openstack/deb-libisal
Code Issues Proposed changes

igzip: Allow performance check with small input buffers

Browse Source 
Add the SMALL_IN_BUFFER compile time condition to igzip_file_perf to perform
perfomance checking when data is separated into small input buffers.

Change-Id: Ic7a6451f23a46773e100b17ce86f84e41e4df48a
Signed-off-by: Roy Oursler <roy.j.oursler@intel.com>
This commit is contained in:
Roy Oursler 2016-09-07 10:17:52 -07:00 committed by Greg Tucker
parent bda088b31a
commit 547e8e1893
1 changed files with 29 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
igzip/igzip_file_perf.c
View File

@ -36,6 +36,7 @@
#define BUF_SIZE 1024
#define MIN_TEST_LOOPS 8
#define SMALL_INBUF_SIZE (4 * 1024)
#ifndef RUN_MEM_SIZE
# define RUN_MEM_SIZE 500000000
#endif
@ -122,6 +123,33 @@ int main(int argc, char *argv[])
struct perf start, stop;
perf_start(&start);
#ifdef SMALL_IN_BUFFER
int avail_in;
for (i = 0; i < iterations; i++) {
isal_deflate_init(&stream);
stream.end_of_stream = 0;
stream.flush = NO_FLUSH;
stream.next_out = outbuf;
stream.avail_out = outbuf_size;
stream.next_in = inbuf;
avail_in = infile_size;
while (avail_in > 0) {
stream.avail_in =
avail_in >= SMALL_INBUF_SIZE ? SMALL_INBUF_SIZE : avail_in;
avail_in -= SMALL_INBUF_SIZE;
if (avail_in <= 0)
stream.end_of_stream = 1;
isal_deflate(&stream);
if (stream.avail_in != 0)
break;
}
}
#else
for (i = 0; i < iterations; i++) {
isal_deflate_init(&stream);
stream.end_of_stream = 1; /* Do the entire file at once */
@ -134,6 +162,7 @@ int main(int argc, char *argv[])
if (stream.avail_in != 0)
break;
}
#endif
perf_stop(&stop);
if (stream.avail_in != 0) {