Changeset 3fea752 in mainline for uspace/Makefile

Timestamp:

2019-01-28T07:46:58Z (6 years ago)

Author:

Vojtech Horky <vojtech.horky@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

67bcd81

Parents:

182487c6 (diff), 871cff9a (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge changes to benchmarking tool (PR #151)

This merges refactoring and other changes to the perf/hbench tool.

The changes include:

• Factor out all the duplicate code in individual benchmarks into a common harness
• Properly compute average throughput
  • Added an awful function to compute square root until proper implementation is available (for the precision we need it is quite sufficient) [sqrt is needed to compute standard deviation]
• Added option to dump data to CSV for further processing
• Added option to specify minimal duration of a loop and number of runs to execute.
• Added simple benchmark for fibril mutexes
• Merged benchmarks from bnchmark application and removed it
  • These benchmarks are FS-related and IMHO are quite badly designed (they really stress only the block cache and not the FS on top of it; but still they might be useful as IPC benchmark of large data volumes)
• Renamed perf to hbench to stress that it is a benchmarking application rather than a generic performance measurement tool (compared to perf in GNU/Linux)
• Extended documentation a little bit
• Added function for measuring wall-clock time (internally pass-through to uptime but available for other applications as the right API for this in HelenOS)

File:

• uspace/Makefile (modified) (3 diffs)

uspace/Makefile

@@ -38 +38 @@
         app/bithenge \
         app/blkdump \
-        app/bnchmark \
         app/contacts \
         app/corecfg \
@@ -51 +50 @@
         app/getterm \
         app/gunzip \
+        app/hbench \
         app/init \
         app/inet \
@@ -68 +68 @@
         app/nterm \
         app/pci \
-        app/perf \
         app/redir \
         app/sbi \