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authorBill Wendling <wendling@ncsa.uiuc.edu>2002-06-07 22:06:27 (GMT)
committerBill Wendling <wendling@ncsa.uiuc.edu>2002-06-07 22:06:27 (GMT)
commitb77825d9a72db083a5b8bd03801848d87d02a942 (patch)
tree7ed0cd2a219b0da2260c7e62e6b4abf6aa45e9b6 /perform
parentc8721abdbc0b92277611bc97f9ed4d843d93d4f9 (diff)
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[svn-r5555] Purpose:
Feature Update Description: It now writes an uncompressed version of the file out. The first tests didn't look all that wonderful. Here is a typical output: Buffer size == 1MB Uncompressed Write Time: 0.55s Uncompressed Write Throughput: 116.00MB/s Compressed Write Time: 8.76s Compressed Write Throughput: 7.31MB/s Platforms tested: Linux
Diffstat (limited to 'perform')
-rw-r--r--perform/zip_perf.c48
1 files changed, 46 insertions, 2 deletions
diff --git a/perform/zip_perf.c b/perform/zip_perf.c
index 066fce9..2d51b3b 100644
--- a/perform/zip_perf.c
+++ b/perform/zip_perf.c
@@ -199,6 +199,8 @@ write_file(Bytef *source, uLongf sourceLen)
d_len -= rc;
d_ptr += rc;
}
+
+ free(dest);
}
/*
@@ -375,6 +377,9 @@ do_write_test(unsigned long file_size, unsigned long min_buf_size,
Bytef *src;
for (src_len = min_buf_size; src_len <= max_buf_size; src_len <<= 1) {
+ register int i, iters;
+
+ iters = file_size / src_len;
src = (Bytef *)calloc(1, sizeof(Bytef) * src_len);
if (!src) {
@@ -395,14 +400,31 @@ do_write_test(unsigned long file_size, unsigned long min_buf_size,
}
printf("\n");
+
+ /* do uncompressed data write */
gettimeofday(&timer_start, NULL);
output = open(filename, O_RDWR | O_TRUNC);
if (output == -1)
error(strerror(errno));
- for (total_len = 0; total_len < file_size; total_len += src_len) {
- write_file(src, src_len);
+ for (i = 0; i <= iters; ++i) {
+ Bytef *s_ptr = src;
+ uLong s_len = src_len;
+
+ /* loop to make sure we write everything out that we want to write */
+ for (;;) {
+ int rc = write(output, s_ptr, s_len);
+
+ if (rc == -1)
+ error(strerror(errno));
+
+ if (rc == s_len)
+ break;
+
+ s_len -= rc;
+ s_ptr += rc;
+ }
}
close(output);
@@ -413,6 +435,28 @@ do_write_test(unsigned long file_size, unsigned long min_buf_size,
((double)timer_start.tv_sec +
((double)timer_start.tv_usec) / MICROSECOND);
+ printf("\tUncompressed Write Time: %.2fs\n", total_time);
+ printf("\tUncompressed Write Throughput: %.2fMB/s\n",
+ MB_PER_SEC(file_size, total_time));
+
+ /* do compressed data write */
+ output = open(filename, O_RDWR | O_TRUNC);
+
+ if (output == -1)
+ error(strerror(errno));
+
+
+ for (total_len = 0; total_len < file_size; total_len += src_len)
+ write_file(src, src_len);
+
+ close(output);
+ gettimeofday(&timer_stop, NULL);
+
+ total_time = ((double)timer_stop.tv_sec +
+ ((double)timer_stop.tv_usec) / MICROSECOND) -
+ ((double)timer_start.tv_sec +
+ ((double)timer_start.tv_usec) / MICROSECOND);
+
printf("\tCompressed Write Time: %.2fs\n", total_time);
printf("\tCompressed Write Throughput: %.2fMB/s\n",
MB_PER_SEC(file_size, total_time));