{ "source": { "artifact_id": 13078433059, "release_label": "0.7.2", "architecture": "x86_64", "source_commit": "f2b2a6d9b28d4582aec86b8911af388cf38c88ee", "artifact_created_at_utc": "2026-11-01T09:54:55Z", "workflow_run_url": "https://github.com/google/capsem/actions/runs/41286217998", "archive_sha256": "cc34fb4d852cdd45010814531c047d81d30b89fcf328a5ffa715f4206fba69d1" }, "records": { "capsem-bench/data_0.7.2_x86_64.json": { "version": "0.3.0", "timestamp": 1793526674.1787477, "hostname": "bench-c8bfc976", "disk": { "directory": "/root", "size_mb": 256, "seq_write": { "size_bytes": 268435456, "block_size": 1048576, "duration_ms": 1112.7, "throughput_mbps": 230.1 }, "seq_read": { "size_bytes": 268435456, "block_size": 1048576, "duration_ms": 53.2, "throughput_mbps": 4808.5 }, "rand_write_4k": { "count": 10000, "block_size": 4096, "duration_ms": 3538.7, "iops": 2825.9, "throughput_mbps": 11.0 }, "rand_read_4k": { "count": 10000, "block_size": 4096, "duration_ms": 448.8, "iops": 22282.7, "throughput_mbps": 87.0 } }, "rootfs": { "scan_dirs": [ "/usr/bin", "/usr/lib" ], "largest_file": "/usr/bin/python3.11", "largest_file_size": 6834488, "seq_read": { "file": "/usr/bin/python3.11", "size_bytes": 6834488, "block_size": 1048576, "duration_ms": 3.0, "throughput_mbps": 2171.4 }, "files_found": 4337, "rand_read_4k": { "count": 5000, "files_sampled": 2248, "block_size": 4096, "duration_ms": 264.7, "iops": 18890.6, "throughput_mbps": 73.8 }, "large_binary_seq_read": { "count": 0, "error": "no large files found" }, "small_js_read": { "count": 5000, "files_sampled": 1250, "bytes_read": 54120676, "duration_ms": 139.5, "ops_per_sec": 35839.6, "throughput_mbps": 370.0 }, "metadata_stat": { "entries": 4858, "files": 4337, "dirs": 371, "symlinks": 150, "errors": 0, "duration_ms": 105.9, "stats_per_sec": 45875.4 } }, "storage": { "kernel": { "cmdline": { "raw": "console=ttyS0 swiotlb=2048 root=/dev/vda ro loglevel=4 quiet init_on_alloc=0 init_on_free=0 slab_nomerge page_alloc.shuffle=1 oops=panic random.trust_cpu=1 capsem.storage=virtiofs capsem.rootfs=erofs capsem.vsock_port_offset=15960 virtio_mmio.device=0x200@0xd0000000:5 virtio_mmio.device=0x200@0xd0000200:6 virtio_mmio.device=0x200@0xd0000400:7 virtio_mmio.device=0x200@0xd0000600:8 virtio_mmio.device=0x200@0xd0000800:9 virtio_mmio.device=0x200@0xd0000a00:10", "args": [ "console=ttyS0", "swiotlb=2048", "root=/dev/vda", "ro", "loglevel=4", "quiet", "init_on_alloc=0", "init_on_free=0", "slab_nomerge", "page_alloc.shuffle=1", "oops=panic", "random.trust_cpu=1", "capsem.storage=virtiofs", "capsem.rootfs=erofs", "capsem.vsock_port_offset=15960", "virtio_mmio.device=0x200@0xd0000000:5", "virtio_mmio.device=0x200@0xd0000200:6", "virtio_mmio.device=0x200@0xd0000400:7", "virtio_mmio.device=0x200@0xd0000600:8", "virtio_mmio.device=0x200@0xd0000800:9", "virtio_mmio.device=0x200@0xd0000a00:10" ] }, "block_queues": { "vda": { "scheduler": "[none]", "read_ahead_kb": 4096, "nr_requests": 128, "rotational": 1, 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"sysfs", "source": "sysfs", "options": "rw" }, { "mount_point": "/sys/fs/cgroup", "root": "/", "fs_type": "cgroup2", "source": "cgroup2", "options": "rw" }, { "mount_point": "/dev", "root": "/", "fs_type": "devtmpfs", "source": "devtmpfs", "options": "rw,size=1018332k,nr_inodes=254583,mode=755" }, { "mount_point": "/dev/pts", "root": "/", "fs_type": "devpts", "source": "devpts", "options": "rw,mode=600,ptmxmode=000" }, { "mount_point": "/run", "root": "/", "fs_type": "tmpfs", "source": "tmpfs", "options": "rw,mode=755" }, { "mount_point": "/tmp", "root": "/", "fs_type": "tmpfs", "source": "tmpfs", "options": "rw" }, { "mount_point": "/var/log", "root": "/", "fs_type": "tmpfs", "source": "tmpfs", "options": "rw,mode=755" }, { "mount_point": "/dev/.capsem-system", "root": "/", "fs_type": "ext4", "source": "/dev/vdb", "options": "rw,data=ordered" }, { "mount_point": "/root", "root": "/workspace", "fs_type": "virtiofs", "source": "capsem", "options": "rw" }, { "mount_point": "/etc/resolv.conf", "root": "/resolv.conf", "fs_type": "tmpfs", "source": "tmpfs", "options": "rw,mode=755" }, { "mount_point": "/etc/hosts", "root": "/hosts", "fs_type": "tmpfs", "source": "tmpfs", "options": "rw,mode=755" } ], "paths": { "/": { "path": "/", "exists": true, "writable": true, "mount": { "mount_point": "/", "root": "/", "fs_type": "overlay", "source": "overlay", "options": "rw,lowerdir=/mnt/a,upperdir=/mnt/system/upper,workdir=/mnt/system/work,uuid=on,metacopy=on" }, "mode": "drwxr-xr-x", "statvfs": { "block_size": 4096, "fragment_size": 4096, "blocks": 16499595, "blocks_free": 16498013, "blocks_available": 16493917, "files": 4194304, "files_free": 4194227 } }, "/root": { "path": "/root", "exists": true, "writable": true, "mount": { "mount_point": "/root", "root": "/workspace", "fs_type": "virtiofs", "source": "capsem", "options": "rw" }, "mode": "drwxr-xr-x", "statvfs": { "block_size": 4096, "fragment_size": 4096, "blocks": 37815964, "blocks_free": 18364219, "blocks_available": 18360123, "files": 19529728, "files_free": 18219032 } }, "/tmp": { "path": "/tmp", "exists": true, "writable": true, "mount": { "mount_point": "/tmp", "root": "/", "fs_type": "tmpfs", "source": "tmpfs", "options": "rw" }, "mode": "drwxrwxrwt", "statvfs": { "block_size": 4096, "fragment_size": 4096, "blocks": 255787, "blocks_free": 255786, "blocks_available": 255786, "files": 255787, "files_free": 255785 } }, "/var/tmp": { "path": "/var/tmp", "exists": true, "writable": true, "mount": { "mount_point": "/", "root": "/", "fs_type": "overlay", "source": "overlay", "options": "rw,lowerdir=/mnt/a,upperdir=/mnt/system/upper,workdir=/mnt/system/work,uuid=on,metacopy=on" }, "mode": "drwxrwxrwt", "statvfs": { "block_size": 4096, "fragment_size": 4096, "blocks": 16499595, "blocks_free": 16498013, "blocks_available": 16493917, "files": 4194304, "files_free": 4194227 } }, "/var/log": { "path": "/var/log", "exists": true, "writable": true, "mount": { "mount_point": "/var/log", "root": "/", "fs_type": "tmpfs", "source": "tmpfs", "options": "rw,mode=755" }, "mode": "drwxr-xr-x", "statvfs": { "block_size": 4096, "fragment_size": 4096, "blocks": 255787, "blocks_free": 255776, "blocks_available": 255776, "files": 255787, "files_free": 255784 } }, "/run": { "path": "/run", "exists": true, "writable": true, "mount": { "mount_point": "/run", "root": "/", "fs_type": "tmpfs", "source": "tmpfs", "options": "rw,mode=755" }, "mode": "drwxr-xr-x", "statvfs": { "block_size": 4096, "fragment_size": 4096, "blocks": 255787, "blocks_free": 247859, "blocks_available": 247859, "files": 255787, "files_free": 254100 } }, "/usr/bin": { "path": "/usr/bin", "exists": true, "writable": true, "mount": { "mount_point": "/", "root": "/", "fs_type": "overlay", "source": "overlay", "options": "rw,lowerdir=/mnt/a,upperdir=/mnt/system/upper,workdir=/mnt/system/work,uuid=on,metacopy=on" }, "mode": "drwxr-xr-x", "statvfs": { "block_size": 4096, "fragment_size": 4096, "blocks": 16499595, "blocks_free": 16498013, "blocks_available": 16493917, "files": 