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cloud-hypervisor/performance-metrics
Anatol Belski f7e40eec9a performance-metrics: Add QCOW2 write micro benchmark
Add micro_bench_qcow_write which times write_vectored calls through
QcowSync on an empty QCOW2 image. Each write allocates a new cluster
exercising map_cluster_for_write with L2 entry allocation and refcount
updates followed by pwrite_all.

Two TEST_LIST entries: micro_block_qcow_write_128_us and
micro_block_qcow_write_256_us with 128 and 256 cluster workloads.

Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
2026-04-16 17:27:38 +00:00
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