Accurately Calculating the time a Thread takes to run

How do I accurately gain timings for a thread? I have a number of threads which are calling CalculatorEngine which locks on an object starts a timer (ctime = System.currentTimeMillis();) and then logs the time just before the thread exits
System.out.println("Calculations for " + setName + " for " + calcsMadeByCalcEnginge + " positions took: " + (System.currentTimeMillis() - ctime));
But if there is a context swich my timer will continue to run until the thread is reactivated and then completes... How can I gain the actual timings for how long the thread took?

How do I accurately gain timings for a thread? You can't.
>
But if there is a context swich my timer will
continue to run until the thread is reactivated and
then completes... Correct.
How can I gain the actual timings
for how long the thread took?You can't. As I said and as you already pointed out why.
Not to mention that on modern OSes threads in other apps might steal time as well.
You can just run it in a loop, make sure no other resource hungry apps are running and then estimate the time taken.

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Dear All,
We are using the Tax Procedure TAXINN.
When we create a LIV document with ref to a PO using the transaction MIRO & when I check the calculate tax button, the tax amount which is displayed in the Basic data is more than the amount which is displayed in the taxes tab.
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Awaiting helpful replies.
Regards,
Edited by: SAP FC on Dec 5, 2008 3:44 PM

Hi All,
Please note that when I removed the VAT condition type JVRD from the Classify condition types settings in IMG then the VAT amount which is calculated in the Basic data tab of MIRO is equal to the actual Tax amount as in PO (Excise + VAT ), but the amount which is displayed in the tax tab of MIRO is less.
Now if I maintain the Classify condition types settings in IMG for my VAT condtn type JVRD then the VAT amount which is calculated in basic data is more than both the PO as well as tax tab in MIRO.
Please note as you all have suggested I tried this after creating a new material & with the newly maintained condition records in FV11.
But still the issue persists..
If anyone have any idea. plz revert.
Regards,
Edited by: SAP FC on Dec 9, 2008 10:23 AM

Thread CPU time: does it include the time while thread is waiting

Hi,
My question is regarding the getCurrentThreadCpuTime() supported by the ThreadMXBean.
I wonder if the returned time includes the time while the thread is waiting, i.e. after the thread calls wait() and before getting a notify() or a notifyAll().
Thanks,
Nuha

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Hello,
I have two threads running in the same execution system on a real-time PXI platform. The time-critical thread sleeps using "AI Single Scan.VI", and acquires my data at a rate of 8000 Hz.
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878279 wrote:
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Accurately Calculating the time a Thread takes to run

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