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6 Commits

Author SHA1 Message Date
Eitan Adler
38033d4c5c pmc: remove trailing whitespace 
Reported by:	swills
 2018-06-13 09:17:04 +00:00
Eitan Adler
32b68c46fa pmc: mark some dead functions as such 
Also change a single instance of the comma operator to a semi-colon.

Reviewed by:	mmacy
 2018-06-09 04:54:36 +00:00
Matt Macy
b2ca2e50b9 hwpmc: add summary command and further metadata extensions 
metadata changes:
- log pmc sample rate with pmcallocate
- log proc flags with thread / process logging
  to identify user vs kernel threads

fixes:
- use log cpuid to translate event id to event name

Implement rudimentary summary command to track sample
counts by thread and process name within a pmc log.

% make -j4 buildkernel >& /dev/null &
% sudo pmcstat -S unhalted_core_cycles -S llc-misses -O foo sleep 15
% pmc summary foo
cpu_clk_unhalted.thread_p_any:
        idle: 138108207162
        clang-6.0: 105336158004
        sh: 72340108510
        make: 8642012963
        kernel: 7754011631
longest_lat_cache.miss:
        clang-6.0: 87502625
        sh: 40901227
        make: 5500165
        kernel: 3300099
        awk: 2000060

%  pmc summary -f ~/foo
idx: 278 name: cpu_clk_unhalted.thread_p_any rate: 2000003
idle: 69054
clang-6.0: 52668
sh: 36170
make: 4321
kernel: 3877
hwpmc: proc(7445): 3319
awk: 1289
xargs: 357
rand_harvestq: 181
mtree: 102
intr: 53
zfskern: 31
usb: 7
pagedaemon: 4
ntpd: 3
syslogd: 1
acpi_thermal: 1
logger: 1
syncer: 1
snmptrapd: 1
sleep: 1
idx: 17 name: longest_lat_cache.miss rate: 100003
clang-6.0: 875
sh: 409
make: 55
kernel: 33
awk: 20
hwpmc: proc(7445): 14
xargs: 9
idle: 8
intr: 3
zfskern: 2
 2018-06-06 02:48:09 +00:00
Matt Macy
bfb46e2ba8 pmc: add filter command 
pmc filter allows the user to select event types, threads, and processes from
a sample.

% pmcstat -S unhalted_core_cycles -S llc-misses -S -S  resource_stalls.any -O pmc.log
% pmc filter -e llc-misses pmc.log pmc-llc-misses.log
% pmc filter -e unhalted_core_cycles -t 100339  pmc.log pmc-core-cycles.log
etc...
% pmcstat -R pmc-core-cycles.log -G pmc-core-cycles.stacks
 2018-06-04 04:59:48 +00:00
Matt Macy
c8d23c138f pmc: add list-events command 2018-06-01 00:45:59 +00:00
Matt Macy
3554f22e67 pmc: Add new sub-command structured "pmc" utility 
This will manage pmc functionality with a more
manageable structure of subcommands rather than the
gradually accreted spaghetti logic of overlapping flags
that exists in pmcstat.

This is intended to ultimately have all the same functionality
as pmcannotate+pmccontrol+pmcstat. Currently it just has
"stat" and "system-stat" - counters for the process itself and counters
for the system as a whole respectively (i.e. system-stat includes kernel
threads). Note that the rusage results (page faults/context switches/
user/sys) for stat-system will not account for the system as a whole -
only for the child process specified on the command line.

Implementing stat was suggested by mjg@ and the output is based on that
from Linux's "perf stat".

% pmc stat -- make -j32 buildkernel -DNO_MODULES  -ss > /dev/null
         9598393  page faults           #       0.674 M/sec
          387085  voluntary csw         #       0.027 M/sec
          106989  involuntary csw       #       0.008 M/sec
   2763965982317  cycles
   2542953049760  instructions          #       0.920 inst/cycle
    511562750157  branches
     12917006881  branch-misses         #       2.525%
     17944429878  cache-references      #       0.007 refs/inst
      2205119560  cache-misses          #       12.289%
           43.74  real                  #       2019.72% cpu
          795.09  user                  #       1817.72% cpu
           88.35  sys                   #       202.00% cpu

% make -j32 buildkernel -DNO_MODULES  -ss > /dev/null &
% sudo pmc stat-system cat
^C             103  page faults         #       0.811 M/sec
               4  voluntary csw         #       0.031 M/sec
               0  involuntary csw       #       0.000 M/sec
   2843639070514  cycles
   2606171217438  instructions          #       0.916 inst/cycle
    522450422783  branches
     13092862839  branch-misses         #       2.506%
     18592101113  cache-references      #       0.007 refs/inst
      2562878667  cache-misses          #       13.785%
           44.85  real                  #       0.00% cpu
            0.00  user                  #       0.00% cpu
            0.00  sys                   #       0.00% cpu
 2018-05-29 20:28:34 +00:00