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Iain Ross

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Recent posts by Iain Ross

From:

http://bernardstudios.com/archive/2004/10/06/361.aspx

> One of the most common, but unfortunate misuse of terminology
>is treating "load testing" and "stress testing" as synonymous. The
>consequence of this ignorant semantic abuse is usually that the system
>is neither properly "load tested" nor subjected to a meaningful stress
>test.
>
>1. Stress testing is subjecting a system to an unreasonable load
>while denying it the resources (e.g., RAM, disc, mips, interrupts,
>etc.) needed to process that load. The idea is to stress a system to
>the breaking point in order to find bugs that will make that break
>potentially harmful. The system is not expected to process the
>overload without adequate resources, but to behave (e.g., fail) in a
>decent manner (e.g., not corrupting or losing data). Bugs and failure
>modes discovered under stress testing may or may not be repaired
>depending on the application, the failure mode, consequences, etc.
>The load (incoming transaction stream) in stress testing is often
>deliberately distorted so as to force the system into resource
>depletion.
>
>2. Load testing is subjecting a system to a statistically
>representative (usually) load. The two main reasons for using such
>loads is in support of software reliability testing and in
>performance testing. The term "load testing" by itself is too vague
>and imprecise to warrant use. For example, do you mean representative
>load," "overload," "high load," etc. In performance testing, load is
>varied from a minimum (zero) to the maximum level the system can
>sustain without running out of resources or having, transactions
>suffer (application-specific) excessive delay.
>
>3. A third use of the term is as a test whose objective is to
>determine the maximum sustainable load the system can handle.
>In this usage, "load testing" is merely testing at the highest
>transaction arrival rate in performance testing.
16 years ago
Here's a bit of fuel for the fire!

I have read through the previously pointed out thread and in one post it states that:

United Kingdom of Great Britain and Northern Ireland: Elizabeth II, Dei Gratia Britanniarum Regnorumque Suorum Ceterorum Regina, Consortionis Populorum Princeps, Fidei Defensor. (Latin, Elizabeth the Second, by the Grace of God, of the United Kingdom of Great Britain and Northern Ireland and of Her other Realms and Territories Queen, Head of the Commonwealth, Defender of the Faith.)

Now as a Scot there is one point that really rankles here:
Elizabeth II - How can this be as there has never been an Elizabeth I? Ok there has been Elizabeth I of ENGLAND but this the UK (ie post 1707) we are supposed to be talking about!! See should either call herself Elizabeth I & II (as in James I and VI) or Elizabeth I of the United Kingdom of Great Britain etc..

Having said that I peronally think we should get rid of them anyway. This is the 21st century and I think I should have the right to choose the head of state and not have somebody selected for me just because of some claim of birthright. These poeple and their multitude of hangers on should be forced to go and earn their way in the world instead of living of the fat of the land. Anyway enough of the republican rant!

Cheers,
Iain
17 years ago
Many thanks to all who have taken time to reply. I now have plenty of information to make a start with my planning. Cheers.
-Iain
17 years ago
Ideally 3-4 weeks but this will depend upon my work commitments at the end of the year.
17 years ago
Apologies for the lack specific details in my earlier post. I am interested in learning about your country and its peoples so a bit of culture would be good. I like the outdoors so places with activites (walking etc) would be of interest. I am not a great one for beaches but my better half is so some advice on the front would also be welcome. I appreciate any comments you guys can give.
17 years ago
Hey can any of you recommend somewhere to take a holiday in India?
17 years ago
I might be wrong but ...
E is correct as threading is system dependent and so any output is also system dependent.
D is correct as there is a possibility of deadlock in the code (Again this would depend upon thread implementation). Consider the following scenario. The first thread locks s1 and performs an append. It then tries to obtain a lock to s2. If at this point the other thread has already locked s2 it can't have the lock so will wait. It will also be the case that s2 will try to lock s1 but this will also be locked and so it will also wait and hence a deadlock occurs. Note a thread can hold more than one lock at a time and synchronized statements can be nested (Dan Chisholm Exam - Dec20/Section7/Exam1/Question9).
-Iain
Byte b = new Byte(10);
In this case I believe the 10 passed as a parameter is considered to be a literal, as such it is implicitly of type int (32 bit). The wrapper class Byte does not have a constructor that accepts an int and so you get a compiler error.
Iain