#define DEFAULT_GUEST_TEST_MEM_SIZE (1 << 30) /* 1G */
+#ifdef PRINT_PER_PAGE_UPDATES
+#define PER_PAGE_DEBUG(...) DEBUG(__VA_ARGS__)
+#else
+#define PER_PAGE_DEBUG(...)
+#endif
+
#ifdef PRINT_PER_VCPU_UPDATES
#define PER_VCPU_DEBUG(...) DEBUG(__VA_ARGS__)
#else
struct kvm_vm *vm = args->vm;
int vcpu_id = args->vcpu_id;
struct kvm_run *run;
+ struct timespec start;
+ struct timespec end;
vcpu_args_set(vm, vcpu_id, 1, vcpu_id);
run = vcpu_state(vm, vcpu_id);
+ clock_gettime(CLOCK_MONOTONIC, &start);
+
/* Let the guest access its memory */
ret = _vcpu_run(vm, vcpu_id);
TEST_ASSERT(ret == 0, "vcpu_run failed: %d\n", ret);
exit_reason_str(run->exit_reason));
}
+ clock_gettime(CLOCK_MONOTONIC, &end);
+ PER_VCPU_DEBUG("vCPU %d execution time: %lld.%.9lds\n", vcpu_id,
+ (long long)(timespec_diff(start, end).tv_sec),
+ timespec_diff(start, end).tv_nsec);
+
return NULL;
}
static int handle_uffd_page_request(int uffd, uint64_t addr)
{
pid_t tid;
+ struct timespec start;
+ struct timespec end;
struct uffdio_copy copy;
int r;
copy.len = host_page_size;
copy.mode = 0;
+ clock_gettime(CLOCK_MONOTONIC, &start);
+
r = ioctl(uffd, UFFDIO_COPY, ©);
if (r == -1) {
DEBUG("Failed Paged in 0x%lx from thread %d with errno: %d\n",
return r;
}
+ clock_gettime(CLOCK_MONOTONIC, &end);
+
+ PER_PAGE_DEBUG("UFFDIO_COPY %d \t%lld ns\n", tid,
+ (long long)timespec_to_ns(timespec_diff(start, end)));
+ PER_PAGE_DEBUG("Paged in %ld bytes at 0x%lx from thread %d\n",
+ host_page_size, addr, tid);
+
return 0;
}
int pipefd = uffd_args->pipefd;
useconds_t delay = uffd_args->delay;
int64_t pages = 0;
+ struct timespec start;
+ struct timespec end;
+ clock_gettime(CLOCK_MONOTONIC, &start);
while (!quit_uffd_thread) {
struct uffd_msg msg;
struct pollfd pollfd[2];
pages++;
}
+ clock_gettime(CLOCK_MONOTONIC, &end);
+ PER_VCPU_DEBUG("userfaulted %ld pages over %lld.%.9lds. (%f/sec)\n",
+ pages, (long long)(timespec_diff(start, end).tv_sec),
+ timespec_diff(start, end).tv_nsec, pages /
+ ((double)timespec_diff(start, end).tv_sec +
+ (double)timespec_diff(start, end).tv_nsec / 100000000.0));
+
return NULL;
}
uint64_t guest_num_pages;
int vcpu_id;
int r;
+ struct timespec start;
+ struct timespec end;
vm = create_vm(mode, vcpus, vcpu_memory_bytes);
DEBUG("guest physical test memory offset: 0x%lx\n",
guest_test_phys_mem);
-
/* Add an extra memory slot for testing demand paging */
vm_userspace_mem_region_add(vm, VM_MEM_SRC_ANONYMOUS,
guest_test_phys_mem,
DEBUG("Finished creating vCPUs and starting uffd threads\n");
+ clock_gettime(CLOCK_MONOTONIC, &start);
+
for (vcpu_id = 0; vcpu_id < vcpus; vcpu_id++) {
pthread_create(&vcpu_threads[vcpu_id], NULL, vcpu_worker,
&vcpu_args[vcpu_id]);
DEBUG("All vCPU threads joined\n");
+ clock_gettime(CLOCK_MONOTONIC, &end);
+
if (use_uffd) {
char c;
}
}
+ DEBUG("Total guest execution time: %lld.%.9lds\n",
+ (long long)(timespec_diff(start, end).tv_sec),
+ timespec_diff(start, end).tv_nsec);
+ DEBUG("Overall demand paging rate: %f pgs/sec\n",
+ guest_num_pages / ((double)timespec_diff(start, end).tv_sec +
+ (double)timespec_diff(start, end).tv_nsec / 100000000.0));
+
ucall_uninit(vm);
kvm_vm_free(vm);