代理國外軟體

12月銷售軟體排行

1. MindManager 視覺化思考繪圖軟體
2. EViews 預測分析計量軟體
3. LISREL 線性結構分析軟體

4.

ATLAS.ti 定性量化分析軟體
5.

EndNote 參考書目軟體

6.

Stata 資料管理統計繪圖軟體

7. See5/C5.0  資料探勘軟體
8. HLM 階層分析軟體
9.

Expert Choice  AHP專家決策分析軟體

10. Grapher 3D科學繪圖軟體

 

 

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JProfiler Java程式開發工具

JProfiler是一個全功能的Java剖析工具(profiler),專用於分析J2SE和J2EE應用程式。它把CPU、執行緒和記憶體的剖析組合在一個強大的應用中。JProfiler可提供許多IDE整合和應用伺服器整合用途。JProfiler直覺式的GUI讓你可以找到效能瓶頸、抓出記憶體漏失(memory leaks)、並解決執行緒的問題。它讓你得以對heap walker作資源回收器的root analysis,可以輕易找出記憶體漏失;heap快照(snapshot)模式讓未被參照(reference)的物件、稍微被參照的物件、或在終結(finalization)佇列的物件都會被移除;整合精靈以便剖析瀏覽器的Java外掛功能。

Memory profiling
JProfiler's memory view section offers dynamically updated views on memory usage and allocations. All views can show live and garbage collected objects.

Class monitor  Shows classes and their instances. You can mark current values and show differences.

Allocation monitor  Shows a call tree with annotated allocations of selected classes.

Allocation hot spots  Shows a list of methods that allocate selected classes. You can mark current values and show differences. The tree of backtraces can be shown for each hot spot.

Memory statistics  Shows package statistics of objects and allocations.

Heap walker
In JProfiler's heap walker you can take a snapshot of the heap and drill down to objects of interest by performing selection steps. The heap walker has four views:

Classes  Shows all classes and their instances.

Allocations  Shows allocation tree and allocation hot spots.

References  Shows a graph of references for individual objects and offers a "show path to garbage collector root" functionality. Also offers cumulated views for incoming and outgoing references.

Data  Shows instance and class data for individual objects.

CPU profiling
JProfiler offers various ways to record the call tree to optimize for performance or detail. The thread or thread group as well as the thread status can be chosen for all views. The CPU view section contains:

Invocation tree  Shows a cumulated top-down tree of all recorded call sequences in the JVM.

Hot spots  Shows the list of the most time consuming methods. The tree of backtraces can be shown for each hot spot.

Method graph  Shows a graph of call sequences starting from selected methods.

CPU statistics  Shows package, class and method statistics.

Thread profiling
For thread profiling, JProfiler offers the following views:

Thread history  Shows a timeline with thread activity and thread status.

Thread monitor  Shows a list of all live threads with their current activity.

Deadlock detection graph  Shows a graph of all deadlocks in the JVM.

Current monitor usage  Shows the currently used monitors and their associated threads.

Monitor usage history  Shows the history of significant waiting and blocking events.

Monitor usage statistics  Shows statistics for monitors grouped by monitors, threads and classes of monitors.

border="0" width="32" height="32"> VM telemetry
To observe the internal state of your JVM, JProfiler offers various telemetry views:

Heap  Shows a timeline with a graph of the used heap and the heap size.

Objects  Shows a timeline with a graph of live objects and arrays.

Garbage collector  Shows a timeline with a graph of garbage collector activity.

Classes  Shows a timeline with a graph of loaded classes.

Threads  Shows a timeline with a graph of active threads.

 

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