Changeset 3fea752 in mainline for uspace/app/hbench/benchlist.c

Timestamp:

2019-01-28T07:46:58Z (5 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/app/hbench/benchlist.c (moved) (moved from uspace/app/perf/perf.h ) (2 diffs)

uspace/app/hbench/benchlist.c

@@ -1 +1 @@
 /*
  * Copyright (c) 2018 Jiri Svoboda
+ * Copyright (c) 2018 Vojtech Horky
  * All rights reserved.
  *
@@ -27 +28 @@
  */
 
-/** @addtogroup perf
+/** @addtogroup hbench
  * @{
  */
-/** @file
+/**
+ * @file
  */
 
-#ifndef PERF_H_
-#define PERF_H_
+#include <stdlib.h>
+#include "hbench.h"
 
-#include <stdbool.h>
+benchmark_t *benchmarks[] = {
+        &benchmark_dir_read,
+        &benchmark_fibril_mutex,
+        &benchmark_file_read,
+        &benchmark_malloc1,
+        &benchmark_malloc2,
+        &benchmark_ns_ping,
+        &benchmark_ping_pong
+};
 
-typedef const char *(*benchmark_entry_t)(void);
-
-typedef struct {
-        const char *name;
-        const char *desc;
-        benchmark_entry_t entry;
-} benchmark_t;
-
-extern const char *bench_malloc1(void);
-extern const char *bench_malloc2(void);
-extern const char *bench_ns_ping(void);
-extern const char *bench_ping_pong(void);
-
-extern benchmark_t benchmarks[];
-
-#endif
+size_t benchmark_count = sizeof(benchmarks) / sizeof(benchmarks[0]);
 
 /** @}