We switch for sending the page number to send real pages.
Signed-off-by: Juan Quintela <quint...@redhat.com>
--
Remove the HACK bit, now we have the function that calculates the size
of a page exported.
Rename multifd_pages{_now}, to sent pages
Remove multifd pages field, it is the same than normal pages
---
migration/migration.c | 7 ++++++-
migration/ram.c | 39 +++++++++++----------------------------
2 files changed, 17 insertions(+), 29 deletions(-)
diff --git a/migration/migration.c b/migration/migration.c
index 54ef095d82..1bd87a4e44 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -2085,6 +2085,7 @@ static void *migration_thread(void *opaque)
*/
int64_t threshold_size = 0;
int64_t qemu_file_bytes = 0;
+ int64_t sent_pages = 0;
int64_t start_time = initial_time;
int64_t end_time;
bool old_vm_running = false;
@@ -2173,8 +2174,11 @@ static void *migration_thread(void *opaque)
current_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
if (current_time >= initial_time + BUFFER_DELAY) {
uint64_t qemu_file_bytes_now = qemu_ftell(s->to_dst_file);
+ uint64_t sent_pages_now = ram_counters.normal;
uint64_t transferred_bytes =
- qemu_file_bytes_now - qemu_file_bytes;
+ (qemu_file_bytes_now - qemu_file_bytes) +
+ (sent_pages_now - sent_pages) *
+ qemu_target_page_size();
uint64_t time_spent = current_time - initial_time;
double bandwidth = (double)transferred_bytes / time_spent;
threshold_size = bandwidth * s->parameters.downtime_limit;
@@ -2194,6 +2198,7 @@ static void *migration_thread(void *opaque)
qemu_file_reset_rate_limit(s->to_dst_file);
initial_time = current_time;
qemu_file_bytes = qemu_file_bytes_now;
+ sent_pages = sent_pages_now;
}
if (qemu_file_rate_limit(s->to_dst_file)) {
/* usleep expects microseconds */
diff --git a/migration/ram.c b/migration/ram.c
index 4c16d0775b..981f345294 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -494,21 +494,15 @@ static void *multifd_send_thread(void *opaque)
if (p->pages.num) {
Error *local_err = NULL;
size_t ret;
- int i;
int num;
num = p->pages.num;
p->pages.num = 0;
qemu_mutex_unlock(&p->mutex);
-
- for (i = 0; i < num; i++) {
- ret = qio_channel_write_all(p->c,
- (const char *)&p->pages.iov[i].iov_base,
- sizeof(uint8_t *), &local_err);
- if (ret != 0) {
- terminate_multifd_send_threads(local_err);
- return NULL;
- }
+ ret = qio_channel_writev_all(p->c, p->pages.iov, num, &local_err);
+ if (ret != 0) {
+ terminate_multifd_send_threads(local_err);
+ return NULL;
}
qemu_mutex_lock(&multifd_send_state->mutex);
p->done = true;
@@ -691,7 +685,6 @@ int multifd_load_cleanup(Error **errp)
static void *multifd_recv_thread(void *opaque)
{
MultiFDRecvParams *p = opaque;
- uint8_t *recv_address;
qemu_sem_post(&p->ready);
while (true) {
@@ -703,27 +696,16 @@ static void *multifd_recv_thread(void *opaque)
if (p->pages.num) {
Error *local_err = NULL;
size_t ret;
- int i;
int num;
num = p->pages.num;
p->pages.num = 0;
- for (i = 0; i < num; i++) {
- ret = qio_channel_read_all(p->c, (char *)&recv_address,
- sizeof(uint8_t *), &local_err);
- if (ret != 0) {
- terminate_multifd_recv_threads(local_err);
- return NULL;
- }
- if (recv_address != p->pages.iov[i].iov_base) {
- error_setg(&local_err, "received %p and expecting %p (%d)",
- recv_address, p->pages.iov[i].iov_base, i);
- terminate_multifd_recv_threads(local_err);
- return NULL;
- }
+ ret = qio_channel_readv_all(p->c, p->pages.iov, num, &local_err);
+ if (ret != 0) {
+ terminate_multifd_recv_threads(local_err);
+ return NULL;
}
-
p->done = true;
qemu_mutex_unlock(&p->mutex);
qemu_sem_post(&p->ready);
@@ -1288,8 +1270,10 @@ static int ram_multifd_page(RAMState *rs,
PageSearchStatus *pss,
offset | RAM_SAVE_FLAG_MULTIFD_PAGE);
fd_num = multifd_send_page(p, rs->migration_dirty_pages == 1);
qemu_put_be16(rs->f, fd_num);
+ if (fd_num != MULTIFD_CONTINUE) {
+ qemu_fflush(rs->f);
+ }
ram_counters.transferred += 2; /* size of fd_num */
- qemu_put_buffer(rs->f, p, TARGET_PAGE_SIZE);
ram_counters.transferred += TARGET_PAGE_SIZE;
pages = 1;
ram_counters.normal++;
@@ -3155,7 +3139,6 @@ static int ram_load(QEMUFile *f, void *opaque, int
version_id)
case RAM_SAVE_FLAG_MULTIFD_PAGE:
fd_num = qemu_get_be16(f);
multifd_recv_page(host, fd_num);
- qemu_get_buffer(f, host, TARGET_PAGE_SIZE);
break;
case RAM_SAVE_FLAG_EOS:
--
2.13.5
