Sponsored Content
Operating Systems Linux Red Hat High RAM usage, extremely low swapping Post 302624793 by hedkandi on Monday 16th of April 2012 10:20:47 PM
Old 04-16-2012
MySQL SOLVED

@corona, thanks that was a relief. I logged a case with RHEL just in case and they told me the same thing you did but in totally incomprehensible terms Smilie

@mark, thanks for the vmstat syntax. I suppose cat /proc/meminfo provided me with more or less the same info

@murphy, I did check the link you provided but I got lost halfway thru Smilie I think I was just too stressed to figure it out yesterday!

Anyways, just in case someone comes across this thread and wants answers, following is the math concoction:

Code:
For example (Units are in megabytes):

# free -m
             total       used       free     shared    buffers     cached
Mem:          1000        900        100          0        350        350
-/+ buffers/cache:        200        800

In this example, as far as applications are concerned the system is using only 200MB of memory and has 800MB free and available for use if needed.

Note: in this example,

    Total Physical Memory = 1000 M

    Physically Used Memory = 900 M

    Actual used memory = 200 M

    buffers = 350 M

    cached = 350 M

    Physically Free Memory = 100 M

    Memory free for Applications = 800 M

The items to note here are:

<Physically Used Memory> = <Actual used memory> + <buffers> + <cache> = 200 + 350 + 350 = 900 M

<Physically Free Memory> = <Total Physical Memory> - <Actual used memory> - <buffers> - <cache> = 1000 - 200 - 350 - 350 = 100 M

<Memory free for Applications> = <Total Physical Memory> - <Actual used memory> = 1000 - 200 = 800 M

<Memory used  by Applications> = <Physically Used Memory> - <buffers> - <cache> = 900 - 350 - 350 = 200 M

This User Gave Thanks to hedkandi For This Post:
 

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

low RAM

Hy, I've an 486 dx2 laptop an I want to run unix on it, the problem is it has only 4 megabytes of ram, so my question is; does anybody know an unix based OS which runs with only 4 mb? thanx (7 Replies)
Discussion started by: counTnegaTive
7 Replies

2. UNIX for Advanced & Expert Users

Sun: High kernel usage & very high load averages

Hi, I am seeing very high kernel usage and very high load averages on my system (Although we are not loading much data to our database). Here is the output of top...does anyone know what i should be looking at? Thanks, Lorraine last pid: 13144; load averages: 22.32, 19.81, 16.78 ... (4 Replies)
Discussion started by: lorrainenineill
4 Replies

3. Solaris

malloc returning NULL if freemem high & swapmem low

Hi All, In my application malloc is returning NULL even though there is sufficient amount of free memory is available but swap memory is low. Is this possible that, if free memory is high & swap memory is low, malloc will not be able to allocate memory & return NULL ?:) Kindly look into... (5 Replies)
Discussion started by: Ritesh Kumar
5 Replies

4. Shell Programming and Scripting

low & high values

on the file Ftp'd from the mainframe ,do we have any UNIX command to replace mainframe low and values to space or null. i tried using tr and it doesn't work ... Thanks (1 Reply)
Discussion started by: rlmadhav
1 Replies

5. Shell Programming and Scripting

Picking high and low variables in a bash script - possible?

Is it possible to have a bash script pick the highest and lowest values of four variables? I've been googling for this but haven't come up with anything. I have a script that assigns variables ($c0, $c1, $c2, and $c3) based on the coretemps from grep/sed statements of sensors. I'd like to also... (5 Replies)
Discussion started by: graysky
5 Replies

6. Shell Programming and Scripting

Split file into chunks of low & high byte

Hi guys, i have a question about spliting a binary file into 2 chunks. First chunk with all high bytes and the second one with all low bytes. What unix tools can i use? And how can this be performed? I looked in manpages of split and dd but this does not help. Thanks (2 Replies)
Discussion started by: basta
2 Replies

7. UNIX for Advanced & Expert Users

Extremely high kernel CPU Usage (Solaris 10 SPARC)

I've got a domain running on a few boards of a 25k. I'm seeing very high kernel cpu usage in top and cant' quite explain it. System runs a large number of smallish Oracle 10g2 databases (30), used mainly for development. load average: 36.63, 36.68, 37.42 2489 processes: 2452 sleeping, 21... (0 Replies)
Discussion started by: utopiajoe
0 Replies

8. UNIX for Dummies Questions & Answers

Kernel/ user space and high/ low mem

Need some clarification on this.... 1. how are kernel/ user spaces and high/low memory related? 2. What do they all mean when i have the kernel command line as: "console=ttyS0,115200 root=/dev/sda2 rw mem=exactmap memmap=1M@0 memmap=96M@1M irqpoll" or 2. what do mem and memmap mean in... (3 Replies)
Discussion started by: dragonpoint
3 Replies

9. AIX

High Runqueue (R) LOW CPU LOW I/O Low Network Low memory usage

Hello All I have a system running AIX 61 shared uncapped partition (with 11 physical processors, 24 Virtual 72GB of Memory) . The output from NMON, vmstat show a high run queue (60+) for continous periods of time intervals, but NO paging, relatively low I/o (6000) , CPU % is 40, Low network.... (9 Replies)
Discussion started by: IL-Malti
9 Replies
ogrinfo(1)						      General Commands Manual							ogrinfo(1)

