_state_cache)
probe:extent_io_init_1 (on extent_io_init:5 with extent_state_cache)You can now use it on all perf tools, such as:
perf record -e probe:extent_io_init_1 -aR sleep 1
Signed-off-by: Masami Hiramatsu
Cc: Peter Zijlstra
Cc: Frederic Weisbecker
Cc: Paul Mackerras
Cc: Ingo Molnar
Cc: Arnaldo Carvalho de Melo
Link: http://lkml.kernel.org/r/20110627072751.6528.10230.stgit@fedora15
Signed-off-by: Steven Rostedt
05 Jul, 2011
1 commit
-
Add an option to perf report/annotate/script to specify which
CPUs to operate on. This enables us to take a single system wide
profile and analyse each CPU (or group of CPUs) in isolation.This was useful when profiling a multiprocess workload where the
bottleneck was on one CPU but this was hidden in the overall
profile. Per process and per thread breakdowns didn't help
because multiple processes were running on each CPU and no
single process consumed an entire CPU.The patch converts the list of CPUs returned by cpu_map__new
into a bitmap for fast lookup. I wanted to use -C to be
consistent with perf top/record/stat, but unfortunately perf
report already uses -C .v2: Incorporate suggestions from David Ahern:
- Added -c to perf script
- Check that SAMPLE_CPU is set when -c is used
- Update documentationv3: Create perf_session__cpu_bitmap()
Signed-off-by: Anton Blanchard
Acked-by: David Ahern
Cc: Arnaldo Carvalho de Melo
Cc: Peter Zijlstra
Cc: Paul Mackerras
Link: http://lkml.kernel.org/r/20110704215750.11647eb9@kryten
Signed-off-by: Ingo Molnar
30 Jun, 2011
1 commit
-
Add "caller/callee" option to support inverted butterfly report,
in the inverted report (with caller option), the call graph start
from the callee's ancestor. Users can use such view to catch system's
performance bottleneck from a sysprof like view. Using this option
with specified sort order like pid gives us high level view of call
graph statistics.Also add "-G" alias for inverted call graph.
Signed-off-by: Sam Liao
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Arnaldo Carvalho de Melo
Cc: Stephane Eranian
Cc: David Ahern
Signed-off-by: Frederic Weisbecker
03 Jun, 2011
3 commits
-
Resolve to a function or variable if possible and if the sym option is
enabled.Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Link: http://lkml.kernel.org/r/1306782503-22002-1-git-send-email-dsahern@gmail.com
Signed-off-by: David Ahern
Signed-off-by: Arnaldo Carvalho de Melo -
The 'sym' option displays both the function name and the DSO it comes
from. Split the display of the dso into a separate option. This allows
display of the ip address and symbol without the dso, thus shortening
line lengths - and decluttering the output a bit.Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Link: http://lkml.kernel.org/r/1306528124-25861-3-git-send-email-dsahern@gmail.com
Signed-off-by: David Ahern
Signed-off-by: Arnaldo Carvalho de Melo -
Currently the "sym" output field is used to dump instruction pointers
and callchain stack. Sample addresses can also be converted to symbols,
so the meaning of "sym" needs to be fixed. This patch adds an "ip"
option and if it is selected the user can also opt to dump symbols for
them. If the user opts to dump IP without syms only the address is
shown.Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Link: http://lkml.kernel.org/r/1306528124-25861-2-git-send-email-dsahern@gmail.com
Signed-off-by: David Ahern
Signed-off-by: Arnaldo Carvalho de Melo
20 May, 2011
1 commit
-
…kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (60 commits)
sched: Fix and optimise calculation of the weight-inverse
sched: Avoid going ahead if ->cpus_allowed is not changed
