Imported upstream version 1.4.8

[pkg-rrdtool.git] / doc / rrdtool.txt

diff --git a/doc/rrdtool.txt b/doc/rrdtool.txt
index 5c777d8af3a6b9e4386c8bbdf9314ca4a5ba38c0..e48f1c41c0593b9408b5e3b347c11aa6964698ba 100644 (file)
--- a/doc/rrdtool.txt
+++ b/doc/rrdtool.txt
@@ -68,7 +68,11 @@ D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN
                Change the size of individual RRAs. This is dangerous! Check
                rrdresize.
 
-       x\bxp\bpo\bor\brt\bt   Export data retrieved from one or several RRDs. Check rrdxport
+       x\bxp\bpo\bor\brt\bt   Export data retrieved from one or several RRDs. Check rrdxport.
+
+       f\bfl\blu\bus\bsh\bhc\bca\bac\bch\bhe\bed\bd
+               Flush the values for a specific RRD file from memory. Check
+               rrdflushcached.
 
        r\brr\brd\bdc\bcg\bgi\bi  This is a standalone tool for producing RRD graphs on the fly.
                Check rrdcgi.
@@ -78,7 +82,7 @@ D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN
                When monitoring the state of a system, it is convenient to have
                the data available at a constant time interval. Unfortunately,
                you may not always be able to fetch data at exactly the time
-               you want to. Therefore R\bRR\bRD\bDt\bto\boo\bol\bl lets you update the logfile at
+               you want to. Therefore R\bRR\bRD\bDt\bto\boo\bol\bl lets you update the log file at
                any time you want. It will automatically interpolate the value
                of the data-source (D\bDS\bS) at the latest official time-slot
                (interval) and write this interpolated value to the log. The
@@ -256,9 +260,15 @@ D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN
        N\bNO\bOT\bTE\bE:\b: that there is no authentication with this feature! Do not setup
        such a port unless you are sure what you are doing.
 
+R\bRR\bRD\bDC\bCA\bAC\bCH\bHE\bED\bD,\b, T\bTH\bHE\bE C\bCA\bAC\bCH\bHI\bIN\bNG\bG D\bDA\bAE\bEM\bMO\bON\bN
+       For very big setups, updating thousands of RRD files often becomes a
+       serious IO problem. If you run into such problems, you might want to
+       take a look at rrdcached, a caching daemon for RRDtool which may help
+       you lessen the stress on your disks.
+
 S\bSE\bEE\bE A\bAL\bLS\bSO\bO
        rrdcreate, rrdupdate, rrdgraph, rrddump, rrdfetch, rrdtune, rrdlast,
-       rrdxport
+       rrdxport, rrdflushcached, rrdcached
 
 B\bBU\bUG\bGS\bS
        Bugs? Features!
@@ -268,4 +278,4 @@ A\bAU\bUT\bTH\bHO\bOR\bR
 
 
 
-1.3.8                             2008-12-22                        RRDTOOL(1)
+1.4.8                             2013-05-23                        RRDTOOL(1)