diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/accounting.c | 12 | ||||
| -rw-r--r-- | block/qapi.c | 5 |
2 files changed, 17 insertions, 0 deletions
diff --git a/block/accounting.c b/block/accounting.c index 61de8ce9bc..a9419315a3 100644 --- a/block/accounting.c +++ b/block/accounting.c @@ -143,3 +143,15 @@ int64_t block_acct_idle_time_ns(BlockAcctStats *stats) { return qemu_clock_get_ns(clock_type) - stats->last_access_time_ns; } + +double block_acct_queue_depth(BlockAcctTimedStats *stats, + enum BlockAcctType type) +{ + uint64_t sum, elapsed; + + assert(type < BLOCK_MAX_IOTYPE); + + sum = timed_average_sum(&stats->latency[type], &elapsed); + + return (double) sum / elapsed; +} diff --git a/block/qapi.c b/block/qapi.c index 6169a22243..d20262decb 100644 --- a/block/qapi.c +++ b/block/qapi.c @@ -402,6 +402,11 @@ static BlockStats *bdrv_query_stats(const BlockDriverState *bs, dev_stats->min_flush_latency_ns = timed_average_min(fl); dev_stats->max_flush_latency_ns = timed_average_max(fl); dev_stats->avg_flush_latency_ns = timed_average_avg(fl); + + dev_stats->avg_rd_queue_depth = + block_acct_queue_depth(ts, BLOCK_ACCT_READ); + dev_stats->avg_wr_queue_depth = + block_acct_queue_depth(ts, BLOCK_ACCT_WRITE); } } |