sched, rt: Update rq clock when unthrottling of an otherwise idle CPU
sched: Remove unused parameters from sched_fork() and wake_up_new_task()
sched: Shorten the construction of the span cpu mask of sched domain
sched: Wrap the 'cfs_rq->nr_spread_over' field with CONFIG_SCHED_DEBUG
sched: Remove unused 'this_best_prio arg' from balance_tasks()
sched: Remove noop in alloc_rt_sched_group()
sched: Get rid of lock_depth
sched: Remove obsolete comment from scheduler_tick()
sched: Fix sched_domain iterations vs. RCU
sched: Next buddy hint on sleep and preempt path
sched: Make set_*_buddy() work on non-task entities
sched: Remove need_migrate_task()
sched: Move the second half of ttwu() to the remote cpu
sched: Restructure ttwu() some more
sched: Rename ttwu_post_activation() to ttwu_do_wakeup()
sched: Remove rq argument from ttwu_stat()
sched: Remove rq->lock from the first half of ttwu()
sched: Drop rq->lock from sched_exec()
...* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
sched: Fix rt_rq runtime leakage bug
24 Apr, 2011
1 commit
-
Neil Brown pointed out that lock_depth somehow escaped the BKL
removal work. Let's get rid of it now.Note that the perf scripting utilities still have a bunch of
code for dealing with common_lock_depth in tracepoints; I have
left that in place in case anybody wants to use that code with
older kernels.Suggested-by: Neil Brown
Signed-off-by: Jonathan Corbet
Cc: Arnd Bergmann
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Cc: Linus Torvalds
Cc: Andrew Morton
Link: http://lkml.kernel.org/r/20110422111910.456c0e84@bike.lwn.net
Signed-off-by: Ingo Molnar
31 Mar, 2011
1 commit
-
Using the commit log for 2c9e45f.
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Tom Zanussi
LKML-Reference:
Signed-off-by: Arnaldo Carvalho de Melo
15 Mar, 2011
4 commits
-
[root@emilia ~]# perf record -a -e sched:* -e timer:timer* sleep 5
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.172 MB perf.data (~7530 samples) ]
[root@emilia ~]# perf evlist
sched:sched_kthread_stop
sched:sched_kthread_stop_ret
sched:sched_wakeup
sched:sched_wakeup_new
sched:sched_switch
sched:sched_migrate_task
sched:sched_process_free
sched:sched_process_exit
sched:sched_wait_task
sched:sched_process_wait
sched:sched_process_fork
sched:sched_stat_wait
sched:sched_stat_sleep
sched:sched_stat_iowait
sched:sched_stat_runtime
sched:sched_pi_setprio
timer:timer_init
timer:timer_start
timer:timer_expire_entry
timer:timer_expire_exit
timer:timer_cancel
[root@emilia ~]#Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Tom Zanussi
LKML-Reference:
Signed-off-by: Arnaldo Carvalho de Melo -
Custom fields set for each type by prepending field argument with type.
For file with multiple event types (e.g., trace and S/W) display of an
event type suppressed by setting output fields to "".e.g.,
perf record -ga -e sched:sched_switch -e cpu-clock -c 10000000 -R -- sleep 1
perf scriptopenssl 11496 [000] 9711.807107: cpu-clock-msecs:
ffffffff810c22dc arch_local_irq_restore ([kernel.kallsyms])
ffffffff810c518c __alloc_pages_nodemask ([kernel.kallsyms])
ffffffff810297b2 pte_alloc_one ([kernel.kallsyms])
ffffffff810d8b98 __pte_alloc ([kernel.kallsyms])
ffffffff810daf07 handle_mm_fault ([kernel.kallsyms])
ffffffff8138763a do_page_fault ([kernel.kallsyms])
ffffffff81384a65 page_fault ([kernel.kallsyms])
7f6130507d70 asn1_check_tlen (/lib64/libcrypto.so.1.0.0c)
0 ()openssl 11496 [000] 9711.808042: sched_switch: prev_comm=openssl ...
kworker/0:0 4 [000] 9711.808067: sched_switch: prev_comm=kworker/...
swapper 0 [001] 9711.808090: sched_switch: prev_comm=kworker/...
sshd 11451 [001] 9711.808185: sched_switch: prev_comm=sshd pre...
