amirhadadi
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| { | |
| "allOf": [ | |
| { | |
| "type": "object", | |
| "properties": { | |
| "cancelRetriesOnTimeout": { | |
| "type": "boolean" | |
| }, | |
| "connectionName": { | |
| "type": "string" |
amirhadadi
/ StringBenchmark
Last active
December 21, 2021 16:59
String benchmark comparing safe and unsafe accesses
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| package org.sample; | |
| import org.openjdk.jmh.annotations.Benchmark; | |
| import org.openjdk.jmh.annotations.BenchmarkMode; | |
| import org.openjdk.jmh.annotations.Fork; | |
| import org.openjdk.jmh.annotations.Mode; | |
| import org.openjdk.jmh.annotations.OutputTimeUnit; | |
| import sun.misc.Unsafe; | |
| import java.lang.reflect.Field; |
amirhadadi
/ gist:6e4580c7e91887e53f0993d30e619674
Created
July 29, 2020 22:30
Fix SemanticFolsomMetricsTest::testRegisterOutstandingRequestsGauge
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| @Test | |
| public void testRegisterOutstandingRequestsGauge() { | |
| metrics.registerOutstandingRequestsGauge(new OutstandingRequestsGauge() { | |
| @Override | |
| public int getOutstandingRequests() { | |
| return 6; | |
| } | |
| @Override | |
| public String getHostName() { |
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| pause time in millis | % of pauses | |
|---|---|---|
| 0-50 | 15.6% | |
| 50-100 | 9.52% | |
| 100-150 | 21.55% | |
| 150-200 | 34.9% | |
| 200-250 | 15.23% | |
| 250-300 | 2.82% | |
| 300-350 | 0.31% | |
| 350-400 | 0.06% |
amirhadadi
/ gist:31cf546c063fa351feefb918ba0ba8ed
Created
March 18, 2019 07:14
zgc Java 11 stack walking after 5 days
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| Started [cpu] profiling | |
| --- Execution profile --- | |
| Total samples: 34192 | |
| Non-Java: 649 (1.90%) | |
| Unknown (native): 114 (0.33%) | |
| Not walkable (native): 5 (0.01%) | |
| Unknown (Java): 118 (0.35%) | |
| Not walkable (Java): 115 (0.34%) | |
| Deopt: 193 (0.56%) |
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| --- 40079459 ns (0.07%), 4 samples | |
| [ 0] StackWalk::walk(Handle, long, int, int, int, objArrayHandle, Thread*) | |
| [ 1] JVM_CallStackWalk | |
| [ 2] java.lang.StackStreamFactory$AbstractStackWalker.callStackWalk | |
| [ 3] java.lang.StackStreamFactory$AbstractStackWalker.beginStackWalk | |
| [ 4] java.lang.StackStreamFactory$AbstractStackWalker.walk | |
| [ 5] java.lang.StackWalker.walk | |
| [ 6] org.apache.logging.log4j.util.StackLocator.getCallerClass | |
| [ 7] org.apache.logging.log4j.util.StackLocatorUtil.getCallerClass | |
| [ 8] org.apache.logging.log4j.jcl.LogAdapter.getContext |
amirhadadi
/ gist:48b6f84e3b2412124e817a50608e6ddd
Created
March 17, 2019 14:26
stack walk with zgc after 4 days
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| --- 1572022745 ns (2.64%), 157 samples | |
| [ 0] AccessInternal::PostRuntimeDispatch<ZBarrierSet::AccessBarrier<1187924ul, ZBarrierSet>, (AccessInternal::BarrierType)2, 1187924ul>::oop_access_barrier(void*) | |
| [ 1] ResolvedMethodTable::lookup(int, unsigned int, Method*) | |
| [ 2] java_lang_invoke_ResolvedMethodName::find_resolved_method(methodHandle const&, Thread*) | |
| [ 3] CallInfo::CallInfo(Method*, Klass*, Thread*) | |
| [ 4] java_lang_StackFrameInfo::set_method_and_bci(Handle, methodHandle const&, int, Thread*) | |
| [ 5] JavaFrameStream::fill_frame(int, objArrayHandle, methodHandle const&, Thread*) | |
| [ 6] StackWalk::fill_in_frames(long, BaseFrameStream&, int, int, objArrayHandle, int&, Thread*) | |
| [ 7] StackWalk::fetchNextBatch(Handle, long, long, int, int, objArrayHandle, Thread*) | |
| [ 8] JVM_MoreStackWalk |
amirhadadi
/ gist:0c43b087b9bfd995119a97cbf3557d21
Created
March 17, 2019 14:24
stack walk with zgc 10 minutes after restart
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| --- 60109469 ns (0.07%), 6 samples | |
| [ 0] ResolvedMethodTable::lookup(int, unsigned int, Method*) | |
| [ 1] java_lang_invoke_ResolvedMethodName::find_resolved_method(methodHandle const&, Thread*) | |
| [ 2] CallInfo::CallInfo(Method*, Klass*, Thread*) | |
| [ 3] java_lang_StackFrameInfo::set_method_and_bci(Handle, methodHandle const&, int, Thread*) | |
| [ 4] StackWalk::walk(Handle, long, int, int, int, objArrayHandle, Thread*) | |
| [ 5] JVM_CallStackWalk | |
| [ 6] java.lang.StackStreamFactory$AbstractStackWalker.callStackWalk | |
| [ 7] java.lang.StackStreamFactory$AbstractStackWalker.beginStackWalk | |
| [ 8] java.lang.StackStreamFactory$AbstractStackWalker.walk |
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| CREATE OR REPLACE FORCE VIEW V_RESTORABLE_TABLES AS | |
| SELECT table_name tbl from user_tables WHERE | |
| table_name not like 'FRESH%' | |
| AND temporary = 'N' | |
| AND table_name NOT IN ('SNAPSHOT_DATA','SNAPSHOT_TABLE_GROUPS','TABLES_META_DATA') | |
| minus | |
| (select log_table from user_mview_logs) | |
| minus | |
| (select object_name from user_objects where object_type='MATERIALIZED VIEW'); |