diff options
| author | Chuan Zheng <zhengchuan@huawei.com> | 2020-09-16 14:21:59 +0800 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2020-09-25 12:45:57 +0100 |
| commit | c9a58d719ba7b059d53d1b84ff3458be68cce5c8 (patch) | |
| tree | 5875f195e19aed0e33477b2fc6530ce8de55c4af /migration | |
| parent | a2635f0a7508c3291c6bd2d88ea31b6ae7dfa341 (diff) | |
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>
Diffstat (limited to 'migration')
| -rw-r--r-- | migration/dirtyrate.c | 32 | ||||
| -rw-r--r-- | migration/dirtyrate.h | 12 |
2 files changed, 44 insertions, 0 deletions
diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c index 3edf000f45..94c4e173bc 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 = -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) { diff --git a/migration/dirtyrate.h b/migration/dirtyrate.h index 8707df852d..312debca6f 100644 --- a/migration/dirtyrate.h +++ b/migration/dirtyrate.h @@ -42,5 +42,17 @@ 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 |