swapper 0 [001] 9711.816155: cpu-clock-msecs:
ffffffff81023609 native_safe_halt ([kernel.kallsyms])
ffffffff8100132a cpu_idle ([kernel.kallsyms])
ffffffff8137cf9b start_secondary ([kernel.kallsyms])openssl 11496 [000] 9711.817104: cpu-clock-msecs:
7f61304ad723 AES_cbc_encrypt (/lib64/libcrypto.so.1.0.0c)
7fff3402f950 ()
12f0debc9a785634 ()swapper 0 [001] 9711.826155: cpu-clock-msecs:
ffffffff81023609 native_safe_halt ([kernel.kallsyms])
ffffffff8100132a cpu_idle ([kernel.kallsyms])
ffffffff8137cf9b start_secondary ([kernel.kallsyms])To suppress trace events within the file and use default output for S/W events:
perf script -f trace:or to suppress S/W events and do default display for trace events:
perf script -f sw:Custom field selections:
perf script -f sw:comm,tid,time -f trace:time,traceopenssl 11496 9711.797162:
swapper 0 9711.807071:
openssl 11496 9711.807107:
9711.808042: prev_comm=openssl prev_pid=11496 prev_prio=120 prev_state=R ...
9711.808067: prev_comm=kworker/0:0 prev_pid=4 prev_prio=120 prev_state=S ...
9711.808090: prev_comm=kworker/0:0 prev_pid=0 prev_prio=120 prev_state=R ...
9711.808185: prev_comm=sshd prev_pid=11451 prev_prio=120 prev_state=S ==>...
swapper 0 9711.816155:
openssl 11496 9711.817104:
swapper 0 9711.826155:Acked-by: Frederic Weisbecker
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Thomas Gleixner
LKML-Reference:
Signed-off-by: David Ahern
Signed-off-by: Arnaldo Carvalho de Melo -
Add option to dump symbols found in events.
e.g., perf script -f comm,pid,tid,time,trace,sym
swapper 0/0 537.037184: prev_comm=swapper prev_pid=0 prev_prio=120...
ffffffff81030350 perf_trace_sched_switch ([kernel.kallsyms])
ffffffff81382ac5 schedule ([kernel.kallsyms])
ffffffff8100134a cpu_idle ([kernel.kallsyms])
ffffffff81370b39 rest_init ([kernel.kallsyms])
ffffffff81696c23 start_kernel ([kernel.kallsyms].init.text)
ffffffff816962af x86_64_start_reservations ([kernel.kallsyms].init.text)
ffffffff816963b9 x86_64_start_kernel ([kernel.kallsyms].init.text)sshd 1675/1675 537.037309: prev_comm=sshd prev_pid=1675 prev_prio=120...
ffffffff81030350 perf_trace_sched_switch ([kernel.kallsyms])
ffffffff81382ac5 schedule ([kernel.kallsyms])
ffffffff813837aa schedule_hrtimeout_range_clock ([kernel.kallsyms])
ffffffff81383886 schedule_hrtimeout_range ([kernel.kallsyms])
ffffffff8110c4f9 poll_schedule_timeout ([kernel.kallsyms])
ffffffff8110cd20 do_select ([kernel.kallsyms])
ffffffff8110ced8 core_sys_select ([kernel.kallsyms])
ffffffff8110d00d sys_select ([kernel.kallsyms])
ffffffff81002bc2 system_call ([kernel.kallsyms])
7f1647e56e93 __GI_select (/lib64/libc-2.12.90.so)netstat 1692/1692 537.038664: prev_comm=netstat prev_pid=1692 prev_prio=...
ffffffff81030350 perf_trace_sched_switch ([kernel.kallsyms])
ffffffff81382ac5 schedule ([kernel.kallsyms])
ffffffff81002c3a sysret_careful ([kernel.kallsyms])
7f7a6cd1b210 __GI___libc_read (/lib64/libc-2.12.90.so)Acked-by: Frederic Weisbecker
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Thomas Gleixner
LKML-Reference:
Signed-off-by: David Ahern
Signed-off-by: Arnaldo Carvalho de Melo -
Allow a user to select which fields to print to stdout for event data.
Options include comm (command name), tid (thread id), pid (process id),
time (perf timestamp), cpu, event (for event name), and trace (for
trace data).Default is set to maintain compatibility with current output; this
feature does alter output format slightly -- no '-' between command
and pid/tid.Thanks to Frederic Weisbecker for detailed suggestions on this approach.
