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examples: add zipf example app

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This app shows how to use the SPDK zipf functionality,
and uses spdk_histogram to show the cumulative
distributions.

Usage:

build/examples/zipf 1.2 100000000 10000

This will generate 10000 random numbers from a range
[0, 100000000) using zipf theta parameter = 1.2.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I36486399b54f57e771cbc5530ae4905afca60b64
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7780
Community-CI: Broadcom CI
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Jim Harris 2021-05-06 21:43:05 +00:00 committed by Tomasz Zawadzki
parent 0346e733e1
commit e6b7e58574
4 changed files with 186 additions and 1 deletions
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2
examples/Makefile
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@ -34,7 +34,7 @@
SPDK_ROOT_DIR := $(abspath $(CURDIR)/..)
include $(SPDK_ROOT_DIR)/mk/spdk.common.mk
DIRS-y += accel bdev blob ioat nvme sock vmd nvmf
DIRS-y += accel bdev blob ioat nvme sock vmd nvmf util
ifeq ($(OS),Linux)
DIRS-$(CONFIG_VHOST) += interrupt_tgt

47
examples/util/Makefile Normal file
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@ -0,0 +1,47 @@
#
# BSD LICENSE
#
# Copyright (c) Intel Corporation.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Intel Corporation nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
SPDK_ROOT_DIR := $(abspath $(CURDIR)/../..)
include $(SPDK_ROOT_DIR)/mk/spdk.common.mk
DIRS-y += zipf
.PHONY: all clean $(DIRS-y)
all: $(DIRS-y)
@:
clean: $(DIRS-y)
@:
include $(SPDK_ROOT_DIR)/mk/spdk.subdirs.mk

42
examples/util/zipf/Makefile Normal file
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@ -0,0 +1,42 @@
#
# Copyright (c) Intel Corporation.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Intel Corporation nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
SPDK_ROOT_DIR := $(abspath $(CURDIR)/../../..)
include $(SPDK_ROOT_DIR)/mk/spdk.common.mk
include $(SPDK_ROOT_DIR)/mk/spdk.modules.mk
APP = zipf
C_SRCS := zipf.c
SPDK_LIB_LIST = util
include $(SPDK_ROOT_DIR)/mk/spdk.app.mk

96
examples/util/zipf/zipf.c Normal file
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@ -0,0 +1,96 @@
/*-
* BSD LICENSE
*
* Copyright (c) Intel Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "spdk/stdinc.h"
#include "spdk/zipf.h"
#include "spdk/histogram_data.h"
#include "spdk/string.h"
static void
usage(const char *prog)
{
printf("usage: %s <theta> <range> <count>\n", prog);
}
static void
print_bucket(void *ctx, uint64_t start, uint64_t end, uint64_t count,
uint64_t total, uint64_t so_far)
{
double so_far_pct;
char range[64];
if (count == 0) {
return;
}
so_far_pct = (double)so_far * 100 / total;
snprintf(range, sizeof(range), "[%ju, %ju)", start, end);
printf("%24s: %9.4f%% (%9ju)\n", range, so_far_pct, count);
}
int
main(int argc, char **argv)
{
struct spdk_zipf *zipf;
struct spdk_histogram_data *h;
float theta;
int range, count, i;
if (argc < 4) {
usage(argv[0]);
return 1;
}
theta = atof(argv[1]);
range = spdk_strtol(argv[2], 10);
count = spdk_strtol(argv[3], 10);
if (range <= 0 || count <= 0) {
printf("range and count must be positive integers\n");
usage(argv[0]);
return 1;
}
zipf = spdk_zipf_create(range, theta, time(NULL));
h = spdk_histogram_data_alloc();
for (i = 0; i < count; i++) {
spdk_histogram_data_tally(h, spdk_zipf_generate(zipf));
}
spdk_histogram_data_iterate(h, print_bucket, NULL);
spdk_histogram_data_free(h);
spdk_zipf_free(&zipf);
return 0;
}