buffer cache size

Operating Systems Linux Red Hat buffer cache size

09-07-2006

Registered User

7, 0

Join Date: Nov 2005

Last Activity: 24 January 2011, 1:26 AM EST

Location: India

Posts: 7

Thanks Given: 0

Thanked 0 Times in 0 Posts

buffer cache size

hi everyone,
can any one help change the buffer cache size in redhat and suse?? this error i got when i installed oracle 10g and it went well and when i try to mount the database using startup cmd it says too many buffer cache parameters (error code : ora-1034)

thnq in advance

gsr_kashyap

View Public Profile for gsr_kashyap

Find all posts by gsr_kashyap

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Programming

[c] How to calculate size of the file from size of the buffer?

Hi, Can I find size of the file from size of the buffer written? nbECRITS = fwrite(strstr(data->buffer, ";") + 1, sizeof(char), (data->buffsize) - LEN_NOM_FIC, fic_sortie); Thank You :)

2. Shell Programming and Scripting

bash history buffer cache

Moderators, Please excuse if I am in the wrong section. I have a question that someone may know the answer to. We know that a current bash shell keeps a record of all commands in a buffer. When the shell is terminated this buffer is written out to ~/.bash_history for the user. I know...

3. Linux

getting info on Cache Size, Data Cache etc..

Hi all I saw in Microsoft web site www.SysInternals.com a tool called CoreInfo from able to print out on screen the size of the Data and Instruction caches of your processor, the Locigal to Physical Processor mapping, the number of the CPU sockets. etc.. Do you know if in Linux is available a...

4. Filesystems, Disks and Memory

Buffer Cache Stats from /proc/meminfo

Hi, I am trying to understand the role of buffer cache in block I/O. I am monitoring /proc/meminfo, my question is does the value of 0 for 'buffers', mean that any subsequent disk read issued by a process, would get the data physically from the disk, and not an allocated buffer for the block? ...

5. UNIX for Dummies Questions & Answers

Cache Fils Size

Greetings, I haven't posted in a while and have a Firefox question. I'm running Firefox 2.0.0.6 on Ubuntu 710 and am wondering if there is a way to increase the maximum size of files captured into the cache. The cache size was 50 megabytes and that seemed limit the files to 24 Meg. Increasing...

6. UNIX for Dummies Questions & Answers

reduce buffer cache allocation?

Hi, Is it possible to reduce the amount of buffer cache in the memory allocation of a Unix Server? If so where can I do that? Also, does buffer cache count as tied up memory, or will it decrease as more memory is requested by other programs.

7. Solaris

Unix Cache / Buffer

Does anyone know how the unix buffer / cache is set in a Solaris based system ? ( I presume it is a kernel based setting ) I notice from SAR -d that my read cache is consistently at 100% but my write cache frequently falls below 65%. What does this mean. Should I be tuning the write cache and...

8. HP-UX

Buffer Cache

What is the "Buffer Cache" used for?

9. UNIX for Advanced & Expert Users

vm and buffer cache

i have a serious doubht about the assignment of memory in hp-ux system . i read from somewhere that the page allocation in hp-ux is not unified unlike compaq . i wanted to know in hp-ux kernel ,once the pages are assigned for the univarsal buffer cache...

10. Filesystems, Disks and Memory

buffer cache information

anybody please tell me how do i get all the information about buffer cache in hp-ux .if anybody familiar with the system call them please specify . i found the extern variables in /sys/buf.h . but that didn't help .:)

LEARN ABOUT SUSE

kmem_cache_create

KMEM_CACHE_CREATE(9)					    Memory Management in Linux					      KMEM_CACHE_CREATE(9)

NAME

       kmem_cache_create - Create a cache.

SYNOPSIS

       struct kmem_cache * kmem_cache_create(const char * name, size_t size, size_t align, unsigned long flags, void (*ctor) (void *));

ARGUMENTS

       name
	   A string which is used in /proc/slabinfo to identify this cache.

       size
	   The size of objects to be created in this cache.

       align
	   The required alignment for the objects.

       flags
	   SLAB flags

       ctor
	   A constructor for the objects.

DESCRIPTION

       Returns a ptr to the cache on success, NULL on failure. Cannot be called within a int, but can be interrupted. The ctor is run when new
       pages are allocated by the cache.

       name must be valid until the cache is destroyed. This implies that the module calling this has to destroy the cache before getting
       unloaded. Note that kmem_cache_name is not guaranteed to return the same pointer, therefore applications must manage it themselves.

       The flags are

       SLAB_POISON - Poison the slab with a known test pattern (a5a5a5a5) to catch references to uninitialised memory.

       SLAB_RED_ZONE - Insert `Red' zones around the allocated memory to check for buffer overruns.

       SLAB_HWCACHE_ALIGN - Align the objects in this cache to a hardware cacheline. This can be beneficial if you're counting cycles as closely
       as davem.

COPYRIGHT

Kernel Hackers Manual 2.6.					     July 2010						      KMEM_CACHE_CREATE(9)

Red Hat