Examples (output compressed)
1. trace, default format
perf record -ga -e sched:sched_switch
perf scriptswapper 0 [000] 537.037184: sched_switch: prev_comm=swapper prev_pid=0...
sshd 1675 [000] 537.037309: sched_switch: prev_comm=sshd prev_pid=1675...
netstat 1692 [001] 537.038664: sched_switch: prev_comm=netstat prev_pid=1692...2. trace, custom format
perf record -ga -e sched:sched_switch
perf script -f comm,pid,time,trace
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Thomas Gleixner
LKML-Reference:
Signed-off-by: David Ahern
Signed-off-by: Arnaldo Carvalho de Melo
23 Feb, 2011
1 commit
-
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Marcin Slusarz
Signed-off-by: Arnaldo Carvalho de Melo
18 Feb, 2011
1 commit
-
The man page has the details, here are some examples:
[root@emilia ~]# perf list *fault* *:*wait*
List of pre-defined events (to be used in -e):
page-faults OR faults [Software event]
minor-faults [Software event]
major-faults [Software event]
alignment-faults [Software event]
emulation-faults [Software event]radeon:radeon_fence_wait_begin [Tracepoint event]
radeon:radeon_fence_wait_end [Tracepoint event]
writeback:wbc_writeback_wait [Tracepoint event]
writeback:wbc_balance_dirty_wait [Tracepoint event]
writeback:writeback_congestion_wait [Tracepoint event]
writeback:writeback_wait_iff_congested [Tracepoint event]
sched:sched_wait_task [Tracepoint event]
sched:sched_process_wait [Tracepoint event]
sched:sched_stat_wait [Tracepoint event]
sched:sched_stat_iowait [Tracepoint event]
syscalls:sys_enter_epoll_wait [Tracepoint event]
syscalls:sys_exit_epoll_wait [Tracepoint event]
syscalls:sys_enter_epoll_pwait [Tracepoint event]
syscalls:sys_exit_epoll_pwait [Tracepoint event]
syscalls:sys_enter_rt_sigtimedwait [Tracepoint event]
syscalls:sys_exit_rt_sigtimedwait [Tracepoint event]
syscalls:sys_enter_waitid [Tracepoint event]
syscalls:sys_exit_waitid [Tracepoint event]
syscalls:sys_enter_wait4 [Tracepoint event]
syscalls:sys_exit_wait4 [Tracepoint event]
syscalls:sys_enter_waitpid [Tracepoint event]
syscalls:sys_exit_waitpid [Tracepoint event]
[root@emilia ~]#Suggested-by: Ingo Molnar
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Tom Zanussi
LKML-Reference:
Signed-off-by: Arnaldo Carvalho de Melo
17 Feb, 2011
2 commits
-
Since "perf probe --add" supports function@filename syntax, --line
option should also support it.Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Franck Bui-Huu
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: linux-kernel@vger.kernel.org
LKML-Reference:
Signed-off-by: Masami Hiramatsu
Signed-off-by: Arnaldo Carvalho de Melo -
The perf makefile is nicely complete except for
a) an uninstall option
b) a 'make help' descriptionThis patch implements b)
it also comments out other non-working makefile targetsSigned-off-by: Jesse Brandeburg
LKML-Reference:
Signed-off-by: Arnaldo Carvalho de Melo
16 Feb, 2011
1 commit
-
This patch adds the ability to filter monitoring based on container groups
(cgroups) for both perf stat and perf record. It is possible to monitor
multiple cgroup in parallel. There is one cgroup per event. The cgroups to
monitor are passed via a new -G option followed by a comma separated list of
cgroup names.The cgroup filesystem has to be mounted. Given a cgroup name, the perf tool
finds the corresponding directory in the cgroup filesystem and opens it. It
then passes that file descriptor to the kernel.Example:
$ perf stat -B -a -e cycles:u,cycles:u,cycles:u -G test1,,test2 -- sleep 1
Performance counter stats for 'sleep 1':2,368,667,414 cycles test1
2,369,661,459 cycles
cycles test21.001856890 seconds time elapsed
Signed-off-by: Stephane Eranian
Signed-off-by: Peter Zijlstra
LKML-Reference:
Signed-off-by: Ingo Molnar
28 Jan, 2011
2 commits
-
Add filters support for available function list.
