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performance-metrics: Add standalone qcow2 perf tests

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Add performance tests for standalone qcow2 images without backing
files - uncompressed, zlib and zstd compressed. Each variant
includes single queue and multiqueue tests for sequential
read, random read and warmed up sequential read.

Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
This commit is contained in:
Anatol Belski
2026-02-15 18:05:33 +01:00
committed by Rob Bradford
parent 333db1acb3
commit 16d6a16e5c
2 changed files with 302 additions and 1 deletions
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25
performance-metrics/src/performance_tests.rs
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@@ -37,6 +37,9 @@ const QCOW2_BACKING_FILE: &str = "/var/tmp/ch-blk-io-test-qcow2-backing.qcow2";
pub const OVERLAY_WITH_QCOW2_BACKING: &str = "/var/tmp/ch-blk-io-test-overlay-qcow2.qcow2";
const RAW_BACKING_FILE: &str = "/var/tmp/ch-blk-io-test-raw-backing.raw";
pub const OVERLAY_WITH_RAW_BACKING: &str = "/var/tmp/ch-blk-io-test-overlay-raw.qcow2";
pub const QCOW2_UNCOMPRESSED_IMG: &str = "/var/tmp/ch-blk-io-test-uncompressed.qcow2";
pub const QCOW2_ZLIB_IMG: &str = "/var/tmp/ch-blk-io-test-zlib.qcow2";
pub const QCOW2_ZSTD_IMG: &str = "/var/tmp/ch-blk-io-test-zstd.qcow2";
pub fn init_tests(overrides: &PerformanceTestOverrides) {
let mut cmd = format!("dd if=/dev/zero of={BLK_IO_TEST_IMG} bs=1M count=4096");
@@ -78,6 +81,22 @@ pub fn init_tests(overrides: &PerformanceTestOverrides) {
"qemu-img create -f qcow2 -b {RAW_BACKING_FILE} -F raw {OVERLAY_WITH_RAW_BACKING} 4G"
);
assert!(exec_host_command_output(&cmd).status.success());
// Standalone QCOW2 image with no backing file
cmd = format!("qemu-img create -f qcow2 -o preallocation=full {QCOW2_UNCOMPRESSED_IMG} 4G");
assert!(exec_host_command_output(&cmd).status.success());
// Zlib compressed QCOW2 image, convert populates actual compressed clusters
cmd = format!(
"qemu-img convert -f qcow2 -O qcow2 -c -o compression_type=zlib {QCOW2_UNCOMPRESSED_IMG} {QCOW2_ZLIB_IMG}"
);
assert!(exec_host_command_output(&cmd).status.success());
// Zstd compressed QCOW2 image, convert populates actual compressed clusters
cmd = format!(
"qemu-img convert -f qcow2 -O qcow2 -c -o compression_type=zstd {QCOW2_UNCOMPRESSED_IMG} {QCOW2_ZSTD_IMG}"
);
assert!(exec_host_command_output(&cmd).status.success());
}
pub fn cleanup_tests() {
@@ -91,6 +110,12 @@ pub fn cleanup_tests() {
.unwrap_or_else(|_| panic!("Failed to remove file '{RAW_BACKING_FILE}'."));
fs::remove_file(OVERLAY_WITH_RAW_BACKING)
.unwrap_or_else(|_| panic!("Failed to remove file '{OVERLAY_WITH_RAW_BACKING}'."));
fs::remove_file(QCOW2_UNCOMPRESSED_IMG)
.unwrap_or_else(|_| panic!("Failed to remove file '{QCOW2_UNCOMPRESSED_IMG}'."));
fs::remove_file(QCOW2_ZLIB_IMG)
.unwrap_or_else(|_| panic!("Failed to remove file '{QCOW2_ZLIB_IMG}'."));
fs::remove_file(QCOW2_ZSTD_IMG)
.unwrap_or_else(|_| panic!("Failed to remove file '{QCOW2_ZSTD_IMG}'."));
}
// Performance tests are expected to be executed sequentially, so we can