a7b9285033
Alias qemu-system-* man page to qemu.1 (bz #907746) Drop execute bit on service files (bz #963917) Conditionalize KSM service on host virt support (bz #963681) Split out KSM package, make it not pulled in by default
62 lines
2.4 KiB
Diff
62 lines
2.4 KiB
Diff
From 0d9d4a5c179f09bd801ba3470b97e1fd3f184ce2 Mon Sep 17 00:00:00 2001
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From: Juan Quintela <quintela@redhat.com>
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Date: Fri, 1 Feb 2013 13:22:37 +0100
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Subject: [PATCH] migration: calculate expected_downtime
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We removed the calculation in commit e4ed1541ac9413eac494a03532e34beaf8a7d1c5
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Now we add it back. We need to create dirty_bytes_rate because we
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can't include cpu-all.h from migration.c, and there is no other way to
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include TARGET_PAGE_SIZE.
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Signed-off-by: Juan Quintela <quintela@redhat.com>
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Reviewed-by: Orit Wasserman <owasserm@redhat.com>
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(cherry picked from commit 90f8ae724a575861f093fbdbfd49a925bcfec327)
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---
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arch_init.c | 1 +
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include/migration/migration.h | 1 +
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migration.c | 5 +++++
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3 files changed, 7 insertions(+)
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diff --git a/arch_init.c b/arch_init.c
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index 8da868b..8daeafa 100644
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--- a/arch_init.c
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+++ b/arch_init.c
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@@ -414,6 +414,7 @@ static void migration_bitmap_sync(void)
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if (end_time > start_time + 1000) {
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s->dirty_pages_rate = num_dirty_pages_period * 1000
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/ (end_time - start_time);
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+ s->dirty_bytes_rate = s->dirty_pages_rate * TARGET_PAGE_SIZE;
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start_time = end_time;
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num_dirty_pages_period = 0;
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}
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diff --git a/include/migration/migration.h b/include/migration/migration.h
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index a8c9639..d121409 100644
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--- a/include/migration/migration.h
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+++ b/include/migration/migration.h
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@@ -51,6 +51,7 @@ struct MigrationState
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int64_t downtime;
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int64_t expected_downtime;
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int64_t dirty_pages_rate;
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+ int64_t dirty_bytes_rate;
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bool enabled_capabilities[MIGRATION_CAPABILITY_MAX];
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int64_t xbzrle_cache_size;
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bool complete;
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diff --git a/migration.c b/migration.c
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index ebfbbde..59e479d 100644
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--- a/migration.c
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+++ b/migration.c
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@@ -738,6 +738,11 @@ static void *buffered_file_thread(void *opaque)
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DPRINTF("transferred %" PRIu64 " time_spent %" PRIu64
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" bandwidth %g max_size %" PRId64 "\n",
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transferred_bytes, time_spent, bandwidth, max_size);
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+ /* if we haven't sent anything, we don't want to recalculate
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+ 10000 is a small enough number for our purposes */
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+ if (s->dirty_bytes_rate && transferred_bytes > 10000) {
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+ s->expected_downtime = s->dirty_bytes_rate / bandwidth;
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+ }
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s->bytes_xfer = 0;
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sleep_time = 0;
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