4194304, "files_free": 4194227 } }, "/usr/lib": { "path": "/usr/lib", "exists": true, "writable": true, "mount": { "mount_point": "/", "root": "/", "fs_type": "overlay", "source": "overlay", "options": "rw,lowerdir=/mnt/a,upperdir=/mnt/system/upper,workdir=/mnt/system/work,uuid=on,metacopy=on" }, "mode": "drwxr-xr-x", "statvfs": { "block_size": 4096, "fragment_size": 4096, "blocks": 16499595, "blocks_free": 16498013, "blocks_available": 16493917, "files": 4194304, "files_free": 4194227 } } }, "rootfs": { "scan_dirs": [ "/usr/bin", "/usr/lib" ], "files_found": 2637, "largest_file": "/usr/bin/python3.11", "largest_file_size": 6834488, "backing": { "root_mount": { "mount_point": "/", "root": "/", "fs_type": "overlay", "source": "overlay", "options": "rw,lowerdir=/mnt/a,upperdir=/mnt/system/upper,workdir=/mnt/system/work,uuid=on,metacopy=on" }, "overlay_lowerdir": "/mnt/a", "overlay_upperdir": "/mnt/system/upper", "overlay_workdir": "/mnt/system/work", "erofs_mounts": [], "squashfs_superblock": { "device": "/dev/vda", "magic": "0x00000000", "error": "not squashfs", "read_ahead_kb": 4096 } }, "seq_reads": [ { "label": "largest", "path": "/usr/bin/python3.11", "size_bytes": 6834488, "mount": { "mount_point": "/", "root": "/", "fs_type": "overlay", "source": "overlay", "options": "rw,lowerdir=/mnt/a,upperdir=/mnt/system/upper,workdir=/mnt/system/work,uuid=on,metacopy=on" }, "cold": { "size_bytes": 6834488, "block_size": 1048576, "duration_ms": 3.1, "throughput_mbps": 2092.3 }, "warm": { "size_bytes": 6834488, "block_size": 1048576, "duration_ms": 0.8, "throughput_mbps": 8255.3 } }, { "label": "bash", "path": "/bin/bash", "size_bytes": 1265648, "mount": { "mount_point": "/", "root": "/", "fs_type": "overlay", "source": "overlay", "options": "rw,lowerdir=/mnt/a,upperdir=/mnt/system/upper,workdir=/mnt/system/work,uuid=on,metacopy=on" }, "cold": { "size_bytes": 1265648, "block_size": 1048576, "duration_ms": 0.3, "throughput_mbps": 3671.7 }, "warm": { "size_bytes": 1265648, "block_size": 1048576, "duration_ms": 0.1, "throughput_mbps": 13498.0 } }, { "label": "python3", "path": "/usr/bin/python3", "size_bytes": 6834488, "mount": { "mount_point": "/", "root": "/", "fs_type": "overlay", "source": "overlay", "options": "rw,lowerdir=/mnt/a,upperdir=/mnt/system/upper,workdir=/mnt/system/work,uuid=on,metacopy=on" }, "cold": { "size_bytes": 6834488, "block_size": 1048576, "duration_ms": 7.6, "throughput_mbps": 855.1 }, "warm": { "size_bytes": 6834488, "block_size": 1048576, "duration_ms": 0.7, "throughput_mbps": 9828.3 } }, { "label": "curl", "path": "/usr/bin/curl", "size_bytes": 280800, "mount": { "mount_point": "/", "root": "/", "fs_type": "overlay", "source": "overlay", "options": "rw,lowerdir=/mnt/a,upperdir=/mnt/system/upper,workdir=/mnt/system/work,uuid=on,metacopy=on" }, "cold": { "size_bytes": 280800, "block_size": 1048576, "duration_ms": 0.3, "throughput_mbps": 886.1 }, "warm": { "size_bytes": 280800, "block_size": 1048576, "duration_ms": 0.0, "throughput_mbps": 8000.9 } } ], "rand_read_4k": { "count": 2000, "files_sampled": 1397, "duration_ms": 146.0, "iops": 13695.4, "throughput_mbps": 53.5 } }, "writable": { "/root": { "path": "/root", "size_mb": 64, "seq_write": { "size_bytes": 67108864, "block_size": 1048576, "duration_ms": 267.2, "throughput_mbps": 239.5 }, "seq_read_cold": { "size_bytes": 67108864, "block_size": 1048576, "duration_ms": 13.1, "throughput_mbps": 4874.3 }, "seq_read_warm": { "size_bytes": 67108864, "block_size": 1048576, "duration_ms": 12.7, "throughput_mbps": 