diff options
| -rw-r--r-- | perform/zip_perf.c | 48 |
1 files changed, 39 insertions, 9 deletions
diff --git a/perform/zip_perf.c b/perform/zip_perf.c index ae84304..c124997 100644 --- a/perform/zip_perf.c +++ b/perform/zip_perf.c @@ -1,8 +1,16 @@ -/* - * Copyright (C) 2002 - * National Center for Supercomputing Applications - * All rights reserved. - */ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * Copyright by the Board of Trustees of the University of Illinois. * + * All rights reserved. * + * * + * This file is part of HDF5. The full HDF5 copyright notice, including * + * terms governing use, modification, and redistribution, is contained in * + * the files COPYING and Copyright.html. COPYING can be found at the root * + * of the source code distribution tree; Copyright.html can be found at the * + * root level of an installed copy of the electronic HDF5 document set and * + * is linked from the top-level documents page. It can also be found at * + * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have * + * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. * + * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /* @(#) $Id$ */ @@ -65,6 +73,7 @@ #define ONE_KB 1024 #define ONE_MB (ONE_KB * ONE_KB) +#define ONE_GB (ONE_MB * ONE_KB) #define MICROSECOND 1000000.0 @@ -92,6 +101,7 @@ static char *filename; static int compress_level = Z_DEFAULT_COMPRESSION; static int output, random_test = FALSE; static int report_once_flag; +static double compression_time; /* internal functions */ static void error(const char *fmt, ...); @@ -186,6 +196,7 @@ write_file(Bytef *source, uLongf sourceLen) { Bytef *d_ptr, *dest; uLongf d_len, destLen; + struct timeval timer_start, timer_stop; /* destination buffer needs to be at least 0.1% larger than sourceLen * plus 12 bytes */ @@ -195,7 +206,14 @@ write_file(Bytef *source, uLongf sourceLen) if (!dest) error("out of memory"); + gettimeofday(&timer_start, NULL); compress_buffer(dest, &destLen, source, sourceLen); + gettimeofday(&timer_stop, NULL); + + compression_time += ((double)timer_stop.tv_sec + + ((double)timer_stop.tv_usec) / MICROSECOND) - + ((double)timer_start.tv_sec + + ((double)timer_start.tv_usec) / MICROSECOND); if (report_once_flag) { printf("\tCompression Ratio: %g\n", ((double)destLen) / sourceLen); @@ -207,7 +225,7 @@ write_file(Bytef *source, uLongf sourceLen) /* loop to make sure we write everything out that we want to write */ for (;;) { - int rc = write(output, d_ptr, d_len); + int rc = write(output, d_ptr, (size_t)d_len); if (rc == -1) error(strerror(errno)); @@ -337,6 +355,7 @@ usage(void) printf("\n"); printf(" K - Kilobyte (%d)\n", ONE_KB); printf(" M - Megabyte (%d)\n", ONE_MB); + printf(" G - Gigabyte (%d)\n", ONE_GB); printf("\n"); printf(" Example: 37M = 37 Megabytes = %d bytes\n", 37 * ONE_MB); printf("\n"); @@ -378,6 +397,10 @@ parse_size_directive(const char *size) case 'm': s *= ONE_MB; break; + case 'G': + case 'g': + s *= ONE_GB; + break; default: error("illegal size specifier '%c'", *endptr); break; @@ -407,10 +430,12 @@ do_write_test(unsigned long file_size, unsigned long min_buf_size, error("out of memory"); } + compression_time = 0.0; + if (random_test) /* fill the buffer with random data */ for (i = 0; i < src_len; ++i) - src[i] = 0xff | (int) (255.0 * rand()/(RAND_MAX + 1.0)); + src[i] = 0xff | (1 + (int)(255.0 * rand()/(RAND_MAX + 1.0))); printf("Buffer size == "); @@ -428,7 +453,7 @@ do_write_test(unsigned long file_size, unsigned long min_buf_size, /* do uncompressed data write */ gettimeofday(&timer_start, NULL); - output = open(filename, O_RDWR | O_TRUNC); + output = open(filename, O_RDWR | O_CREAT); if (output == -1) error(strerror(errno)); @@ -464,13 +489,16 @@ do_write_test(unsigned long file_size, unsigned long min_buf_size, printf("\tUncompressed Write Throughput: %.2fMB/s\n", MB_PER_SEC(file_size, total_time)); + unlink(filename); + /* do compressed data write */ - output = open(filename, O_RDWR | O_TRUNC); + output = open(filename, O_RDWR | O_CREAT); if (output == -1) error(strerror(errno)); report_once_flag = 1; + gettimeofday(&timer_start, NULL); for (total_len = 0; total_len < file_size; total_len += src_len) write_file(src, src_len); @@ -486,7 +514,9 @@ do_write_test(unsigned long file_size, unsigned long min_buf_size, printf("\tCompressed Write Time: %.2fs\n", total_time); printf("\tCompressed Write Throughput: %.2fMB/s\n", MB_PER_SEC(file_size, total_time)); + printf("\tCompression Time: %gs\n", compression_time); + unlink(filename); free(src); } } |