cachelab started

cachelab/cbsl/benchmarks/serialize.c

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+/*
+ * Copyright 2019 Yuta Hirokawa (University of Tsukuba, Japan)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <string.h>
+#ifdef HAVE_GETTIMEOFDAY
+#include <sys/time.h>
+#endif
+#include <math.h>
+#include <cbsl.h>
+
+#include "config.h"
+
+#define CBSL_ERROR_CHECK(X)  {if ((X) == cbsl_error) { fprintf(stderr, "error: %s\n", (#X)); exit(1); }}
+
+typedef unsigned char byte_t;
+
+extern void serialize_bench(double ds);
+extern void rand_byte_t(uint64_t n, byte_t* a);
+extern void zero_filled(uint64_t n, byte_t* a);
+extern double seconds();
+
+int rand_generate = 0;
+
+int main(int argc, char** argv)
+{
+  if (argc < 4)
+    exit(1);
+
+  int max_data_size_exp2, min_data_size_exp2;
+  sscanf(argv[1], "%d", &min_data_size_exp2);
+  sscanf(argv[2], "%d", &max_data_size_exp2);
+  printf("min data size = %.2lf [B]\n", pow(2,min_data_size_exp2));
+  printf("max data size = %.2lf [B]\n", pow(2,max_data_size_exp2));
+
+  rand_generate = (strcmp(argv[3],"-r") == 0);
+
+  if (rand_generate)
+  {
+    printf("data is random generated (stressful compression)\n");
+  }
+  else
+  {
+    printf("data is zero filled (maximum compression)\n");
+  }
+
+  srand((unsigned int)(time(NULL)));
+
+  printf("<write data [Byte]> <time [seconds]> <speed [MiB/sec]>\n");
+
+  for (int i = min_data_size_exp2; i <= max_data_size_exp2; ++i)
+  {
+    serialize_bench(pow(2,i));
+  }
+
+  return 0;
+}
+
+void serialize_bench(double ds)
+{
+  const uint64_t data_size = (uint64_t)(ds);
+
+  char cname[128];
+  sprintf(cname, "serialize_%lu.zst", data_size);
+
+  byte_t* a = (byte_t*)(malloc(data_size));
+  if (rand_generate)
+  {
+    rand_byte_t(data_size / sizeof(byte_t), a);
+  }
+  else
+  {
+    zero_filled(data_size / sizeof(byte_t), a);
+  }
+
+  cbsl_ctx* ctx = cbsl_open(cbsl_store_mode, cname);
+  if (ctx == NULL)
+  {
+    fprintf(stderr, "error: cbsl_open\n");
+    exit(1);
+  }
+
+  const double beg = seconds();
+  {
+    CBSL_ERROR_CHECK(cbsl_write(ctx, a, data_size));
+    CBSL_ERROR_CHECK(cbsl_flush(ctx));
+  }
+  const double end = seconds();
+  const double wt  = end - beg;
+
+  CBSL_ERROR_CHECK(cbsl_close(ctx));
+
+  printf("%lu    %lf    %lf\n", data_size, wt, (data_size/wt)/1.0e6);
+
+  free(a);
+}
+
+void rand_byte_t(uint64_t data_size, byte_t* a)
+{
+  for(uint64_t i = 0; i < data_size; ++i)
+    a[i] = rand() % 255;
+}
+
+void zero_filled(uint64_t n, byte_t* a)
+{
+  for(uint64_t i = 0; i < n; ++i)
+    a[i] = 0; /* all data fills zero */
+}
+
+double seconds() {
+#if defined(HAVE_CLOCK_GETTIME)
+  struct timespec ts;
+  clock_gettime(CLOCK_REALTIME, &ts);
+  return ts.tv_sec + (ts.tv_nsec / 1.0e9);
+#elif defined(HAVE_GETTIMEOFDAY)
+  struct timeval tv;
+  gettimeofday(&tv, NULL);
+  return tv.tv_sec + (ts.tv_usec / 1.0e6);
+#else
+  return (double)(clock() / CLOCKS_PER_SEC);
+#endif
+}