adjust sftest.cc to be more usable as a write-bandwidth tester
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85f9615c26
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@ -13,6 +13,8 @@
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#include <string.h>
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#include <getopt.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <float.h>
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#include <glibmm/miscutils.h>
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@ -21,6 +23,13 @@ using namespace std;
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SF_INFO format_info;
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float* data = 0;
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bool with_sync = false;
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bool keep_writing = true;
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void
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signal_handler (int)
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{
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keep_writing = false;
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}
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int
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write_one (SNDFILE* sf, uint32_t nframes)
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@ -39,7 +48,13 @@ write_one (SNDFILE* sf, uint32_t nframes)
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void
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usage ()
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{
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cout << "sftest [ -f HEADER-FORMAT ] [ -F DATA-FORMAT ] [ -r SAMPLERATE ] [ -n NFILES ] [ -b BLOCKSIZE ] [ -s ]" << endl;
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cout << "sftest [ -f HEADER-FORMAT ] [ -F DATA-FORMAT ] [ -r SAMPLERATE ] [ -n NFILES ] [ -b BLOCKSIZE ] [ -s ]";
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#ifdef __APPLE__
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cout << " [ -D ]";
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#endif
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cout << endl;
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cout << "\tHEADER-FORMAT is one of:" << endl
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<< "\t\tWAV" << endl
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<< "\t\tCAF" << endl
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@ -56,14 +71,24 @@ main (int argc, char* argv[])
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{
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vector<SNDFILE*> sndfiles;
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uint32_t sample_size;
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char optstring[] = "f:r:F:n:c:b:sD";
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int channels, samplerate;
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char optstring[] = "f:r:F:n:c:b:sd:qS:"
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#ifdef __APPLE__
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"D"
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#endif
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;
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int channels = 1;
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int samplerate = 48000;
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char const *suffix = ".wav";
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char const *header_format = "wav";
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char const *data_format = "float";
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size_t filesize = 10 * 1048576;
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uint32_t block_size = 64 * 1024;
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uint32_t nfiles = 100;
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string dirname = "/tmp";
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bool quiet = false;
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#ifdef __APPLE__
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bool direct = false;
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#endif
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const struct option longopts[] = {
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{ "header-format", 1, 0, 'f' },
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{ "data-format", 1, 0, 'F' },
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@ -72,7 +97,12 @@ main (int argc, char* argv[])
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{ "blocksize", 1, 0, 'b' },
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{ "channels", 1, 0, 'c' },
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{ "sync", 0, 0, 's' },
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{ "dirname", 1, 0, 'd' },
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{ "quiet", 0, 0, 'q' },
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{ "filesize", 1, 0, 'S' },
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#ifdef __APPLE__
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{ "direct", 0, 0, 'D' },
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#endif
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{ 0, 0, 0, 0 }
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};
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@ -110,9 +140,20 @@ main (int argc, char* argv[])
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case 's':
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with_sync = true;
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break;
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case 'S':
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filesize = atoi (optarg);
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break;
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#ifdef __APPLE__
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case 'D':
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direct = true;
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break;
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#endif
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case 'd':
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dirname = optarg;
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break;
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case 'q':
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quiet = true;
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break;
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default:
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usage ();
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return 0;
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@ -161,8 +202,11 @@ main (int argc, char* argv[])
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return 0;
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}
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char tmpdirname[] = "sftest-XXXXXX";
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g_mkdtemp (tmpdirname);
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string tmpdirname = Glib::build_filename (dirname, "sftest");
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if (g_mkdir_with_parents (tmpdirname.c_str(), 0755)) {
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cerr << "Cannot create output directory\n";
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return 1;
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}
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for (uint32_t n = 0; n < nfiles; ++n) {
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SNDFILE* sf;
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@ -202,13 +246,26 @@ main (int argc, char* argv[])
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sndfiles.push_back (sf);
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}
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cout << nfiles << " files are in " << tmpdirname << " all used " << (direct ? "without" : "with") << " OS buffer cache" << endl;
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cout << "Format is " << suffix << ' ' << channels << " channel" << (channels > 1 ? "s" : "") << " written in chunks of " << block_size << " frames, synced ? " << (with_sync ? "yes" : "no") << endl;
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if (!quiet) {
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cout << nfiles << " files are in " << tmpdirname;
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#ifdef __APPLE__
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cout << " all used " << (direct ? "without" : "with") << " OS buffer cache";
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#endif
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cout << endl;
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cout << "Format is " << suffix << ' ' << channels << " channel" << (channels > 1 ? "s" : "") << " written in chunks of " << block_size << " frames, synced ? " << (with_sync ? "yes" : "no") << endl;
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}
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data = new float[block_size*channels];
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uint64_t written = 0;
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while (true) {
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signal (SIGINT, signal_handler);
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signal (SIGSTOP, signal_handler);
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double max_bandwidth = 0;
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double min_bandwidth = DBL_MAX;
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while (keep_writing && written < filesize) {
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gint64 before;
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before = g_get_monotonic_time();
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for (vector<SNDFILE*>::iterator s = sndfiles.begin(); s != sndfiles.end(); ++s) {
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@ -224,10 +281,26 @@ main (int argc, char* argv[])
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const double data_rate = sndfiles.size() * channels * sample_size * samplerate;
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stringstream ds;
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ds << setprecision (1) << data_minutes;
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max_bandwidth = max (max_bandwidth, bandwidth);
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min_bandwidth = min (min_bandwidth, bandwidth);
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cout << "BW @ " << written << " frames (" << ds.str() << " minutes) = " << (bandwidth/1048576.0) << " MB/sec " << bandwidth / data_rate << " x faster than necessary " << endl;
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if (!quiet) {
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cout << "BW @ " << written << " frames (" << ds.str() << " minutes) = " << (bandwidth/1048576.0) << " MB/sec " << bandwidth / data_rate << " x faster than necessary " << endl;
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}
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}
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cout << "Max bandwidth = " << max_bandwidth / 1048576.0 << " MB/sec" << endl;
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cout << "Min bandwidth = " << min_bandwidth / 1048576.0 << " MB/sec" << endl;
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if (!quiet) {
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cout << "Closing files ...\n";
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for (vector<SNDFILE*>::iterator s = sndfiles.begin(); s != sndfiles.end(); ++s) {
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sf_close (*s);
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}
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cout << "Done.\n";
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}
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return 0;
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}
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