From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:42493) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ds5PZ-0006fj-0G for qemu-devel@nongnu.org; Wed, 13 Sep 2017 07:00:56 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ds5PX-00079o-Te for qemu-devel@nongnu.org; Wed, 13 Sep 2017 07:00:53 -0400 Received: from mx1.redhat.com ([209.132.183.28]:43798) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ds5PX-00078V-Ke for qemu-devel@nongnu.org; Wed, 13 Sep 2017 07:00:51 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 94DAD13A56 for ; Wed, 13 Sep 2017 11:00:50 +0000 (UTC) From: Juan Quintela Date: Wed, 13 Sep 2017 12:59:52 +0200 Message-Id: <20170913105953.13760-20-quintela@redhat.com> In-Reply-To: <20170913105953.13760-1-quintela@redhat.com> References: <20170913105953.13760-1-quintela@redhat.com> Subject: [Qemu-devel] [PATCH v8 19/20] migration: Transfer pages over new channels List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: dgilbert@redhat.com, lvivier@redhat.com, peterx@redhat.com We switch for sending the page number to send real pages. Signed-off-by: Juan Quintela -- Remove the HACK bit, now we have the function that calculates the size of a page exported. --- 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 67f3375ddc..b26b987fe9 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -2072,6 +2072,7 @@ static void *migration_thread(void *opaque) */ int64_t threshold_size = 0; int64_t qemu_file_bytes = 0; + int64_t multifd_pages = 0; int64_t start_time = initial_time; int64_t end_time; bool old_vm_running = false; @@ -2160,8 +2161,11 @@ 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 multifd_pages_now = ram_counters.multifd; uint64_t transferred_bytes = - qemu_file_bytes_now - qemu_file_bytes; + (qemu_file_bytes_now - qemu_file_bytes) + + (multifd_pages_now - multifd_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; @@ -2181,6 +2185,7 @@ 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; + multifd_pages = multifd_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 1b1e346ae0..2d89d4e39f 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -498,21 +498,15 @@ 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; @@ -695,7 +689,6 @@ 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) { @@ -707,27 +700,16 @@ 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); @@ -1289,8 +1271,10 @@ 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++; @@ -3153,7 +3137,6 @@ 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