Changeset 3fea752 in mainline for uspace/lib/c

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)

Location:

uspace/lib/c

Files:

• Makefile (modified) (2 diffs)
• include/perf.h (added)
• include/types/casting.h (added)
• test/casting.c (added)
• test/main.c (modified) (2 diffs)
• test/perf.c (added)

uspace/lib/c/Makefile

@@ -189 +189 @@
 TEST_SOURCES = \
         test/adt/circ_buf.c \
+        test/casting.c \
         test/fibril/timer.c \
         test/main.c \
@@ -196 +197 @@
         test/stdio/scanf.c \
         test/odict.c \
+        test/perf.c \
         test/perm.c \
         test/qsort.c \

uspace/lib/c/test/main.c

@@ -32 +32 @@
 PCUT_INIT;
 
+PCUT_IMPORT(casting);
 PCUT_IMPORT(circ_buf);
 PCUT_IMPORT(fibril_timer);
@@ -37 +38 @@
 PCUT_IMPORT(mem);
 PCUT_IMPORT(odict);
+PCUT_IMPORT(perf);
 PCUT_IMPORT(perm);
 PCUT_IMPORT(qsort);