double longrunning_rotation() {
// We're going to be doing a bunch of rotations; we probably shouldn't
// let the user see all the verbose output.
test_verbose = false;
// There's probably some great reason why this exact size was chosen for
// the test bit array; however, if there is, it's been lost to
// history.
// const size_t bit_sz = 10000 * 1024 * 8 + 471;
const size_t bit_sz = 12 * 1024 * 8 + 471;
testutil_newrand(bit_sz, 0);
const clockmark_t start_time = ktiming_getmark();
testutil_rotate(0, bit_sz, -bit_sz / 4);
testutil_rotate(0, bit_sz, bit_sz / 4);
testutil_rotate(0, bit_sz, bit_sz / 2);
const clockmark_t end_time = ktiming_getmark();
// Arguably, we should set test_verbose back to whatever it was before
// we started. However, since we're never going to be running more than
// one performance test at a time (or performance tests at the same time
// as functional tests), we can just let it be.
return ktiming_diff_usec(&start_time, &end_time) / 1000000000.0;
}
/* A sample long-running set of flip count operations. */
double longrunning_flipcount(void) {
test_verbose = false;
size_t bit_sz = 128 * 1024 * 1024 * 8 + 531;
testutil_newrand(bit_sz, 0);
clockmark_t time1 = ktiming_getmark();
for (int i = 0; i < 20; i++)
bitarray_count_flips(test_ba, 0, bit_sz);
clockmark_t time2 = ktiming_getmark();
return ktiming_diff_usec(&time1, &time2) / 1000000000.0;
}
/* A sample long-running set of rotation operations. */
double longrunning_rotation(void) {
test_verbose = false;
size_t bit_sz = 12 * 1024 * 8 + 471;
testutil_newrand(bit_sz, 0);
clockmark_t time1 = ktiming_getmark();
testutil_rotate(0, bit_sz, (ssize_t) -bit_sz / 4);
testutil_rotate(0, bit_sz, bit_sz / 4);
testutil_rotate(0, bit_sz, bit_sz / 2);
clockmark_t time2 = ktiming_getmark();
return ktiming_diff_usec(&time1, &time2) / 1000000000.0;
}
