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migration/dirtyrate: Add dirtyrate statistics series functions 

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>
This commit is contained in:
Chuan Zheng 2020-09-16 14:21:59 +08:00 committed by Dr. David Alan Gilbert
parent a2635f0a75
commit c9a58d719b
2 changed files with 44 additions and 0 deletions
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32
migration/dirtyrate.c
View File

@ -23,6 +23,7 @@
#include "dirtyrate.h" #include "dirtyrate.h"
static int CalculatingState = DIRTY_RATE_STATUS_UNSTARTED; static int CalculatingState = DIRTY_RATE_STATUS_UNSTARTED;
static struct DirtyRateStat DirtyStat;
static int dirtyrate_set_state(int *state, int old_state, int new_state) 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 = -1;
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) static void calculate_dirtyrate(struct DirtyRateConfig config)
{ {

12
migration/dirtyrate.h
View File

@ -42,5 +42,17 @@ struct RamblockDirtyInfo {
uint32_t *hash_result; /* array of hash result for sampled pages */ 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); void *get_dirtyrate_thread(void *arg);
#endif #endif