Maximum number of threads can be created in solari

Dear All,
This is Amarnath.E, I'm working on high-end server program. As per my requirement i have to create many threads in my program.
1.Is there any limitation in solaris on creating the no. of threads?
2. If so how to increase the no. of threads that can be created?
3.Whether the No. of Threads can be created can vary based on the system configuration?
Please
ThanX in advance
Amarnath.E

Hello there,
I believe the previous answer is given correctly. There is no specific
kernel limit to be set. You will eventually run out of virtual address space
(after about ~3000 threads). Out of 4 GB virtual address space, kernel
base address (ie., F0000000) and beyond is reserved for kernel (except
for Ultra boxes where you can practically get almost 4GB each for
kernel and process's virtual address spaces). Thus you have about
3.75GB Sparc (3.5GB on X86 where the kernel base is E000000). It is
not recommended to reduce the thread stack size (just be sure your new
stack size will be able to handle the stack growth it needs per thread)
but, if you are sure it is safe for your purpose, this can be done as an
argument to a thread creation. Please see also manpage on thr_create.
hope this helps.
hae
Sun Developer Technical Support

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You might try to use the new java.util.concurrent.* api available in j2se
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"Staffan Larsen" <[email protected]> wrote in message
news:40f63c6b$1@mktnews1...
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structures) and that is why you can run fewer threads with a larger
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>>>
I don't think it is realistic to run 100's of thousands of threads in
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Kevin Healy wrote:
I have an application for which I am interested in obtaining as manysimultaneous
threads as possble (e.g. 10's and possibly 100's of thousands of
threads).
>>>>
More specifically I have developed a simulation language formalismin which the
dynamics of each "entity" moving through a network of queues is
coordinated
>>>
by
a separate thread of execution.
This is not a traditional application where all or even some smallnumber are
intended to run concurrently. A single executive thread is responsiblefor alternately
activating and deactivating individual threads to reflect the timeordered sequencing
of events corresponding to each entity's movement through the systemof queues.
As a result, only a single thread is executing at one time.
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execution context to the JVM. The resource contention issues thatarise in a
standard multi-threaded application don't apply here.
For "large" systems though (ones populated by many entities
simultaneously)
>>>
I
need many threads.
I'm using JRockit's thin thread model on a Windows XP machine and am"only" able
to get approximately 25000 threads at which point the JVM hangs withno diagnostic.
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Surprisingly, by altering the heap size upward from 256MB to 512MBacutally causes
the VM to hang with fewer threads (only 20000 or so)
Using allicationtype:global and altering the stack size of the threadsseems to
have little effect on the maximum number attainable.
It seems the maximum number of threads attaible should be a functionof the size
of the heap space, and the amount of physical and virtual memory limitson the
system.
My empirical evidence, however, seems to indicate there is some
internal
>>>
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Maximum number of threads can be created in solari

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