{ "diagnostic_only": true, "publishable": false, "network_benchmark": false, "verified_controls": [ { "variant": "baseline", "diagnostic_only": true, "publishable": false, "command": [ "/usr/bin/java", "-XX:-TieredCompilation", "-XX:+UnlockDiagnosticVMOptions", "-XX:+LogCompilation", "-XX:LogFile=/tmp/libhft-java-cache-trap-20260910-DkQ1ut/baseline-v2/jit.xml", "-XX:CompileCommand=dontinline,com/atrekes/libhft/PureJavaHftSession$SeenNewOrderSingleClOrdIds.remember", "-Xlog:jit+compilation=debug:stdout:timenanos,uptimenanos,pid,tid,level,tags", "-cp", "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/classes:/usr/local/libexec/libhft-bench/java-fix/libs/libhft-java-0.1.0-SNAPSHOT.jar", "CacheTrap" ], "installed_jar": "/usr/local/libexec/libhft-bench/java-fix/libs/libhft-java-0.1.0-SNAPSHOT.jar", "installed_jar_sha256": "e1a8b47d8eb8ff3cac84ca08e436ea93c1fafe4ff4310c11b49700ab3f5c4116", "cache_traps": [ { "thread": "1159090", "reason": "unstable_if", "action": "reinterpret", "debug_id": "0", "compile_id": "45", "compiler": "c2", "stamp": "0.216", "frames": [ { "bci": "119", "method": "com.atrekes.libhft.PureJavaHftSession$SeenNewOrderSingleClOrdIds remember ([BI)V", "bytes": "140", "count": "1613", "backedge_count": "25808", "iicount": "1613" } ] }, { "thread": "1159090", "reason": "unstable_if", "action": "reinterpret", "debug_id": "0", "compile_id": "46", "compiler": "c2", "count": "1", "stamp": "2.679", "frames": [ { "bci": "89", "method": "com.atrekes.libhft.PureJavaHftSession$SeenNewOrderSingleClOrdIds remember ([BI)V", "bytes": "140", "count": "2718", "backedge_count": "43488", "iicount": "2718", "decompiles": "1", "unstable_if_traps": "1" } ] } ], "cache_jit_lines": [ "[1106007070769369ns][195654870ns][1159089][1159102][debug][jit,compilation] 45 com.atrekes.libhft.PureJavaHftSession$SeenNewOrderSingleClOrdIds::remember (140 bytes)", "[1106007090800987ns][215686473ns][1159089][1159090][debug][jit,compilation] 45 com.atrekes.libhft.PureJavaHftSession$SeenNewOrderSingleClOrdIds::remember (140 bytes) made not entrant", "[1106007103332715ns][228218217ns][1159089][1159107][debug][jit,compilation] 46 com.atrekes.libhft.PureJavaHftSession$SeenNewOrderSingleClOrdIds::remember (140 bytes)", "[1106009554345680ns][2679231143ns][1159089][1159090][debug][jit,compilation] 46 com.atrekes.libhft.PureJavaHftSession$SeenNewOrderSingleClOrdIds::remember (140 bytes) made not entrant", "[1106009566555065ns][2691440554ns][1159089][1159102][debug][jit,compilation] 51 com.atrekes.libhft.PureJavaHftSession$SeenNewOrderSingleClOrdIds::remember (140 bytes)" ], "probe_lines": [ "cache_probe phase=warmup count=20000", "cache_probe phase=repeated_ids count=20000", "cache_probe marker=58 duration_ns=1643", "cache_probe marker=59 duration_ns=2432", "cache_probe marker=60 duration_ns=3193", "cache_probe marker=61 duration_ns=66190", "cache_probe marker=62 duration_ns=6135", "cache_probe marker=63 duration_ns=3046", "cache_probe marker=64 duration_ns=2748", "cache_probe marker=65 duration_ns=2675", "cache_probe marker=66 duration_ns=2828", "cache_probe marker=67 duration_ns=2790", "cache_probe marker=68 duration_ns=2820", "cache_probe