d239c23ed1
Add dirtyrate statistics functions to record/update dirtyrate info. Signed-off-by: Chuan Zheng <zhengchuan@huawei.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Li Qiang <liq3ea@gmail.com> Message-Id: <1600237327-33618-5-git-send-email-zhengchuan@huawei.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
94 lines
3.1 KiB
Diff
94 lines
3.1 KiB
Diff
From d1340703e127c02e9a586143039507ba10d73cfb Mon Sep 17 00:00:00 2001
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From: Chuan Zheng <zhengchuan@huawei.com>
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Date: Wed, 16 Sep 2020 14:21:59 +0800
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Subject: [PATCH] migration/dirtyrate: Add dirtyrate statistics series
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functions
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Add dirtyrate statistics functions to record/update dirtyrate info.
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Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
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Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Reviewed-by: Li Qiang <liq3ea@gmail.com>
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Message-Id: <1600237327-33618-5-git-send-email-zhengchuan@huawei.com>
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Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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---
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migration/dirtyrate.c | 32 ++++++++++++++++++++++++++++++++
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migration/dirtyrate.h | 12 ++++++++++++
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2 files changed, 44 insertions(+)
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diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c
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index 44a60bf10d..cbb323d6ec 100644
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--- a/migration/dirtyrate.c
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+++ b/migration/dirtyrate.c
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@@ -23,6 +23,7 @@
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#include "dirtyrate.h"
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static int CalculatingState = DIRTY_RATE_STATUS_UNSTARTED;
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+static struct DirtyRateStat DirtyStat;
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static int dirtyrate_set_state(int *state, int old_state, int new_state)
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{
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@@ -34,6 +35,37 @@ static int dirtyrate_set_state(int *state, int old_state, int new_state)
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}
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}
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+static void reset_dirtyrate_stat(void)
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+{
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+ DirtyStat.total_dirty_samples = 0;
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+ DirtyStat.total_sample_count = 0;
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+ DirtyStat.total_block_mem_MB = 0;
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+ DirtyStat.dirty_rate = -1;
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+ DirtyStat.start_time = 0;
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+ DirtyStat.calc_time = 0;
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+}
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+
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+static void update_dirtyrate_stat(struct RamblockDirtyInfo *info)
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+{
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+ DirtyStat.total_dirty_samples += info->sample_dirty_count;
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+ DirtyStat.total_sample_count += info->sample_pages_count;
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+ /* size of total pages in MB */
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+ DirtyStat.total_block_mem_MB += (info->ramblock_pages *
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+ TARGET_PAGE_SIZE) >> 20;
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+}
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+
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+static void update_dirtyrate(uint64_t msec)
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+{
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+ uint64_t dirtyrate;
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+ uint64_t total_dirty_samples = DirtyStat.total_dirty_samples;
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+ uint64_t total_sample_count = DirtyStat.total_sample_count;
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+ uint64_t total_block_mem_MB = DirtyStat.total_block_mem_MB;
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+
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+ dirtyrate = total_dirty_samples * total_block_mem_MB *
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+ 1000 / (total_sample_count * msec);
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+
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+ DirtyStat.dirty_rate = dirtyrate;
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+}
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static void calculate_dirtyrate(struct DirtyRateConfig config)
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{
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diff --git a/migration/dirtyrate.h b/migration/dirtyrate.h
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index 8707df852d..312debca6f 100644
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--- a/migration/dirtyrate.h
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+++ b/migration/dirtyrate.h
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@@ -42,5 +42,17 @@ struct RamblockDirtyInfo {
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uint32_t *hash_result; /* array of hash result for sampled pages */
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};
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+/*
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+ * Store calculation statistics for each measure.
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+ */
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+struct DirtyRateStat {
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+ uint64_t total_dirty_samples; /* total dirty sampled page */
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+ uint64_t total_sample_count; /* total sampled pages */
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+ uint64_t total_block_mem_MB; /* size of total sampled pages in MB */
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+ int64_t dirty_rate; /* dirty rate in MB/s */
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+ int64_t start_time; /* calculation start time in units of second */
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+ int64_t calc_time; /* time duration of two sampling in units of second */
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+};
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+
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void *get_dirtyrate_thread(void *arg);
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#endif
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--
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2.27.0
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