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Blame SOURCES/kvm-rdma-export-throughput-w-MigrationStats-QMP.patch

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From a181c782ef252d49815ce3628716f91e51c765c2 Mon Sep 17 00:00:00 2001
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Message-Id: <a181c782ef252d49815ce3628716f91e51c765c2.1387382496.git.minovotn@redhat.com>
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In-Reply-To: <c5386144fbf09f628148101bc674e2421cdd16e3.1387382496.git.minovotn@redhat.com>
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References: <c5386144fbf09f628148101bc674e2421cdd16e3.1387382496.git.minovotn@redhat.com>
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From: Nigel Croxon <ncroxon@redhat.com>
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Date: Thu, 14 Nov 2013 22:52:43 +0100
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Subject: [PATCH 07/46] rdma: export throughput w/ MigrationStats QMP
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RH-Author: Nigel Croxon <ncroxon@redhat.com>
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Message-id: <1384469598-13137-8-git-send-email-ncroxon@redhat.com>
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Patchwork-id: 55698
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O-Subject: [RHEL7.0 PATCH 07/42] rdma: export throughput w/ MigrationStats QMP
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Bugzilla: 1011720
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RH-Acked-by: Orit Wasserman <owasserm@redhat.com>
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RH-Acked-by: Amit Shah <amit.shah@redhat.com>
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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Bugzilla: 1011720
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https://bugzilla.redhat.com/show_bug.cgi?id=1011720
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>From commit ID:
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commit 7e114f8cf24a01893226e3a4d22a288125515cfd
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Author: Michael R. Hines <mrhines@us.ibm.com>
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Date:   Tue Jun 25 21:35:30 2013 -0400
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    rdma: export throughput w/ MigrationStats QMP
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    This exposes throughput (in megabits/sec) through QMP.
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    Reviewed-by: Juan Quintela <quintela@redhat.com>
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    Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
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    Reviewed-by: Chegu Vinod <chegu_vinod@hp.com>
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    Tested-by: Chegu Vinod <chegu_vinod@hp.com>
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    Tested-by: Michael R. Hines <mrhines@us.ibm.com>
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    Signed-off-by: Michael R. Hines <mrhines@us.ibm.com>
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    Signed-off-by: Juan Quintela <quintela@redhat.com>
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---
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 hmp.c                         |    2 ++
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 include/migration/migration.h |    1 +
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 migration.c                   |    6 ++++++
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 qapi-schema.json              |    5 ++++-
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 4 files changed, 13 insertions(+), 1 deletions(-)
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Signed-off-by: Michal Novotny <minovotn@redhat.com>
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---
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 hmp.c                         | 2 ++
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 include/migration/migration.h | 1 +
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 migration.c                   | 6 ++++++
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 qapi-schema.json              | 5 ++++-
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 4 files changed, 13 insertions(+), 1 deletion(-)
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diff --git a/hmp.c b/hmp.c
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index 29990d2..316e6a1 100644
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--- a/hmp.c
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+++ b/hmp.c
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@@ -167,6 +167,8 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict)
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     if (info->has_ram) {
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         monitor_printf(mon, "transferred ram: %" PRIu64 " kbytes\n",
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                        info->ram->transferred >> 10);
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+        monitor_printf(mon, "throughput: %0.2f mbps\n",
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+                       info->ram->mbps);
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         monitor_printf(mon, "remaining ram: %" PRIu64 " kbytes\n",
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                        info->ram->remaining >> 10);
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         monitor_printf(mon, "total ram: %" PRIu64 " kbytes\n",
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diff --git a/include/migration/migration.h b/include/migration/migration.h
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index 2f3a3d9..201be18 100644
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--- a/include/migration/migration.h
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+++ b/include/migration/migration.h
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@@ -40,6 +40,7 @@ struct MigrationState
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     int state;
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     MigrationParams params;
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+    double mbps;
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     int64_t total_time;
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     int64_t downtime;
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     int64_t expected_downtime;
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diff --git a/migration.c b/migration.c
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index 3520776..f4d1e34 100644
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--- a/migration.c
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+++ b/migration.c
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@@ -66,6 +66,7 @@ MigrationState *migrate_get_current(void)
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         .state = MIG_STATE_SETUP,
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         .bandwidth_limit = MAX_THROTTLE,
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         .xbzrle_cache_size = DEFAULT_MIGRATE_CACHE_SIZE,
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+        .mbps = -1,
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     };
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     return &current_migration;
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@@ -201,6 +202,7 @@ MigrationInfo *qmp_query_migrate(Error **errp)
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         info->ram->normal = norm_mig_pages_transferred();
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         info->ram->normal_bytes = norm_mig_bytes_transferred();
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         info->ram->dirty_pages_rate = s->dirty_pages_rate;
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+        info->ram->mbps = s->mbps;
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         if (blk_mig_active()) {
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             info->has_disk = true;
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@@ -231,6 +233,7 @@ MigrationInfo *qmp_query_migrate(Error **errp)
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         info->ram->skipped = skipped_mig_pages_transferred();
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         info->ram->normal = norm_mig_pages_transferred();
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         info->ram->normal_bytes = norm_mig_bytes_transferred();
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+        info->ram->mbps = s->mbps;
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         break;
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     case MIG_STATE_ERROR:
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         info->has_status = true;
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@@ -580,6 +583,9 @@ static void *migration_thread(void *opaque)
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             double bandwidth = transferred_bytes / time_spent;
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             max_size = bandwidth * migrate_max_downtime() / 1000000;
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+            s->mbps = time_spent ? (((double) transferred_bytes * 8.0) /
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+                    ((double) time_spent / 1000.0)) / 1000.0 / 1000.0 : -1;
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+
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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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diff --git a/qapi-schema.json b/qapi-schema.json
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index 92fcd54..17df327 100644
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--- a/qapi-schema.json
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+++ b/qapi-schema.json
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@@ -569,12 +569,15 @@
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 # @dirty-pages-rate: number of pages dirtied by second by the
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 #        guest (since 1.3)
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 #
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+# @mbps: throughput in megabits/sec. (since 1.6)
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+#
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 # Since: 0.14.0
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 ##
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 { 'type': 'MigrationStats',
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   'data': {'transferred': 'int', 'remaining': 'int', 'total': 'int' ,
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            'duplicate': 'int', 'skipped': 'int', 'normal': 'int',
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-           'normal-bytes': 'int', 'dirty-pages-rate' : 'int' } }
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+           'normal-bytes': 'int', 'dirty-pages-rate' : 'int',
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+           'mbps' : 'number' } }
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 ##
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 # @XBZRLECacheStats
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-- 
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1.7.11.7
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