profiling

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Where to learn about low-level, hard-core performance stuffs?

This is actually a 2 part question: For people who want to squeeze every clock cycle, people talk about pipelines, cache locality, et开发者_开发百科c.[详细]

2023-04-01 18:44 分类：问答
Tool to find columns in a database approaching limit?

Can anyone point me to a tool, script, method, query, etc. that will help me find all columns in a database that have valu开发者_开发技巧es approaching the size limit of the column?[详细]

2023-04-01 08:30 分类：问答
Is there an IBM Iseries/DB2 equivalent to SQL Profiler?

Subject says i开发者_StackOverflow中文版t all. Looking to capture sql submitted to DB2.Take a look at the Iseries SQL Exit Points which will allow you to log any submitted SQL.The only problem is you[详细]

2023-04-01 05:33 分类：问答
View gprof output in kcachegrind

How to view output of gprof in kcachegrind? Is here a converter from gcc\'s gmon.out in开发者_开发技巧to callgrind.out?Currently, this seems not to be supported. It is mentioned on Kcachegrind\'s whis[详细]

2023-04-01 03:08 分类：问答
Digging into R profiling information

I am trying to optimize a bit of code, and am puzzled about information from summaryRprof().In particular, it looks like a number of calls are made to external C programs, but I\'m not able to pin dow[详细]

2023-04-01 02:46 分类：问答
MSVC2005 std::_Iterator_base:: functions slow while debugging

I\'m profiling debug build c++ code in MSVC 2005 and certain code takes an extremely long time to execute (30+ seconds) compared to (1-2 seconds) in release.[详细]

2023-04-01 02:38 分类：问答
Best way to regress runtime related degradation in C Code

i want to see if there is a elegant way to create a mechanism which can track if the runtime of a function have degraded for a particular test release over release.[详细]

2023-03-31 18:18 分类：问答
An infinite loop somewhere in my code

I have this Java game server that handles up to 3,000 tcp connections, each player, or each tcp connection has its own thread, each thread goes something like this:[详细]

2023-03-31 17:59 分类：问答
Please help me understand these Clojure Hprof traces

I have some Clojure code that is simulating and then processing numerical data.The data are basically vectors of double values; the processing mainly involves summing their values in various ways.I wi[详细]

2023-03-31 14:08 分类：问答
Does filtering classes for cpu profiling work in Java VisualVM?

I want to filter what classes are being cpu-profiledin Java VisualVm (Version 1.7.0 b110325). For this, I tried under Profiler -> Settings -> CPU-Settings to set \"Profile only classes\" to my package[详细]

2023-03-31 04:39 分类：问答