{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:FCYSHKZKZ2ZSKUL2PARM73J3FY","short_pith_number":"pith:FCYSHKZK","canonical_record":{"source":{"id":"1906.07124","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cs.OS","submitted_at":"2019-06-17T16:49:56Z","cross_cats_sorted":[],"title_canon_sha256":"59cb3148fc33d331ba95eed025c4cbf68905e86613d8ac316a1a3ab420e16b5c","abstract_canon_sha256":"3566ae39ddf4d642073bdb34451166b2895c5c5189e373172692a1f3a132f105"},"schema_version":"1.0"},"canonical_sha256":"28b123ab2aceb325517a7822cfed3b2e2b393bb67b2f0fa738ecf1de7c0a0c86","source":{"kind":"arxiv","id":"1906.07124","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.07124","created_at":"2026-05-17T23:43:11Z"},{"alias_kind":"arxiv_version","alias_value":"1906.07124v1","created_at":"2026-05-17T23:43:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.07124","created_at":"2026-05-17T23:43:11Z"},{"alias_kind":"pith_short_12","alias_value":"FCYSHKZKZ2ZS","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"FCYSHKZKZ2ZSKUL2","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"FCYSHKZK","created_at":"2026-05-18T12:33:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:FCYSHKZKZ2ZSKUL2PARM73J3FY","target":"record","payload":{"canonical_record":{"source":{"id":"1906.07124","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cs.OS","submitted_at":"2019-06-17T16:49:56Z","cross_cats_sorted":[],"title_canon_sha256":"59cb3148fc33d331ba95eed025c4cbf68905e86613d8ac316a1a3ab420e16b5c","abstract_canon_sha256":"3566ae39ddf4d642073bdb34451166b2895c5c5189e373172692a1f3a132f105"},"schema_version":"1.0"},"canonical_sha256":"28b123ab2aceb325517a7822cfed3b2e2b393bb67b2f0fa738ecf1de7c0a0c86","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:43:11.822725Z","signature_b64":"CXea/vqh0qA37HHEwwowaYPPvPpKpO15K1mLbwuJc9g3NPxxh3hfv5iO3mXHbenkfYLhm6jtxAC76IULblv4CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"28b123ab2aceb325517a7822cfed3b2e2b393bb67b2f0fa738ecf1de7c0a0c86","last_reissued_at":"2026-05-17T23:43:11.822116Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:43:11.822116Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1906.07124","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:43:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tHxAeVd6AxAcDWCbkfQvGUDRsI0c/mfZcpQRo7n4sks0oiIMSP7P/bLe+D4IFh+wj5FOKdk+eTFzELFXbvW9CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T23:28:10.148812Z"},"content_sha256":"8eb1494b5a00f7ff66301afd2b69387595a3d3d77c9b79417d05fef425ea6a94","schema_version":"1.0","event_id":"sha256:8eb1494b5a00f7ff66301afd2b69387595a3d3d77c9b79417d05fef425ea6a94"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:FCYSHKZKZ2ZSKUL2PARM73J3FY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Slicing the IO execution with ReLayTracer","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.OS","authors_text":"Ganguk Lee, Jeongseob Ahn, Yeaseul Park, Youngjin Kwon","submitted_at":"2019-06-17T16:49:56Z","abstract_excerpt":"Analyzing IO performance anomalies is a crucial task in various computing environments, ranging from large-scale cloud applications to desktop applications. However, the IO stack of modern operating systems is complicated, making it hard to understand the performance anomalies with existing tools. Kernel IO executions are frequently interrupted by internal kernel activities, requiring a sophisticated IO profile tool to deal with the noises. Furthermore, complicated interactions of concurrent IO requests cause different sources of tail latencies in kernel IO stack. As a consequence, developers "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.07124","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:43:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BeLtA3pi8Zxs3jPuEH3TOCh80X7e8VMQJewYXzxsZcgw9mm57MOzrqcsOn4p/jPeVVZ2MryJpXkvsZB7srGxCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T23:28:10.149161Z"},"content_sha256":"7746a434dc75e23476dc2fee467d0145920f91050230c9e73ffc66a7ceb5597f","schema_version":"1.0","event_id":"sha256:7746a434dc75e23476dc2fee467d0145920f91050230c9e73ffc66a7ceb5597f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FCYSHKZKZ2ZSKUL2PARM73J3FY/bundle.json","state_url":"https://pith.science