NAME
ogrinfo - ogrinfo lists information about an OGR supported data source SYNOPSIS
ogrinfo [--help-general] [-ro] [-q] [-where restricted_where] [-spat xmin ymin xmax ymax] [-fid fid] [-sql statement] [-dialect dialect] [-al] [-so] [-fields={YES/NO}] [-geom={YES/NO/SUMMARY}][--formats] datasource_name [layer [layer ...]].fi DESCRIPTION
The ogrinfo program lists various information about an OGR supported data source to stdout (the terminal). -ro: Open the data source in read-only mode. -al: List all features of all layers (used instead of having to give layer names as arguments). -so: Summary Only: supress listing of features, show only the summary information like projection, schema, feature count and extents. -q: Quiet verbose reporting of various information, including coordinate system, layer schema, extents, and feature count. -where restricted_where: An attribute query in a restricted form of the queries used in the SQL WHERE statement. Only features matching the attribute query will be reported. -sql statement: Execute the indicated SQL statement and return the result. -dialect dialect: SQL dialect. In some cases can be used to use (unoptimized) OGR SQL instead of the native SQL of an RDBMS by passing OGRSQL. -spat xmin ymin xmax ymax: The area of interest. Only features within the rectangle will be reported. -fid fid: If provided, only the feature with this feature id will be reported. Operates exclusive of the spatial or attribute queries. Note: if you want to select several features based on their feature id, you can also use the fact the 'fid' is a special field recognized by OGR SQL. So, '-where 'fid in (1,3,5)'' would select features 1, 3 and 5. -fields={YES/NO}: (starting with GDAL 1.6.0) If set to NO, the feature dump will not display field values. Default value is YES. -geom={YES/NO/SUMMARY}: (starting with GDAL 1.6.0) If set to NO, the feature dump will not display the geometry. If set to SUMMARY, only a summary of the geometry will be displayed. If set to YES, the geometry will be reported in full OGC WKT format. Default value is YES. --formats: List the format drivers that are enabled. datasource_name: The data source to open. May be a filename, directory or other virtual name. See the OGR Vector Formats list for supported datasources. layer: One or more layer names may be reported. If no layer names are passed then ogrinfo will report a list of available layers (and their layerwide geometry type). If layer name(s) are given then their extents, coordinate system, feature count, geometry type, schema and all features matching query parameters will be reported to the terminal. If no query parameters are provided, all features are reported. Geometries are reported in OGC WKT format. EXAMPLE
Example reporting all layers in an NTF file: % ogrinfo wrk/SHETLAND_ISLANDS.NTF INFO: Open of `wrk/SHETLAND_ISLANDS.NTF' using driver `UK .NTF' successful. 1: BL2000_LINK (Line String) 2: BL2000_POLY (None) 3: BL2000_COLLECTIONS (None) 4: FEATURE_CLASSES (None) Example using an attribute query is used to restrict the output of the features in a layer: % ogrinfo -ro -where 'GLOBAL_LINK_ID=185878' wrk/SHETLAND_ISLANDS.NTF BL2000_LINK INFO: Open of `wrk/SHETLAND_ISLANDS.NTF' using driver `UK .NTF' successful. Layer name: BL2000_LINK Geometry: Line String Feature Count: 1 Extent: (419794.100000, 1069031.000000) - (419927.900000, 1069153.500000) Layer SRS WKT: PROJCS["OSGB 1936 / British National Grid", GEOGCS["OSGB 1936", DATUM["OSGB_1936", SPHEROID["Airy 1830",6377563.396,299.3249646]], PRIMEM["Greenwich",0], UNIT["degree",0.0174532925199433]], PROJECTION["Transverse_Mercator"], PARAMETER["latitude_of_origin",49], PARAMETER["central_meridian",-2], PARAMETER["scale_factor",0.999601272], PARAMETER["false_easting",400000], PARAMETER["false_northing",-100000], UNIT["metre",1]] LINE_ID: Integer (6.0) GEOM_ID: Integer (6.0) FEAT_CODE: String (4.0) GLOBAL_LINK_ID: Integer (10.0) TILE_REF: String (10.0) OGRFeature(BL2000_LINK):2 LINE_ID (Integer) = 2 GEOM_ID (Integer) = 2 FEAT_CODE (String) = (null) GLOBAL_LINK_ID (Integer) = 185878 TILE_REF (String) = SHETLAND I LINESTRING (419832.100 1069046.300,419820.100 1069043.800,419808.300 1069048.800,419805.100 1069046.000,419805.000 1069040.600,419809.400 1069037.400,419827.400 1069035.600,419842 1069031,419859.000 1069032.800,419879.500 1069049.500,419886.700 1069061.400,419890.100 1069070.500,419890.900 1069081.800,419896.500 1069086.800,419898.400 1069092.900,419896.700 1069094.800,419892.500 1069094.300,419878.100 1069085.600,419875.400 1069087.300,419875.100 1069091.100,419872.200 1069094.600,419890.400 1069106.400,419907.600 1069112.800,419924.600 1069133.800,419927.900 1069146.300,419927.600 1069152.400,419922.600 1069153.500,419917.100 1069153.500,419911.500 1069153.000,419908.700 1069152.500,419903.400 1069150.800,419898.800 1069149.400,419894.800 1069149.300,419890.700 1069149.400,419890.600 1069149.400,419880.800 1069149.800,419876.900 1069148.900,419873.100 1069147.500,419870.200 1069146.400,419862.100 1069143.000,419860 1069142,419854.900 1069138.600,419850 1069135,419848.800 1069134.100,419843 1069130,419836.200 1069127.600,419824.600 1069123.800,419820.200 1069126.900,419815.500 1069126.900,419808.200 1069116.500,419798.700 1069117.600,419794.100 1069115.100,419796.300 1069109.100,419801.800 1069106.800,419805.000 1069107.300) AUTHORS
Frank Warmerdam warmerdam@pobox.com, Silke Reimer silke@intevation.de GDAL
Tue Sep 18 2012 ogrinfo(1)
All times are GMT -4. The time now is 01:32 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy