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migration: introduce pages-per-second

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It introduces a new statistic, pages-per-second, as bandwidth or mbps is
not enough to measure the performance of posting pages out as we have
compression, xbzrle, which can significantly reduce the amount of the
data size, instead, pages-per-second is the one we want

Signed-off-by: Xiao Guangrong <xiaoguangrong@tencent.com>
Message-Id: <20190111063732.10484-2-xiaoguangrong@tencent.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
  With typo's Eric spotted fixed
This commit is contained in:
Xiao Guangrong 2019-01-11 14:37:30 +08:00 • committed by Dr. David Alan Gilbert
parent de22ded044
commit aecbfe9c64
5 changed files with 31 additions and 3 deletions
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10
migration/migration.h
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@ -126,7 +126,13 @@ struct MigrationState
*/
QemuSemaphore rate_limit_sem;
/* bytes already send at the beggining of current interation */
/* pages already send at the beginning of current iteration */
uint64_t iteration_initial_pages;
/* pages transferred per second */
double pages_per_second;
/* bytes already send at the beginning of current iteration */
uint64_t iteration_initial_bytes;
/* time at the start of current iteration */
int64_t iteration_start_time;
@ -271,6 +277,8 @@ bool migrate_use_block_incremental(void);
int migrate_max_cpu_throttle(void);
bool migrate_use_return_path(void);
uint64_t ram_get_total_transferred_pages(void);
bool migrate_use_compression(void);
int migrate_compress_level(void);
int migrate_compress_threads(void);