Default filter is "!_*" for filtering out local-purpose symbols.
e.g.:
# perf probe --filter="add*" -F
add_disk
add_disk_randomness
add_input_randomness
add_interrupt_randomness
add_memory
add_page_to_unevictable_list
add_page_wait_queue
...Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Chase Douglas
Cc: Franck Bui-Huu
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: Steven Rostedt
LKML-Reference:
Signed-off-by: Masami Hiramatsu
Signed-off-by: Arnaldo Carvalho de Melo -
Add filters support for available variable list.
Default filter is "!__k???tab_*&!__crc_*" for filtering out
automatically generated symbols.The format of filter rule is "[!]GLOBPATTERN", so you can use wild
cards. If the filter rule starts with '!', matched variables are filter
out.e.g.:
# perf probe -V schedule --externs --filter=cpu*
Available variables at schedule
@
cpumask_var_t cpu_callout_mask
cpumask_var_t cpu_core_map
cpumask_var_t cpu_isolated_map
cpumask_var_t cpu_sibling_map
int cpu_number
long unsigned int* cpu_bit_bitmap
...Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Chase Douglas
Cc: Franck Bui-Huu
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: Steven Rostedt
LKML-Reference:
Signed-off-by: Masami Hiramatsu
[ committer note: Removed the elf.h include as it was fixed up in e80711c]
Signed-off-by: Arnaldo Carvalho de Melo
24 Jan, 2011
1 commit
-
Add --funcs to show available functions in symtab.
Originally this feature came from Srikar's uprobes patches
( http://lkml.org/lkml/2010/8/27/244 )e.g.
...
__ablkcipher_walk_complete
__absent_pages_in_range
__account_scheduler_latency
__add_pages
__alloc_pages_nodemask
__alloc_percpu
__alloc_reserved_percpu
__alloc_skb
__alloc_workqueue_key
__any_online_cpu
__ata_ehi_push_desc
...This also supports symbols in module, e.g.
...
cleanup_module
cpuid_maxphyaddr
emulate_clts
emulate_instruction
emulate_int_real
emulate_invlpg
emulator_get_dr
emulator_set_dr
emulator_task_switch
emulator_write_emulated
emulator_write_phys
fx_init
...Original-patch-from: Srikar Dronamraju
Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Franck Bui-Huu
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: Steven Rostedt
LKML-Reference:
Signed-off-by: Masami Hiramatsu
[ committer note: Add missing elf.h for STB_GLOBAL that broke a RHEL4 build ]
Signed-off-by: Arnaldo Carvalho de Melo
13 Jan, 2011
1 commit
-
Sometimes there is a need to use perf in "live-log" mode. The problem
is, for seldom events, actual info output is largely delayed because
perf-record reads sample data in whole pages.So for such scenarious, add flag for perf-record to go in "nodelay"
mode. To track e.g. what's going on in icmp_rcv while ping is running
Use it with something like this:(1) $ perf probe -L icmp_rcv | grep -U8 '^ *43\>'
goto error;
}
38 if (!pskb_pull(skb, sizeof(*icmph)))
goto error;
icmph = icmp_hdr(skb);43 ICMPMSGIN_INC_STATS_BH(net, icmph->type);
/*
* 18 is the highest 'known' ICMP type. Anything else is a mystery
*
* RFC 1122: 3.2.2 Unknown ICMP messages types MUST be silently
* discarded.
*/
50 if (icmph->type > NR_ICMP_TYPES)
goto error;$ perf probe icmp_rcv:43 'type=icmph->type'
(2) $ cat trace-icmp.py
[...]
def trace_begin():
print "in trace_begin"def trace_end():
print "in trace_end"def probe__icmp_rcv(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
__probe_ip, type):
print_header(event_name, common_cpu, common_secs, common_nsecs,
common_pid, common_comm)print "__probe_ip=%u, type=%u\n" % \
(__probe_ip, type),
[...](3) $ perf record -a -D -e probe:icmp_rcv -o - | \
perf script -i - -s trace-icmp.pyThanks to Peter Zijlstra for pointing how to do it.
