From: Xiao Guangrong <xiaoguangr...@tencent.com>
It's the benhcmark of threaded-workqueue, also it's a good
example to show how threaded-workqueue is used
Signed-off-by: Xiao Guangrong <xiaoguangr...@tencent.com>
---
tests/Makefile.include | 5 +-
tests/threaded-workqueue-bench.c | 256 +++++++++++++++++++++++++++++++++++++++
2 files changed, 260 insertions(+), 1 deletion(-)
create mode 100644 tests/threaded-workqueue-bench.c
diff --git a/tests/Makefile.include b/tests/Makefile.include
index d2e577eabb..a4deb210ab 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -499,7 +499,8 @@ test-obj-y = tests/check-qnum.o tests/check-qstring.o
tests/check-qdict.o \
tests/test-rcu-tailq.o \
tests/test-qdist.o tests/test-shift128.o \
tests/test-qht.o tests/qht-bench.o tests/test-qht-par.o \
- tests/atomic_add-bench.o tests/atomic64-bench.o
+ tests/atomic_add-bench.o tests/atomic64-bench.o \
+ tests/threaded-workqueue-bench.o
$(test-obj-y): QEMU_INCLUDES += -Itests
QEMU_CFLAGS += -I$(SRC_PATH)/tests
@@ -555,6 +556,8 @@ tests/qht-bench$(EXESUF): tests/qht-bench.o
$(test-util-obj-y)
tests/test-bufferiszero$(EXESUF): tests/test-bufferiszero.o $(test-util-obj-y)
tests/atomic_add-bench$(EXESUF): tests/atomic_add-bench.o $(test-util-obj-y)
tests/atomic64-bench$(EXESUF): tests/atomic64-bench.o $(test-util-obj-y)
+tests/threaded-workqueue-bench$(EXESUF): tests/threaded-workqueue-bench.o
migration/qemu-file.o \
+ $(test-util-obj-y)
tests/fp/%:
$(MAKE) -C $(dir $@) $(notdir $@)
diff --git a/tests/threaded-workqueue-bench.c b/tests/threaded-workqueue-bench.c
new file mode 100644
index 0000000000..88026f1a8f
--- /dev/null
+++ b/tests/threaded-workqueue-bench.c
@@ -0,0 +1,256 @@
+/*
+ * Threaded Workqueue Benchmark
+ *
+ * Author:
+ * Xiao Guangrong <xiaoguangr...@tencent.com>
+ *
+ * Copyright(C) 2018 Tencent Corporation.
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
+ * See the COPYING.LIB file in the top-level directory.
+ */
+#include <zlib.h>
+
+#include "qemu/osdep.h"
+#include "exec/cpu-common.h"
+#include "qemu/error-report.h"
+#include "migration/qemu-file.h"
+#include "qemu/threaded-workqueue.h"
+
+#define PAGE_SHIFT 12
+#define PAGE_SIZE (1 << PAGE_SHIFT)
+#define DEFAULT_THREAD_NR 2
+#define DEFAULT_MEM_SIZE 1
+#define DEFAULT_REPEATED_COUNT 3
+
+static ssize_t test_writev_buffer(void *opaque, struct iovec *iov, int iovcnt,
+ int64_t pos)
+{
+ int i, size = 0;
+
+ for (i = 0; i < iovcnt; i++) {
+ size += iov[i].iov_len;
+ }
+ return size;
+}
+
+static int test_fclose(void *opaque)
+{
+ return 0;
+}
+
+static const QEMUFileOps test_write_ops = {
+ .writev_buffer = test_writev_buffer,
+ .close = test_fclose
+};
+
+static QEMUFile *dest_file;
+
+static const QEMUFileOps empty_ops = { };
+
+struct CompressData {
+ uint8_t *ram_addr;
+ QEMUFile *file;
+ z_stream stream;
+};
+typedef struct CompressData CompressData;
+
+static int compress_request_size(void)
+{
+ return sizeof(CompressData);
+}
+
+static int compress_request_init(void *request)
+{
+ CompressData *cd = request;
+
+ if (deflateInit(&cd->stream, 1) != Z_OK) {
+ return -1;
+ }
+ cd->file = qemu_fopen_ops(NULL, &empty_ops);
+ return 0;
+}
+
+static void compress_request_uninit(void *request)
+{
+ CompressData *cd = request;
+
+ qemu_fclose(cd->file);
+ deflateEnd(&cd->stream);
+}
+
+static void compress_thread_data_handler(void *request)
+{
+ CompressData *cd = request;
+ int blen;
+
+ blen = qemu_put_compression_data(cd->file, &cd->stream, cd->ram_addr,
+ PAGE_SIZE);
+ if (blen < 0) {
+ error_report("compressed data failed!");
+ qemu_file_set_error(dest_file, blen);
+ }
+}
+
+struct CompressStats {
+ unsigned long pages;
+ unsigned long compressed_size;
+};
+typedef struct CompressStats CompressStats;
+
+static CompressStats comp_stats;
+
+static void compress_thread_data_done(void *request)
+{
+ CompressData *cd = request;
+ int bytes_xmit;
+
