unsigned int thinktime_blocks;
unsigned int fsync_blocks;
unsigned int start_delay;
unsigned int thinktime_blocks;
unsigned int fsync_blocks;
unsigned int start_delay;
extern int is_blktrace(const char *);
extern int load_blktrace(struct thread_data *, const char *);
extern int is_blktrace(const char *);
extern int load_blktrace(struct thread_data *, const char *);