It is an extension of memory address space which is logically appended to the physical memory of a computer by the Memory Management Unit (MMU) of its processor. It is normally realized in operating systems by utilizing free disk space to implement such memory extension and may also be referred to ...

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602 views

Cherokee high virtual memory usage even after disabling I/O Cache

I've Ubuntu 10.04LTS 64-bit running on a openvz container and Cherokee 1.0.8 compiled from source. The virtual memory usage of cherokee-worker is around 430 MB even after disabling I/O cache from ...
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1answer
42 views

What is System Code Total Bytes

I am trying to use perfmon, and according to MSDN, the "System Code Total Bytes" counter ... Shows the size, in bytes, of pageable operating system code currently in virtual memory. It is a ...
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1answer
945 views

How to tune system settings for mongoDB on Linux?

Trying to squeeze a lot out of one question here -- please bear with me. Although the MongoDB man pages make several useful recommendations about system settings like ulimit ...
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1answer
77 views

How to interpret increasing SHR reported by top?

The man page for top defines SHR as: t: SHR -- Shared Mem size (kb) The amount of shared memory used by a task. It simply reflects memory that could be potentially shared with other ...
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1answer
247 views

Proxmox - Assign more memory to KVM VM

Is it possible to assign more memory to a KVM virtual machine without restarting it? I changed the memory size of a VM using the Proxmox web interface, but can't see that increase in the guest.
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1answer
113 views

How to Examine Virtual Memory Fragmentation on Windows 2000?

Is there a method to examine the virtual address space of a specific process to examine if that process is under going virtual memory fragmentation? I know it sounds like something I shouldn't be ...
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1answer
258 views

OOMKiller causing machine hosting Java to become unresponsive

I have two servers running in a private vSphere cloud, both running JBoss and Tomcat. Machine 8 - RHEL5.3, 3 gigs of 'physical' memory, 1 gig of swap Machine 25 - RHEL4.6, 2 gigs of 'physical' ...
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1answer
536 views

Memory per user on AIX

nmon is showing me 99% memory usage and swap activity. My user is not very active at the moment so it should be someone elses fault. Is there a way I figure how much memory each user is taking? Must ...
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118 views

virtual memory commited

After a server bounce happens, and after around 40-45 days time period, we receive continuous “Committed Virtual Memory” alerts which indicates the usage of swap space in the magnitude of >4GB This ...
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34 views

Stack , data and address space limits on an Ubuntu server

I am running an Ubuntu server which has around 5000 users. The users are allowed to SSH in to the system. So in order to cap the memory used up by a process I have capped the address space limits ...
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81 views

Getting the virtual memory address for (major) page faults

On a Linux (Cent OS 5) system, I have a process that accesses a large amount of memory mapped files. The process is generating a large amount of page faults because the aggregated size of the mapped ...
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27 views

Why would Memory\Available Bytes go down, even when Virtual Memory used is constant?

I have a long-running application that continually loops through video files. It runs for some hours, and then a message box appears along the lines of "The system is running low on memory...". I've ...
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88 views

How to increase or decrease the ram(memory) of vm in XEN by xl config-update..?

i am experimenting xen 4.2.1 and its features. xl config-update i created the vm with memory of 512. and i entered into the vm, Now i want to increse the memory to 1024 without destroying the ...