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performance-metrics: Add QCOW2 async multicluster read micro benchmark

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Add micro_bench_qcow_async_multi_cluster_read which reads 8
contiguous clusters (512 KiB) per request through the QcowAsync
io_uring path. With coalesced mappings this can hit the io_uring
fast path for a single Readv SQE.

Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
This commit is contained in:
Anatol Belski
2026-03-27 11:06:08 +01:00
committed by Rob Bradford
parent 377c260196
commit 2041ba5a91
2 changed files with 53 additions and 1 deletions
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26
performance-metrics/src/main.rs
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@@ -378,7 +378,7 @@ mod adjuster {
}
}
const TEST_LIST: [PerformanceTest; 88] = [
const TEST_LIST: [PerformanceTest; 90] = [
PerformanceTest {
name: "boot_time_ms",
func_ptr: performance_boot_time,
@@ -1565,6 +1565,30 @@ const TEST_LIST: [PerformanceTest; 88] = [
},
unit_adjuster: adjuster::s_to_us,
},
PerformanceTest {
name: "micro_block_qcow_async_multi_cluster_read_128_us",
func_ptr: micro_bench_block::micro_bench_qcow_async_multi_cluster_read,
control: PerformanceTestControl {
test_timeout: 10,
test_iterations: 20,
warmup_iterations: 5,
num_ops: Some(128),
..PerformanceTestControl::default()
},
unit_adjuster: adjuster::s_to_us,
},
PerformanceTest {
name: "micro_block_qcow_async_multi_cluster_read_256_us",
func_ptr: micro_bench_block::micro_bench_qcow_async_multi_cluster_read,
control: PerformanceTestControl {
test_timeout: 10,
test_iterations: 20,
warmup_iterations: 5,
num_ops: Some(256),
..PerformanceTestControl::default()
},
unit_adjuster: adjuster::s_to_us,
},
];
fn run_test_with_timeout(