+ bytes_xmit = qemu_put_qemu_file(dest_file, cd->file);
+
+ comp_stats.pages++;
+ comp_stats.compressed_size += bytes_xmit;
+}
+
+static ThreadedWorkqueueOps ops = {
+ .thread_get_request_size = compress_request_size,
+ .thread_request_init = compress_request_init,
+ .thread_request_uninit = compress_request_uninit,
+ .thread_request_handler = compress_thread_data_handler,
+ .thread_request_done = compress_thread_data_done,
+};
+
+static void compress_threads_save_cleanup(Threads *threads)
+{
+ threaded_workqueue_destroy(threads);
+ qemu_fclose(dest_file);
+}
+
+static Threads *compress_threads_save_setup(int threads_nr, int requests_nr)
+{
+ Threads *compress_threads;
+
+ dest_file = qemu_fopen_ops(NULL, &test_write_ops);
+ compress_threads = threaded_workqueue_create("compress", threads_nr,
+ requests_nr, &ops);
+ assert(compress_threads);
+ return compress_threads;
+}
+
+static void compress_page_with_multi_thread(Threads *threads, uint8_t *addr)
+{
+ CompressData *cd;
+
+retry:
+ cd = threaded_workqueue_get_request(threads);
+ if (!cd) {
+ goto retry;
+ }
+
+ cd->ram_addr = addr;
+ threaded_workqueue_submit_request(threads, cd);
+}
+
+static void run(Threads *threads, uint8_t *mem, unsigned long mem_size,
+ int repeated_count)
+{
+ uint8_t *ptr = mem, *end = mem + mem_size;
+ uint64_t start_ts, spend, total_ts = 0, pages = mem_size >> PAGE_SHIFT;
+ double rate;
+ int i;
+
+ for (i = 0; i < repeated_count; i++) {
+ ptr = mem;
+ memset(&comp_stats, 0, sizeof(comp_stats));
+
+ start_ts = g_get_monotonic_time();
+ for (ptr = mem; ptr < end; ptr += PAGE_SIZE) {
+ *ptr = 0x10;
+ compress_page_with_multi_thread(threads, ptr);
+ }
+ threaded_workqueue_wait_for_requests(threads);
+ spend = g_get_monotonic_time() - start_ts;
+ total_ts += spend;
+
+ if (comp_stats.pages != pages) {
+ printf("ERROR: pages are compressed %ld, expect %ld.\n",
+ comp_stats.pages, pages);
+ exit(-1);
+ }
+
+ rate = (double)(comp_stats.pages * PAGE_SIZE) /
+ comp_stats.compressed_size;
+ printf("RUN %d: Request # %ld Cost %ld, Compression Rate %f.\n", i,
+ comp_stats.pages, spend, rate);
+ }
+
+ printf("AVG: Time Cost %ld.\n", total_ts / repeated_count);
+}
+
+static void usage(const char *arg0)
+{
+ printf("\nThreaded Workqueue Benchmark.\n");
+ printf("Usage:\n");
+ printf(" %s [OPTIONS]\n", arg0);
+ printf("Options:\n");
+ printf(" -t the number of threads (default %d).\n",
+ DEFAULT_THREAD_NR);
+ printf(" -r: the number of requests handled by each thread
(default %d).\n",
+ DEFAULT_THREAD_REQUEST_NR);
+ printf(" -m: the size of the memory (G) used to test (default
%dG).\n",
+ DEFAULT_MEM_SIZE);
+ printf(" -c: the repeated count (default %d).\n",
+ DEFAULT_REPEATED_COUNT);
+ printf(" -h show this help info.\n");
+}
+
+int main(int argc, char *argv[])
+{
+ int c, threads_nr, requests_nr, repeated_count;
+ unsigned long mem_size;
+ uint8_t *mem;
+ Threads *threads;
+
+ threads_nr = DEFAULT_THREAD_NR;
+ requests_nr = DEFAULT_THREAD_REQUEST_NR;
+ mem_size = DEFAULT_MEM_SIZE;
+ repeated_count = DEFAULT_REPEATED_COUNT;
+
+ for (;;) {
+ c = getopt(argc, argv, "t:r:m:c:h");
+ if (c < 0) {
+ break;
+ }
+
+ switch (c) {
+ case 't':
+ threads_nr = atoi(optarg);
+ break;
+ case 'r':
+ requests_nr = atoi(optarg);
+ break;
+ case 'm':
+ mem_size = atol(optarg);
+ break;
+ case 'c':
+ repeated_count = atoi(optarg);
+ break;
+ default:
+ printf("Unkown option: %c.\n", c);
+ case 'h':
+ usage(argv[0]);
+ return -1;
+ }
+ }
+
+ printf("Run the benchmark: threads %d requests-per-thread: %d memory %ldG
repeat %d.\n",
+ threads_nr, requests_nr, mem_size, repeated_count);
+
+ mem_size = mem_size << 30;
+ mem = qemu_memalign(PAGE_SIZE, mem_size);
+ memset(mem, 0, mem_size);
+
+ threads = compress_threads_save_setup(threads_nr, requests_nr);
+ run(threads, mem, mem_size, repeated_count);
+ compress_threads_save_cleanup(threads);
+ return 0;
+}
--
2.14.5