class_origin=file:/usr/local/libexec/libhft-bench/java-fix/libs/libhft-java-0.1.0-SNAPSHOT.jar" ], "hashes": { "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/CacheTrap.java": "d339c2e3c8243b14cd821a8a9d0549dc287f3adb586da0f84c89a61d48da2aaa", "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/classes/CacheTrap.class": "c19e80bb0d5aaa122ef14d453556a678624c3fc4ebd16abe64bca68ce3c39009", "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/run-probe-v2.py": "083c3b27fcf89db18b27b689a52bff80c85e08710013b3fed5ff313ba1526693", "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/baseline-v2/jit.xml": "32a45dbe859bdfaf122823f5c16b508787420b8df230dc4389e175c948f18af1", "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/baseline-v2/stdout.log": "ee47697d9c8edcc2e979223a03fb9fc083727287e1f854e92162d9647c7954ca" }, "limitations": [ "MethodHandle invocation with remember excluded from inlining is not the network benchmark.", "These CPU-local durations are not latency matrix values or a continuous hardware profile." ] }, { "variant": "no-method-traps", "diagnostic_only": true, "publishable": false, "command": [ "/usr/bin/java", "-XX:-TieredCompilation", "-XX:+UnlockDiagnosticVMOptions", "-XX:+LogCompilation", "-XX:LogFile=/tmp/libhft-java-cache-trap-20260910-DkQ1ut/no-method-traps-v2/jit.xml", "-XX:CompileCommand=dontinline,com/atrekes/libhft/PureJavaHftSession$SeenNewOrderSingleClOrdIds.remember", "-Xlog:jit+compilation=debug:stdout:timenanos,uptimenanos,pid,tid,level,tags", "-XX:PerMethodTrapLimit=0", "-cp", "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/classes:/usr/local/libexec/libhft-bench/java-fix/libs/libhft-java-0.1.0-SNAPSHOT.jar", "CacheTrap" ], "installed_jar": "/usr/local/libexec/libhft-bench/java-fix/libs/libhft-java-0.1.0-SNAPSHOT.jar", "installed_jar_sha256": "e1a8b47d8eb8ff3cac84ca08e436ea93c1fafe4ff4310c11b49700ab3f5c4116", "cache_traps": [], "cache_jit_lines": [ "[1106010262690866ns][194223820ns][1159110][1159123][debug][jit,compilation] 44 com.atrekes.libhft.PureJavaHftSession$SeenNewOrderSingleClOrdIds::remember (140 bytes)" ], "probe_lines": [ "cache_probe phase=warmup count=20000", "cache_probe phase=repeated_ids count=20000", "cache_probe marker=58 duration_ns=120", "cache_probe marker=59 duration_ns=116", "cache_probe marker=60 duration_ns=91", "cache_probe marker=61 duration_ns=10099", "cache_probe marker=62 duration_ns=147", "cache_probe marker=63 duration_ns=98", "cache_probe marker=64 duration_ns=99", "cache_probe marker=65 duration_ns=104", "cache_probe marker=66 duration_ns=122", "cache_probe marker=67 duration_ns=120", "cache_probe marker=68 duration_ns=111", "cache_probe class_origin=file:/usr/local/libexec/libhft-bench/java-fix/libs/libhft-java-0.1.0-SNAPSHOT.jar" ], "hashes": { "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/CacheTrap.java": "d339c2e3c8243b14cd821a8a9d0549dc287f3adb586da0f84c89a61d48da2aaa", "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/classes/CacheTrap.class": "c19e80bb0d5aaa122ef14d453556a678624c3fc4ebd16abe64bca68ce3c39009", "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/run-probe-v2.py": "083c3b27fcf89db18b27b689a52bff80c85e08710013b3fed5ff313ba1526693", "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/no-method-traps-v2/jit.xml": "d7a44cfe7eb6ea704b4b17edaa30e85e937f05b83a28f387c2123364d5d8708f", "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/no-method-traps-v2/stdout.log": "193fe23ae12b3d2c0c6020949f05f502d382f71736b3da3ad061c421669d40dc" }, "limitations": [ "MethodHandle invocation with remember excluded from inlining is not the network benchmark.", "These CPU-local durations are not latency matrix values or a continuous hardware profile." ] } ], "installed_cache_bytecode": "Compiled from \"PureJavaHftSession.java\"\nfinal class com.atrekes.libhft.PureJavaHftSession$SeenNewOrderSingleClOrdIds {\n private static final int CAPACITY;\n\n private static final int MASK;\n\n private static final int PROBE_LIMIT;\n\n private final int[] hashes;\n\n private final int[] lengths;\n\n private final byte[] values;\n\n private int nextEvictOffset;\n\n private com.atrekes.libhft.PureJavaHftSession$SeenNewOrderSingleClOrdIds();\n Code:\n 0: aload_0\n 1: invokespecial #7 // Method java/lang/Object.\"\":()V\n 4: aload_0\n 5: sipush 4096\n 8: newarray int\n 10: putfield #10 // Field hashes:[I\n 13: aload_0\n 14: sipush 4096\n 17: newarray int\n 19: putfield #14 // Field lengths:[I\n 22: aload_0\n 23: ldc #19 // int 262144\n 25: newarray byte\n 27: putfield #20 // Field values:[B\n 30: return\n\n void clear();\n Code:\n 0: aload_0\n 1: getfield #14 // Field lengths:[I\n 4: iconst_0\n 5: invokestatic #24 // Method java/util/Arrays.fill:([II)V\n 8: aload_0\n 9: getfield #10 // Field hashes:[I\n 12: iconst_0\n 13: invokestatic #24 // Method java/util/Arrays.fill:([II)V\n 16: aload_0\n 17: iconst_0\n 18: putfield #30 // Field nextEvictOffset:I\n 21: return\n\n boolean contains(byte[], int);\n Code:\n 0: iload_2\n 1: ifle 10\n 4: iload_2\n 5: bipush 64\n 7: if_icmple 12\n 10: iconst_0\n 11: ireturn\n 12: aload_1\n 13: iload_2\n 14: invokestatic #34 // Method hash:([BI)I\n 17: istore_3\n 18: iload_3\n 19: sipush 4095\n 22: iand\n 23: istore 4\n 25: iconst_0\n 26: istore 5\n 28: iload 5\n 30: bipush 16\n 32: if_icmpge 93\n 35: iload 4\n 37: iload 5\n 39: iadd\n 40: sipush 4095\n 43: iand\n 44: istore 6\n 46: aload_0\n 47: getfield #14 // Field lengths:[I\n 50: iload 6\n 52: iaload\n 53: iload_2\n 54: if_icmpne 87\n 57: aload_0\n 58: getfield #10 // Field hashes:[I\n 61: iload 6\n 63: iaload\n 64: iload_3\n 65: if_icmpne 87\n 68: aload_0\n 69: getfield #20 // Field values:[B\n 72: iload 6\n 74: bipush 64\n 76: imul\n 77: aload_1\n 78: iload_2\n 79: invokestatic #38 // Method bytesEqual:([BI[BI)Z\n 82: ifeq 87\n 85: iconst_1\n 86: ireturn\n 87: iinc 5, 1\n 90: goto 28\n 93: iconst_0\n 94: ireturn\n\n void remember(byte[], int);\n Code:\n 0: iload_2\n 1: ifle 10\n 4: iload_2\n 5: bipush 64\n 7: if_icmple 11\n 10: return\n 11: aload_1\n 12: iload_2\n 13: invokestatic #34 // Method hash:([BI)I\n 16: istore_3\n 17: iload_3\n 18: sipush 4095\n 21: iand\n 22: istore 4\n 24: iconst_m1\n 25: istore 5\n 27: iconst_0\n 28: istore 6\n 30: iload 6\n 32: bipush 16\n 34: if_icmpge 116\n 37: iload 4\n 39: iload 6\n 41: iadd\n 42: sipush 4095\n 45: iand\n 46: istore 7\n 48: aload_0\n 49: getfield #14 // Field lengths:[I\n 52: iload 7\n 54: iaload\n 55: ifne 70\n 58: iload 5\n 60: ifge 70\n 63: iload 7\n 65: istore 5\n 67: goto 110\n 70: aload_0\n 71: getfield #14 // Field lengths:[I\n 74: iload 7\n 76: iaload\n 77: iload_2\n 78: if_icmpne 110\n 81: aload_0\n 82: getfield #10 // Field hashes:[I\n 85: iload 7\n 87: iaload\n 88: iload_3\n 89: if_icmpne 110\n 92: aload_0\n 93: getfield #20 // Field values:[B\n 96: iload 7\n 98: bipush 64\n 100: imul\n 101: aload_1\n 102: iload_2\n 103: invokestatic #38 // Method bytesEqual:([BI[BI)Z\n 106: ifeq 110\n 109: return\n 110: iinc 6, 1\n 113: goto 30\n 116: aload_0\n 117: iload 5\n 119: iflt 127\n 122: iload 5\n 124: goto 133\n 127: aload_0\n 128: iload 4\n 130: invokespecial #42 // Method nextEvictionSlot:(I)I\n 133: aload_1\n 134: iload_2\n 135: iload_3\n 136: invokespecial #46 // Method store:(I[BII)V\n 139: return\n\n private int nextEvictionSlot(int);\n Code:\n 0: iload_1\n 1: aload_0\n 2: getfield #30 // Field nextEvictOffset:I\n 5: iadd\n 6: sipush 4095\n 9: iand\n 10: istore_2\n 11: aload_0\n 12: aload_0\n 13: getfield #30 // Field nextEvictOffset:I\n 16: iconst_1\n 17: iadd\n 18: bipush 15\n 20: iand\n 21: putfield #30 // Field nextEvictOffset:I\n 24: iload_2\n 25: ireturn\n\n private void store(int, byte[], int, int);\n Code:\n 0: aload_2\n 1: iconst_0\n 2: aload_0\n 3: getfield #20 // Field values:[B\n 6: iload_1\n 7: bipush 64\n 9: imul\n 10: iload_3\n 11: invokestatic #50 // Method java/lang/System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V\n 14: aload_0\n 15: getfield #10 // Field hashes:[I\n 18: iload_1\n 19: iload 4\n 21: iastore\n 22: aload_0\n 23: getfield #14 // Field lengths:[I\n 26: iload_1\n 27: iload_3\n 28: iastore\n 29: return\n\n private static int hash(byte[], int);\n Code:\n 0: ldc #56 // int -2128831035\n 2: istore_2\n 3: iconst_0\n 4: istore_3\n 5: iload_3\n 6: iload_1\n 7: if_icmpge 31\n 10: iload_2\n 11: aload_0\n 12: iload_3\n 13: baload\n 14: sipush 255\n 17: iand\n 18: ixor\n 19: istore_2\n 20: iload_2\n 21: ldc #57 // int 16777619\n 23: imul\n 24: istore_2\n 25: iinc 3, 1\n 28: goto 5\n 31: iload_2\n 32: ireturn\n\n private static boolean bytesEqual(byte[], int, byte[], int);\n Code:\n 0: iconst_0\n 1: istore 4\n 3: iload 4\n 5: iload_3\n 6: if_icmpge 30\n 9: aload_0\n 10: iload_1\n 11: iload 4\n 13: iadd\n 14: baload\n 15: aload_2\n 16: iload 4\n 18: baload\n 19: if_icmpeq 24\n 22: iconst_0\n 23: ireturn\n 24: iinc 4, 1\n 27: goto 3\n 30: iconst_1\n 31: ireturn\n\n com.atrekes.libhft.PureJavaHftSession$SeenNewOrderSingleClOrdIds(com.atrekes.libhft.PureJavaHftSession$1);\n Code:\n 0: aload_0\n 1: invokespecial #3 // Method \"\":()V\n 4: return\n}\n", "bytecode_sha256": "a59b16b37c8f10919ab8b23222e66286817141edb46e6460cc0364368fe12697", "initial_attempts": { "diagnostic_only": true, "publishable": false, "cases": [ { "variant": "baseline", "status": "invalid planned control", "issues": [ "dontinline used an invalid dotted class/method pattern; JVM printed an error but exited zero.", "Initial parser looked above the tty element and falsely returned no runtime traps." ], "corrected_retained_runtime_cache_traps": [ { "thread": "1158503", "reason": "unstable_if", "action": "reinterpret", "debug_id": "0", "compile_id": "45", "compiler": "c2", "stamp": "0.216", "frames": [ { "bci": "119", "method": "com.atrekes.libhft.PureJavaHftSession$SeenNewOrderSingleClOrdIds remember ([BI)V", "bytes": "140", "count": "1605", "backedge_count": "25680", "iicount": "1605" } ] }, { "thread": "1158503", "reason": "unstable_if", "action": "reinterpret", "debug_id": "0", "compile_id": "46", "compiler": "c2", "count": "1", "stamp": "2.679", "frames": [ { "bci": "89", "method": "com.atrekes.libhft.PureJavaHftSession$SeenNewOrderSingleClOrdIds remember ([BI)V", "bytes": "140", "count": "2719", "backedge_count": "43504", "iicount": "2719", "decompiles": "1", "unstable_if_traps": "1" } ] } ], "hashes": { "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/baseline/jit.xml": "1b1cf50ac8c294176ff3c866c197807d6480335f13e3da9b4fef0ba0c9a7bb6f", "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/baseline/stdout.log": "22b57091413c9554d44fd71b1337b3e9634a543fef327b39bb5adf9e882824bf", "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/baseline/review.json": "0e762528fb1d522956c112b8dbb2e82959a1d268a8e8aa6541ab512a3cfe7a9b" } }, { "variant": "no-method-traps", "status": "invalid planned control", "issues": [ "dontinline used an invalid dotted class/method pattern; JVM printed an error but exited zero.", "Initial parser looked above the tty element and falsely returned no runtime traps." ], "corrected_retained_runtime_cache_traps": [], "hashes": { "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/no-method-traps/jit.xml": "f4911195b4d4b91f9e3d9b80633298171a3f4a603e6d1af27d873e180f066c02", "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/no-method-traps/stdout.log": "83164b98b7838c78186642554f9457c8e422afcb82c30ae6d7400dc29307590a", "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/no-method-traps/review.json": "9daa737ea342760432388940123a7b9d752d6c6f67d0028c2088414d902f5fb8" } } ] }, "interpretation": { "duplicate_probe": "unstable_if at bci89 tests cached hash equality before bytesEqual", "initial_fill": "unstable_if at bci119 switches from an empty slot to local eviction", "policy_control": "PerMethodTrapLimit=0 produces no runtime uncommon-trap record for this cache in this CPU control" }, "limitations": [ "MethodHandle invocation and explicit dontinline are CPU-probe-only; no hardware latency is certified.", "These logs identify exact trap bytecodes for this replay, not retroactive trap records for earlier network runs.", "The zero trap-limit flag changes JVM speculation policy, not the workload or Java correctness checks.", "Initial rejected directives and incorrect first XML extraction are retained, not treated as valid controls." ], "hashes": { "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/cpu-review.py": "96747c881019891553c54404a17eb687bec25e9f172ec301f0e3d27b9eceae84", "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/initial-probe-review.json": "8290480f635096b5583c52b3dac072075111d4b329ec17585b71419df86190a0", "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/baseline-v2/review.json": "66484b59bd1f659f994855aae1dabac2788850fb2005d002afa6a208335a6dd8", "/tmp/libhft-java-cache-trap-20260910-DkQ1ut/no-method-traps-v2/review.json": "df8bff27073ee94bcfc8fe77ae4ca285d4569acaf553baedb7f463629d1ebc8b" } }