Solaris File Cache Post: 302228499

Sponsored Content

Operating Systems Solaris Solaris File Cache Post 302228499 by rajwinder on Sunday 24th of August 2008 10:14:56 PM

08-24-2008

Registered User

Solaris File Cache

I started a previous thread :

Coredumps and swap - was part of Solaris Mem Consumption

But my fault as there is no xml feed for this forum i lost track and thread got closed. So in the mean time i went through some docs and here are my queries :

1. mdb -k shows this to me :

Kernel --- 851120 ---- 6649 ----82%
Anon --- 99544 ---- 777 ----- 10%
Exec and libs ----- 8788 ----- 68 ----- 1%
Page cache ----- 24448 ----- 191 ----- 2%
Free (cachelist) ----- 32542 ----- 254 ----- 3%
Free (freelist) ----- 25260 ----- 197 ----- 2%

Total 1041702 8138
Physical 1024847 8006

2. We are using Vxfs.

3. I dont have memtools installed.

Q1. Output of "mdb -k" which shows 82 % Kernel , Does that mean that my kernel code is taking that much memory ( I dont think so ) OR does that mean that Kernel asked for this much memory for File , directory cache + buffers ( i think so )

Q2 . If kernel has asked for this much memory for file caching then why on running some other applicaiton it starts doing page outs which is like shortage of RAM? Ideally RAM used for file caching should be given to any program which want to get executed in RAM.

Thanks in advance
Raj

rajwinder

View Public Profile for rajwinder

Find all posts by rajwinder

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

UBC cache vs. Metadata cache

hi, What is the difference between UBC cache and Metadata cache ? where can i find UBC cache Hits and Metadata cache Hits in hp-ux? Advanced thanx for the help.

2. AIX

Why is my file system cache so large

Hi I have a filesystem cache which is around 20G in size and I'm a bit perplexed as to what is in it. I'm running Sybase on the machine with the db on raw volumes and a tempdb on a ramdisk. My understanding is that raw volumes are not cached and I assumed that the ramdisk is not either. Am...

3. Solaris

File cache portion of memory on Solaris

I'm looking to get the file cache portion of physical (real) memory on a Solaris workstation (Similar to the Cache: line in /proc/meminfo on some Linux systems): # swap -s; swap -l; vmstat 2 2; echo "::memstat" | mdb -k total: 309376k bytes allocated + 41428k reserved = 350804k used,...

4. 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...

5. Solaris

Zfs::zpool.cache file

Hi All, I am trying to read zpool.cache file to find out pool information like pool name, devices it uses and all properties. File seems to be in packed format.I am not sure how to unpack it. But from opensolaris code base we can see that they have used libz for uncompromising this file, but...

6. Linux

File cache /Page cache Linux

Hi All, could any one point out any open source test-suites for "File cache" testing and as well as performance test suites for the same. Currently my system is up with Linux/ext4. Regards Manish

7. Red Hat

Path of the DNS Cache file

We have a DNS server that is only using as a cache DNS of parent server. I wonder where it the cache file that it created from parent DNS? Please tell me where will be the cache file?

8. Solaris

NFS anche Cache on Solaris 10 Client

Hi all, in Solaris 10 u9 the NFS protocol use a cache for data files read write transitions in client side? for example the ZFS use the RAM behind the ARC cache. in case, how many large is the NFS cache? The NFS cache use a quantity of RAM? thank you Matteo

9. Programming

Synchronising cache and file

I am reading and caching some of the blocks of a large data file into program virtual memory, for processing. My question is how do I synchronise this cache with the file, for instance, if a block in the cache is updated or written to, that block has to be updated in the underlying file. If this...

10. UNIX for Beginners Questions & Answers

Check zfs cache usage for Solaris 11.3

Hi All, How do we calculate the zfs cache value from Solaris 11.3 ?? I normally use memstat but learnt that is not a good practice. Any other way to get the value ?

LEARN ABOUT DEBIAN

mdb-prop

MDBTools(1)															       MDBTools(1)

NAME

       mdb-prop - Get properties list from MDB database

SYNOPSIS

       mdb-prop database name [propcol]

DESCRIPTION

       mdb-prop is a utility program distributed with MDB Tools.

       Print a properties list from an MDB database.

       name is the name of the table, querry, or other object.

       propcol is the name of the system table MSysObjects' column containing properties. It defaults to LvProp.

ENVIRONMENT

       MDB_JET3_CHARSET
	      Defines the charset of the input JET3 (access 97) file. Default is CP1252. See iconv(1).

       MDBICONV
	      Defines the output charset. Default is UTF-8. mdbtools must have been compiled with iconv.

       MDBOPTS
	      semi-column separated list of options:

	      o  use_index

	      o  no_memo

	      o  debug_like

	      o  debug_write

	      o  debug_usage

	      o  debug_ole

	      o  debug_row

	      o  debug_props

	      o  debug_all is a shortcut for all debug_* options

SEE ALSO

       gmdb2(1) mdb-export(1) mdb-hexdump(1) mdb-sql(1) mdb-ver(1) mdb-array(1) mdb-header(1) mdb-parsecsv(1) mdb-schema(1) mdb-tables(1)

AUTHORS

       The mdb-prop utility was written by Brian Bruns.

0.7								   13 July 2013 						       MDBTools(1)

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

UBC cache vs. Metadata cache

Discussion started by: sushaga

2. AIX

Why is my file system cache so large

Discussion started by: mgibbons

3. Solaris

File cache portion of memory on Solaris

Discussion started by: Devyn

4. Linux

getting info on Cache Size, Data Cache etc..

Discussion started by: manustone