#include "../fio.h"
#include "../os.h"
+static int fio_cpuio_queue(struct thread_data *td, struct io_u fio_unused *io_u)
+{
+ __usec_sleep(td->cpucycle);
+ return FIO_Q_COMPLETED;
+}
+
static int fio_cpuio_setup(struct thread_data fio_unused *td)
{
+ struct fio_file *f;
+ unsigned int i;
+
+ td->total_file_size = -1;
+ td->io_size = td->total_file_size;
+ td->total_io_size = td->io_size;
+
+ for_each_file(td, f, i) {
+ f->real_file_size = -1;
+ f->file_size = -1;
+ }
+
return 0;
}
static int fio_cpuio_init(struct thread_data *td)
{
if (!td->cpuload) {
- td_vmsg(td, EINVAL, "cpu thread needs rate");
+ td_vmsg(td, EINVAL, "cpu thread needs rate (cpuload=)","cpuio");
return 1;
- } else if (td->cpuload > 100)
+ }
+
+ if (td->cpuload > 100)
td->cpuload = 100;
- td->nr_files = 0;
+ /*
+ * set thinktime_sleep and thinktime_spin appropriately
+ */
+ td->thinktime_blocks = 1;
+ td->thinktime_spin = 0;
+ td->thinktime = (td->cpucycle * (100 - td->cpuload)) / td->cpuload;
+ td->nr_files = td->open_files = 1;
+ return 0;
+}
+
+static int fio_cpuio_open(struct thread_data fio_unused *td, struct fio_file *f)
+{
+ f->fd = 0;
return 0;
}
static struct ioengine_ops ioengine = {
.name = "cpuio",
.version = FIO_IOOPS_VERSION,
+ .queue = fio_cpuio_queue,
.init = fio_cpuio_init,
.setup = fio_cpuio_setup,
- .flags = FIO_CPUIO | FIO_NULLIO,
+ .open_file = fio_cpuio_open,
+ .flags = FIO_SYNCIO | FIO_DISKLESSIO,
};
static void fio_init fio_cpuio_register(void)