5020.8 }, "rand_write_4k": { "count": 10000, "block_size": 4096, "duration_ms": 3482.5, "iops": 2871.5, "throughput_mbps": 11.2 }, "rand_read_4k": { "count": 10000, "block_size": 4096, "duration_ms": 446.6, "iops": 22392.8, "throughput_mbps": 87.5 }, "io_profile": { "path": "/root", "size_mb": 64, "random_ops": 2000, "sequential": { "4k": { "write": { "size_bytes": 67108864, "block_size": 4096, "count": 16384, "duration_ms": 1280.1, "iops": 12799.0, "throughput_mbps": 50.0, "avg_latency_ms": 0.078 }, "read_cold": { "size_bytes": 67108864, "block_size": 4096, "count": 16384, "duration_ms": 57.5, "iops": 284812.1, "throughput_mbps": 1112.5, "avg_latency_ms": 0.004 }, "read_warm": { "size_bytes": 67108864, "block_size": 4096, "count": 16384, "duration_ms": 46.2, "iops": 354769.8, "throughput_mbps": 1385.8, "avg_latency_ms": 0.003 } }, "64k": { "write": { "size_bytes": 67108864, "block_size": 65536, "count": 1024, "duration_ms": 337.1, "iops": 3037.3, "throughput_mbps": 189.8, "avg_latency_ms": 0.329 }, "read_cold": { "size_bytes": 67108864, "block_size": 65536, "count": 1024, "duration_ms": 28.4, "iops": 36049.8, "throughput_mbps": 2253.1, "avg_latency_ms": 0.028 }, "read_warm": { "size_bytes": 67108864, "block_size": 65536, "count": 1024, "duration_ms": 27.9, "iops": 36695.9, "throughput_mbps": 2293.5, "avg_latency_ms": 0.027 } }, "1m": { "write": { 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"/tmp": { "path": "/tmp", "size_mb": 64, "seq_write": { "size_bytes": 67108864, "block_size": 1048576, "duration_ms": 15.0, "throughput_mbps": 4269.6 }, "seq_read_cold": { "size_bytes": 67108864, "block_size": 1048576, "duration_ms": 8.4, "throughput_mbps": 7599.8 }, "seq_read_warm": { "size_bytes": 67108864, "block_size": 1048576, "duration_ms": 8.7, "throughput_mbps": 7316.2 }, "rand_write_4k": { "count": 10000, "block_size": 4096, "duration_ms": 19.7, "iops": 506543.3, "throughput_mbps": 1978.7 }, "rand_read_4k": { "count": 10000, "block_size": 4096, "duration_ms": 6.2, "iops": 1618291.9, "throughput_mbps": 6321.5 }, "io_profile": { "path": "/tmp", "size_mb": 64, "random_ops": 2000, "sequential": { "4k": { "write": { "size_bytes": 67108864, "block_size": 4096, "count": 16384, "duration_ms": 24.8, "iops": 660705.1, "throughput_mbps": 2580.9, "avg_latency_ms": 0.002 }, "read_cold": { "size_bytes": 67108864, "block_size": 4096, "count": 16384, "duration_ms": 17.0, "iops": 961346.4, 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"iops": 7760.5, "throughput_mbps": 7760.5, "avg_latency_ms": 0.129 }, "read_warm": { "size_bytes": 67108864, "block_size": 1048576, "count": 64, "duration_ms": 10.5, "iops": 6084.7, "throughput_mbps": 6084.7, "avg_latency_ms": 0.164 } } }, "random": { "read_4k": { "size_bytes": 8192000, "block_size": 4096, "count": 2000, "duration_ms": 2.5, "iops": 801393.5, "throughput_mbps": 3130.4, "avg_latency_ms": 0.001, "latency_ms": { "p50": 0.001, "p95": 0.001, "p99": 0.002, "max": 0.025 } }, "write_4k_sync": { "size_bytes": 8192000, "block_size": 4096, "count": 2000, "duration_ms": 3.4, "iops": 584707.8, "throughput_mbps": 2284.0, "avg_latency_ms": 0.002, "latency_ms": { "p50": 0.002, "p95": 0.002, "p99": 0.002, "max": 0.022 }, "sync_each": true } } } }, "/var/tmp": { "path": "/var/tmp", "size_mb": 64, "seq_write": { "size_bytes": 67108864, "block_size": 1048576, "duration_ms": 86.6, "throughput_mbps": 739.0 }, "seq_read_cold": { "size_bytes": 67108864, "block_size": 1048576, "duration_ms": 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