Cc: Arnaldo Carvalho de Melo
Cc: Frederic Weisbecker
Cc: Ingo Molnar , Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Tom Zanussi
LKML-Reference:
Signed-off-by: Kirill Smelkov
Signed-off-by: Arnaldo Carvalho de Melo
22 Dec, 2010
2 commits
-
$ perf-probe -L sched.c
is currently allowed but not documented.
Cc: Masami Hiramatsu
LKML-Reference:
Signed-off-by: Franck Bui-Huu
Signed-off-by: Arnaldo Carvalho de Melo -
The symfs argument allows analysis of perf.data file using a locally accessible
filesystem tree with debug symbols - e.g., tree created during image builds,
sshfs mount, loop mounted KVM disk images, USB keys, initrds, etc. Anything
with an OS tree can be analyzed from anywhere without the need to populate a
local data store with build-ids.Commiter notes:
o Fixed up symfs="/" variants handling.
o prefixed DSO__ORIG_GUEST_KMODULE case with symfs too, avoiding use of files
outside the symfs directory.LKML-Reference:
Signed-off-by: David Ahern
Signed-off-by: Arnaldo Carvalho de Melo
09 Dec, 2010
1 commit
-
This is useful for analyzing a perf data file on a different system than
the one data was collected on and still include symbols from loaded
kernel modules in the output.Commiter note: Updated the man page accordingly.
LKML-Reference:
Signed-off-by: David Ahern
Signed-off-by: Arnaldo Carvalho de Melo
05 Dec, 2010
1 commit
-
So that we can use -T == --timestamp, asking for PERF_SAMPLE_TIME:
$ perf record -aT
$ perf report -D | grep PERF_RECORD_
3 5951915425 0x47530 [0x58]: PERF_RECORD_SAMPLE(IP, 1): 16811/16811: 0xffffffff8138c1a2 period: 215979 cpu:3
3 5952026879 0x47588 [0x90]: PERF_RECORD_SAMPLE(IP, 1): 16811/16811: 0xffffffff810cb480 period: 215979 cpu:3
3 5952059959 0x47618 [0x38]: PERF_RECORD_FORK(6853:6853):(16811:16811)
3 5952138878 0x47650 [0x78]: PERF_RECORD_SAMPLE(IP, 1): 16811/16811: 0xffffffff811bac35 period: 431478 cpu:3
3 5952375068 0x476c8 [0x30]: PERF_RECORD_COMM: find:6853
3 5952395923 0x476f8 [0x50]: PERF_RECORD_MMAP 6853/6853: [0x400000(0x25000) @ 0]: /usr/bin/find
3 5952413756 0x47748 [0xa0]: PERF_RECORD_SAMPLE(IP, 1): 6853/6853: 0xffffffff810d080f period: 859332 cpu:3
3 5952419837 0x477e8 [0x58]: PERF_RECORD_MMAP 6853/6853: [0x3f44600000(0x21d000) @ 0]: /lib64/ld-2.5.so
3 5952437929 0x47840 [0x48]: PERF_RECORD_MMAP 6853/6853: [0x7fff7e1c9000(0x1000) @ 0x7fff7e1c9000]: [vdso]
3 5952570127 0x47888 [0x58]: PERF_RECORD_MMAP 6853/6853: [0x3f46200000(0x218000) @ 0]: /lib64/libselinux.so.1
3 5952623637 0x478e0 [0x58]: PERF_RECORD_MMAP 6853/6853: [0x3f44a00000(0x356000) @ 0]: /lib64/libc-2.5.so
3 5952675720 0x47938 [0x58]: PERF_RECORD_MMAP 6853/6853: [0x3f44e00000(0x204000) @ 0]: /lib64/libdl-2.5.so
3 5952710080 0x47990 [0x58]: PERF_RECORD_MMAP 6853/6853: [0x3f45a00000(0x246000) @ 0]: /lib64/libsepol.so.1
3 5952847802 0x479e8 [0x58]: PERF_RECORD_SAMPLE(IP, 1): 6853/6853: 0xffffffff813897f0 period: 1142536 cpu:3
First column is the cpu and the second the timestamp.
That way we can investigate problems in the event stream.
