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virtio-devices: block: Fix the latency counter for max read/write

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See: #5712

Signed-off-by: Bo Chen <chen.bo@intel.com>
This commit is contained in:
Bo Chen 2023-09-11 11:34:54 -07:00 committed by Rob Bradford
parent b76d0e8b50
commit 9c994f882a
1 changed files with 4 additions and 6 deletions
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10
virtio-devices/src/block.rs
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@ -283,6 +283,8 @@ impl BlockEpollHandler {
let latency = request.start.elapsed().as_micros() as u64;
let read_ops_last = self.counters.read_ops.load(Ordering::Relaxed);
let write_ops_last = self.counters.write_ops.load(Ordering::Relaxed);
let read_max = self.counters.read_latency_max.load(Ordering::Relaxed);
let write_max = self.counters.write_latency_max.load(Ordering::Relaxed);
let mut read_avg = self.counters.read_latency_avg.load(Ordering::Relaxed);
let mut write_avg = self.counters.write_latency_avg.load(Ordering::Relaxed);
let (status, len) = if result >= 0 {
@ -297,9 +299,7 @@ impl BlockEpollHandler {
.read_latency_min
.store(latency, Ordering::Relaxed);
}
if latency > self.counters.read_latency_max.load(Ordering::Relaxed)
|| latency == u64::MAX
{
if latency > read_max || read_max == u64::MAX {
self.counters
.read_latency_max
.store(latency, Ordering::Relaxed);
@ -331,9 +331,7 @@ impl BlockEpollHandler {
.write_latency_min
.store(latency, Ordering::Relaxed);
}
if latency > self.counters.write_latency_max.load(Ordering::Relaxed)
|| latency == u64::MAX
{
if latency > write_max || write_max == u64::MAX {
self.counters
.write_latency_max
.store(latency, Ordering::Relaxed);