/pith/FCYSHKZKZ2ZSKUL2PARM73J3FY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FCYSHKZKZ2ZSKUL2PARM73J3FY/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-02T23:28:10Z","links":{"resolver":"https://pith.science/pith/FCYSHKZKZ2ZSKUL2PARM73J3FY","bundle":"https://pith.science/pith/FCYSHKZKZ2ZSKUL2PARM73J3FY/bundle.json","state":"https://pith.science/pith/FCYSHKZKZ2ZSKUL2PARM73J3FY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FCYSHKZKZ2ZSKUL2PARM73J3FY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:FCYSHKZKZ2ZSKUL2PARM73J3FY","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"3566ae39ddf4d642073bdb34451166b2895c5c5189e373172692a1f3a132f105","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cs.OS","submitted_at":"2019-06-17T16:49:56Z","title_canon_sha256":"59cb3148fc33d331ba95eed025c4cbf68905e86613d8ac316a1a3ab420e16b5c"},"schema_version":"1.0","source":{"id":"1906.07124","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.07124","created_at":"2026-05-17T23:43:11Z"},{"alias_kind":"arxiv_version","alias_value":"1906.07124v1","created_at":"2026-05-17T23:43:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.07124","created_at":"2026-05-17T23:43:11Z"},{"alias_kind":"pith_short_12","alias_value":"FCYSHKZKZ2ZS","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"FCYSHKZKZ2ZSKUL2","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"FCYSHKZK","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:7746a434dc75e23476dc2fee467d0145920f91050230c9e73ffc66a7ceb5597f","target":"graph","created_at":"2026-05-17T23:43:11Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Analyzing IO performance anomalies is a crucial task in various computing environments, ranging from large-scale cloud applications to desktop applications. However, the IO stack of modern operating systems is complicated, making it hard to understand the performance anomalies with existing tools. Kernel IO executions are frequently interrupted by internal kernel activities, requiring a sophisticated IO profile tool to deal with the noises. Furthermore, complicated interactions of concurrent IO requests cause different sources of tail latencies in kernel IO stack. As a consequence, developers ","authors_text":"Ganguk Lee, Jeongseob Ahn, Yeaseul Park, Youngjin Kwon","cross_cats":[],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cs.OS","submitted_at":"2019-06-17T16:49:56Z","title":"Slicing the IO execution with ReLayTracer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.07124","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:8eb1494b5a00f7ff66301afd2b69387595a3d3d77c9b79417d05fef425ea6a94","target":"record","created_at":"2026-05-17T23:43:11Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"3566ae39ddf4d642073bdb34451166b2895c5c5189e373172692a1f3a132f105","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cs.OS","submitted_at":"2019-06-17T16:49:56Z","title_canon_sha256":"59cb3148fc33d331ba95eed025c4cbf68905e86613d8ac316a1a3ab420e16b5c"},"schema_version":"1.0","source":{"id":"1906.07124","kind":"arxiv","version":1}},"canonical_sha256":"28b123ab2aceb325517a7822cfed3b2e2b393bb67b2f0fa738ecf1de7c0a0c86","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"28b123ab2aceb325517a7822cfed3b2e2b393bb67b2f0fa738ecf1de7c0a0c86","first_computed_at":"2026-05-17T23:43:11.822116Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:43:11.822116Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CXea/vqh0qA37HHEwwowaYPPvPpKpO15K1mLbwuJc9g3NPxxh3hfv5iO3mXHbenkfYLhm6jtxAC76IULblv4CQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:43:11.822725Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.07124","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8eb1494b5a00f7ff66301afd2b69387595a3d3d77c9b79417d05fef425ea6a94","sha256:7746a434dc75e23476dc2fee467d0145920f91050230c9e73ffc66a7ceb5597f"],"state_sha256":"a47527eaa473df545926d43095e122958732b722f1c77ae13ac02645639f6310"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Hb7SlAQEWgzPy3A316WQd1JPtH2DANqUQ445cgtNuLGZ3q0xRDo18YkOFV5e1v3AKLEXegRHAktOAATjog98Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-02T23:28:10.151144Z","bundle_sha256":"ce1e44eba75600761eb6afe16d4060f928962b6bbedaf51ad8c2d4220124b4b1"}}