If the new perf binary is run on an older kernel, it will disable this feature
automatically.Tested-by: Thomas Gleixner
Reviewed-by: Thomas Gleixner
Acked-by: Ian Munsie
Acked-by: Thomas Gleixner
Cc: Frédéric Weisbecker
Cc: Ian Munsie
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Paul Mackerras
Cc: Stephane Eranian
LKML-Reference:
Signed-off-by: Arnaldo Carvalho de Melo
02 Dec, 2010
14 commits
-
…inux-2.6 into perf/core
-
This patch adds an option (-x/--field-separator) to print counts using a
CSV-style output. The user can pass a custom separator. This makes it very easy
to import counts directly into your favorite spreadsheet without having to
write scripts.Example:
$ perf stat --field-separator=, -a -- sleep 1
4009.961740,task-clock-msecs
13,context-switches
2,CPU-migrations
189,page-faults
9596385684,cycles
3493659441,instructions
872897069,branches
41562,branch-misses
22424,cache-references
1289,cache-missesWorks also in non-aggregated mode:
$ perf stat -x , -a -A -- sleep 1
CPU0,1002.526168,task-clock-msecs
CPU1,1002.528365,task-clock-msecs
CPU2,1002.523360,task-clock-msecs
CPU3,1002.519878,task-clock-msecs
CPU0,1,context-switches
CPU1,5,context-switches
CPU2,5,context-switches
CPU3,6,context-switches
CPU0,0,CPU-migrations
CPU1,1,CPU-migrations
CPU2,0,CPU-migrations
CPU3,1,CPU-migrations
CPU0,2,page-faults
CPU1,6,page-faults
CPU2,9,page-faults
CPU3,174,page-faults
CPU0,2399439771,cycles
CPU1,2380369063,cycles
CPU2,2399142710,cycles
CPU3,2373161192,cycles
CPU0,872900618,instructions
CPU1,873030960,instructions
CPU2,872714525,instructions
CPU3,874460580,instructions
CPU0,221556839,branches
CPU1,218134342,branches
CPU2,218161730,branches
CPU3,218284093,branches
CPU0,18556,branch-misses
CPU1,1449,branch-misses
CPU2,3447,branch-misses
CPU3,12714,branch-misses
CPU0,8330,cache-references
CPU1,313844,cache-references
CPU2,47993728,cache-references
CPU3,826481,cache-references
CPU0,272,cache-misses
CPU1,5360,cache-misses
CPU2,1342193,cache-misses
CPU3,13992,cache-missesThis second version adds the ability to name a separator and uses
field-separator as the long option to be consistent with perf report.Commiter note: Since we enabled --big-num by default in 201e0b0 and -x can't be
used with it, we need to notice if the user explicitely enabled or disabled -B,
add code to disable big_num if the user didn't explicitely set --big_num when
-x is used.Cc: David S. Miller
Cc: Frederik Weisbecker
Cc: Ingo Molnar
Cc: paulus@samba.org
Cc: Peter Zijlstra
Cc: Robert Richter
LKML-Reference:
Signed-off-by: Stephane Eranian
Signed-off-by: Arnaldo Carvalho de Melo -
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Shawn Bohrer
Signed-off-by: Arnaldo Carvalho de Melo -
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Shawn Bohrer
Signed-off-by: Arnaldo Carvalho de Melo -
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Shawn Bohrer
Signed-off-by: Arnaldo Carvalho de Melo -
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Shawn Bohrer
Signed-off-by: Arnaldo Carvalho de Melo -
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Shawn Bohrer
Signed-off-by: Arnaldo Carvalho de Melo -
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Shawn Bohrer
Signed-off-by: Arnaldo Carvalho de Melo -
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Shawn Bohrer
Signed-off-by: Arnaldo Carvalho de Melo -
Acked-by: Masami Hiramatsu
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Shawn Bohrer
Signed-off-by: Arnaldo Carvalho de Melo -
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Shawn Bohrer
Signed-off-by: Arnaldo Carvalho de Melo -
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Shawn Bohrer
Signed-off-by: Arnaldo Carvalho de Melo -
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Shawn Bohrer
Signed-off-by: Arnaldo Carvalho de Melo -
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Shawn Bohrer
Signed-off-by: Arnaldo Carvalho de Melo
