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Top Forums UNIX for Advanced & Expert Users unable to allocate enough memory Post 302190737 by rein on Wednesday 30th of April 2008 11:15:34 AM

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04-30-2008

Registered User

unable to allocate enough memory

On SunOS 5.8 I get an error when starting a large Java process with over 2Gb memory.

Code:

Error occurred during initialization of VM
Could not reserve enough space for object heap

When stopping several other Java processes we can start this process. This seems to indicate that we don't have enough consecutive memory blocks available.

top reports the following:

Code:

load averages:  0.81,  0.91,  1.26                                   17:03:16
284 processes: 283 sleeping, 1 on cpu
CPU states: 90.4% idle,  6.0% user,  2.4% kernel,  1.1% iowait,  0.0% swap
Memory: 32G real, 11G free, 28G swap in use, 2491M swap free

Thus even though we have 11Gb out of 32Gb free on our 6CPU system we can't allocate enough memory.

uptime reports:

Code:

5:13pm  up 237 day(s), 9 min(s),  19 users,  load average: 0.93, 1.16, 1.27

Is it possible that the memory is too fragmented? How can we tell? or how can we fix this?

rein

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install-solaris

install-solaris(1M)													       install-solaris(1M)

NAME

       install-solaris - install the Solaris operating system

SYNOPSIS

       install-solaris

       install-solaris	invokes  the  Solaris  Install	program. Depending on graphical capability and available memory at the time of invocation,
       install-solaris invokes either a text-based installer or a graphical installer.

       The following minimum requirements for physical memory dictate which features are available during installation:

       For SPARC machines:

       128 MB

	   Minimum physical memory for all installation types

       128 MB

	   Minimum physical memory required for windowing system

       384 MB

	   Minimum physical memory required for graphical-based installation

       For x86 machines:

       256 MB

	   Minimum physical memory for all installation types

       256 MB

	   Minimum physical memory required for windowing system

       512 MB

	   Minimum physical memory required for graphical-based installation

       In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number  of  fea-
       tures available.

       install-solaris	exists	only  on  the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the  for more
       details.

       install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the
       installation media. Refer to the  for disk space requirements.

       Refer to the  for more information on the various menus and selections.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcdrom  (Solaris instal-  |
       |			     |lation media)		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

       pkginfo(1), install(1M), pkgadd(1M), attributes(5)

       It is advisable to exit install-solaris by means of the exit options in the install-solaris menus.

								    23 Sep 2005 					       install-solaris(1M)