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Upgrade instructions for perf tool.

This commit is contained in:
Max Neunhoeffer 2016-12-19 13:07:21 +01:00
parent 07631c4f2b
commit c4a99800cd
2 changed files with 9 additions and 7 deletions
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2
scripts/perfanalysis.cpp
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@ -1,5 +1,5 @@
// Compile with // Compile with
// g++ perfanalysis.cpp -o perfanalyis -std=c++11 -Wall -O3 // g++ perfanalysis.cpp -o perfanalyis -std=c++14 -Wall -O3
#include <algorithm> #include <algorithm>
#include <iostream> #include <iostream>

14
scripts/setupPerfEvents.sh
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@ -8,24 +8,26 @@
# document operations. Run this script with sudo when the ArangoDB # document operations. Run this script with sudo when the ArangoDB
# process is already running: # process is already running:
# #
# ./setupPerfEvents.sh # sudo ./setupPerfEvents.sh
# #
# Now you are able to recrod the event with: # Now you are able to recrod the event with:
# #
# sudo perf record -e "probe_arangod:*" -aR sleep 60 # sudo perf record -e "probe_arangod:*" -aR
# #
# The above command will get sample data for 60 seconds. A file "perf.data" is # The above command will get sample data indefinitely, hit Ctrl-C when
# written to the current directory. Dump the events in this file with: # the measurement is finished. A file "perf.data" is written to the
# current directory. Dump the events in this file with:
# #
# sudo perf script > perf.history # sudo perf script > perf.history
# #
# This logs the times when individual threads hit the events. # This logs the times when individual threads hit the events.
# Use the program perfanalyis.cpp in this directory in the following way: # Use the program perfanalyis.cpp in this directory in the following way:
# (for compilation instructions see at the top of perfanalysis.cpp)
# #
# sudo ./perfanalyis < perf.history > perf.statistics # ./scripts/perfanalyis < perf.history > perf.statistics
# #
# This will group enter and exit events of functions together, compute the time # This will group enter and exit events of functions together, compute the time
# spent and sort by function. When finised remove all events with: # spent and sort by function. When finished remove all events with:
# #
# sudo perf probe -d "probe_arangod:*" # sudo perf probe -d "probe_arangod:*"
# #