java.lang.UnsatisfiedLinkError

[ilya]

Exception in thread "Thread-9" java.lang.UnsatisfiedLinkError:
org.hyperic.sigar .Mem.gather(Lorg/hyperic/sigar/SigarV
at org.hyperic.sigar.Mem.gather(Native Method)
at org.hyperic.sigar.Mem.fetch(Mem.java:30)
at org.hyperic.sigar.Sigar.getMem(Sigar.java:306)

What can be the reason of such type of the error?

 

[John B. Matthews]

Exception in thread "Thread-9" java.lang.UnsatisfiedLinkError:
org.hyperic.sigar .Mem.gather(Lorg/hyperic/sigar/SigarV
at org.hyperic.sigar.Mem.gather(Native Method)
at org.hyperic.sigar.Mem.fetch(Mem.java:30)
at org.hyperic.sigar.Sigar.getMem(Sigar.java:306)

What can be the reason of such type of the error?

java.lang.UnsatisfiedLinkError: "Thrown if the Java Virtual Machine
cannot find an appropriate native-language definition of a method
declared native."

<http://download.oracle.com/javase/6/docs/api/java/lang/UnsatisfiedLinkEr
ror.html>

Possibly, your SIGAR (System Information Gatherer And Reporter) can't
find the binary required for your platform:

<http://support.hyperic.com/display/SIGAR/Home>

 

[Roedy Green]

.UnsatisfiedLinkError:

see
http://mindprod.com/jgloss/runerrormessages.html#UNSATISFIEDLINKERROR
--
Roedy Green Canadian Mind Products
http://mindprod.com
A short order cook is a master of multitasking. Every movement is
optimised from years of practice. Yet when a computer executes a
multitasking program, it approaches the task as if for the first time.

 

[Lew]

Roedy Green wrote in his sig:

Roedy Green Canadian Mind Products http://mindprod.com
A short order cook is a master of multitasking. Every movement is
optimised from years of practice. Yet when a computer executes a
multitasking program, it approaches the task as if for the first time.

Interesting, if incorrect, observation. It's not always true - some
programs persist state between invocations, so they do not approach
all aspects of a task as if for the first time. Programs evolve -
features are added, bugs patched, architecture optimized - so after
years of practice every instruction of the program is optimized.
Whether the program is multitasking is not germane - programs are
optimized or not for non-multitasked programs as for multitasked ones.

Taking "as if for the first time" a different way - each program is
sung for the first time the same way a hit record is - no matter how
many times you execute that MP3 it sounds exactly like the other times
because it's the exact same recipe. In that regard the observation is
trivial - of course a computer executes each program as if for the
first time because it is not sentient, and therefore has no memory or
consciousness for "another time" to have meaning.

 

[Roedy Green]

Interesting, if incorrect, observation

The computer run time executes a program as if it had never done it
before. It could each time it ran note for example just how big
StringBuffers really have to be, the optimum buffer size, which memory
allocation scheme is most efficient, etc.

If you declared "tweakables" then it could even do things like select
the best algorithm given the size of the input set, or decide on the
optimum number of processing threads.

see http://mindprod.com/jgloss/tweakable.html
http://mindprod.com/project/tweakable.html
--
Roedy Green Canadian Mind Products
http://mindprod.com
A short order cook is a master of multitasking. Every movement is
optimised from years of practice. Yet when a computer executes a
multitasking program, it approaches the task as if for the first time.

 

[Lew]

The computer run time executes a program as if it had never done it
before. It could each time it ran note for example just how big
StringBuffers really have to be, the optimum buffer size, which memory
allocation scheme is most efficient, etc.

If you declared "tweakables" then it could even do things like select
the best algorithm given the size of the input set, or decide on the
optimum number of processing threads.

see http://mindprod.com/jgloss/tweakable.html
http://mindprod.com/project/tweakable.html

Ah, I see. I was looking at a different aspect of what a program's "first
time" might mean. In the context you describe the observation makes sense,
even points the way for technological advancement.