fprintf(stderr, "DEBUG: bufsize %d\n", bufsize);
fprintf(stderr, "DEBUG: ntrec %ld\n", ntrec);
fprintf(stderr, "DEBUG: %ld reads\n", cntloop);
fprintf(stderr, "DEBUG: bufsize %d\n", bufsize);
fprintf(stderr, "DEBUG: ntrec %ld\n", ntrec);
fprintf(stderr, "DEBUG: %ld reads\n", cntloop);