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[PATCH v6 04/12] migration/dirtyrate: Add dirtyrate statistics series fu
From: |
Chuan Zheng |
Subject: |
[PATCH v6 04/12] migration/dirtyrate: Add dirtyrate statistics series functions |
Date: |
Sat, 29 Aug 2020 10:52:49 +0800 |
Add dirtyrate statistics functions to record/update dirtyrate info.
Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
---
migration/dirtyrate.c | 32 ++++++++++++++++++++++++++++++++
migration/dirtyrate.h | 12 ++++++++++++
2 files changed, 44 insertions(+)
diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c
index 035ccd1..fa7a1db 100644
--- a/migration/dirtyrate.c
+++ b/migration/dirtyrate.c
@@ -23,6 +23,7 @@
#include "dirtyrate.h"
static int CalculatingState = DIRTY_RATE_STATUS_UNSTARTED;
+static struct DirtyRateStat DirtyStat;
static int dirtyrate_set_state(int *state, int old_state, int new_state)
{
@@ -34,6 +35,37 @@ static int dirtyrate_set_state(int *state, int old_state,
int new_state)
}
}
+static void reset_dirtyrate_stat(void)
+{
+ DirtyStat.total_dirty_samples = 0;
+ DirtyStat.total_sample_count = 0;
+ DirtyStat.total_block_mem_MB = 0;
+ DirtyStat.dirty_rate = 0;
+ DirtyStat.start_time = 0;
+ DirtyStat.calc_time = 0;
+}
+
+static void update_dirtyrate_stat(struct RamblockDirtyInfo *info)
+{
+ DirtyStat.total_dirty_samples += info->sample_dirty_count;
+ DirtyStat.total_sample_count += info->sample_pages_count;
+ /* size of total pages in MB */
+ DirtyStat.total_block_mem_MB += (info->ramblock_pages *
+ TARGET_PAGE_SIZE) >> 20;
+}
+
+static void update_dirtyrate(uint64_t msec)
+{
+ uint64_t dirtyrate;
+ uint64_t total_dirty_samples = DirtyStat.total_dirty_samples;
+ uint64_t total_sample_count = DirtyStat.total_sample_count;
+ uint64_t total_block_mem_MB = DirtyStat.total_block_mem_MB;
+
+ dirtyrate = total_dirty_samples * total_block_mem_MB *
+ 1000 / (total_sample_count * msec);
+
+ DirtyStat.dirty_rate = dirtyrate;
+}
static void calculate_dirtyrate(struct DirtyRateConfig config)
{
diff --git a/migration/dirtyrate.h b/migration/dirtyrate.h
index 479e222..a3ee305 100644
--- a/migration/dirtyrate.h
+++ b/migration/dirtyrate.h
@@ -42,6 +42,18 @@ struct RamblockDirtyInfo {
uint32_t *hash_result; /* array of hash result for sampled pages */
};
+/*
+ * Store calculation statistics for each measure.
+ */
+struct DirtyRateStat {
+ uint64_t total_dirty_samples; /* total dirty sampled page */
+ uint64_t total_sample_count; /* total sampled pages */
+ uint64_t total_block_mem_MB; /* size of total sampled pages in MB */
+ int64_t dirty_rate; /* dirty rate in MB/s */
+ int64_t start_time; /* calculation start time in units of second */
+ int64_t calc_time; /* time duration of two sampling in units of second */
+};
+
void *get_dirtyrate_thread(void *arg);
#endif
--
1.8.3.1
- [PATCH v6 00/12] *** A Method for evaluating dirty page rate ***, Chuan Zheng, 2020/08/28
- [PATCH v6 01/12] migration/dirtyrate: setup up query-dirtyrate framwork, Chuan Zheng, 2020/08/28
- [PATCH v6 03/12] migration/dirtyrate: Add RamblockDirtyInfo to store sampled page info, Chuan Zheng, 2020/08/28
- [PATCH v6 04/12] migration/dirtyrate: Add dirtyrate statistics series functions,
Chuan Zheng <=
- [PATCH v6 06/12] migration/dirtyrate: Record hash results for each sampled page, Chuan Zheng, 2020/08/28
- [PATCH v6 02/12] migration/dirtyrate: add DirtyRateStatus to denote calculation status, Chuan Zheng, 2020/08/28
- [PATCH v6 09/12] migration/dirtyrate: Implement set_sample_page_period() and get_sample_page_period(), Chuan Zheng, 2020/08/28
- [PATCH v6 10/12] migration/dirtyrate: Implement calculate_dirtyrate() function, Chuan Zheng, 2020/08/28
- [PATCH v6 08/12] migration/dirtyrate: skip sampling ramblock with size below MIN_RAMBLOCK_SIZE, Chuan Zheng, 2020/08/28