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Operating Systems Solaris The Fastest for copy huge data Post 302917408 by Corona688 on Tuesday 16th of September 2014 01:03:24 PM
Old 09-16-2014
Quote:
Originally Posted by edydsuranta
Dear Experts,

I would like to know what's the best method for copy data around 3 mio (spread in a hundred folders, size each file around 1kb) between 2 servers?
What is a "mio"?

If your connection isn't saturated, it sounds like you have folders containing hundreds of thousands of tiny files. This is never fast.

The speed limit on creating/deleting files in crowded directories is is an operating system limitation. The problem is that when a file entry in a folder is created or deleted, other things have to wait for it. And the larger a folder is, the more time it takes to add a file since its name has to be checked against the others for duplicates and consistency.

You cannot get around this limit using C, Perl, assembly language, or any other "creative" solution. It takes faster disks and CPU's to speed up a file tree that inefficient.

Last edited by Corona688; 09-16-2014 at 02:09 PM..
 

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RoPkg::Rsync::ConfFile(3pm)				User Contributed Perl Documentation			       RoPkg::Rsync::ConfFile(3pm)

NAME
RoPkg::Rsync::ConfFile DESCRIPTION
RoPkg::Rsync::ConfFile is a class used to manipulate rsync configuration files. Is capable to maintaine the order of the modules, and even keep your comments and empty lines intact. SYNOPSIS
#!/usr/bin/perl use warnings; use strict; sub main { my $cf = new RoPkg::Rsync::ConfFile(filename => '/etc/rsyncd.conf'); $cf->Write('/tmp/new_rsyncd.conf'); return 0; } main(); METHODS
All methods, throw the OutsideClass exception, if you use them as class methods. Besides OutsideClass the methods are throwing other exceptions as well. Refer to each method documentation for more information. new(%hash) The class constructor. Accepts a hash as parameter. At this moment only one parameter can be specified inside the hash: filename . If this parameter is present, the file specified is parsed and loaded into the object. AddParam($pname, $pvalue) Add a new global parameter named $pname with value $value. AddComment($pval) Add a new global comment with value $pval AddBlank($bval) Add a new global blank line with value $bval AddNode($node) Adds a new RoPkg::Rsync::Node object to the current object. Before the node is added, the nodes list is checked for duplicates of the object. If a duplicate is found, the method does nothing. Exceptions: If $node is not a instance of RoPkg::Rsync::Node, Param::Wrong exception is raised. DelNode($node_name) Removes a node from the nodes list. The nodes are searched by their names. Returns -1 if the node was not found, the new number of nodes otherwise. HasNode($node_name) Returns 1 if the node with name $node_name was found in the nodes list, 0 otherwise. Clean() Clean the object. Removes all information (the nodes list, statistics, etc). Always returns 1. Parse($filename) Parse the configuration file $filename and returns the number of nodes. If $filename is not defined Param::Missing exception is raised. If the path does not point to a existing file, File::NotFound exception is raised. If the file could not be opened, File::Open exception is raised. Write($path) Write the configuration into the file specified by path $path. ToString() Returns the string representation of the configuration file. PREREQUISITES
perl 5.008 (or later) is required. Besides perl, you must have the following: *) RoPkg::Exceptions *) Scalar::Util *) English SEE ALSO
RoPkg::Rsync::Atom RoPkg::Rsync::ConfFile RoPkg::Exceptions AUTHOR
Subredu Manuel <diablo@iasi.roedu.net> LICENSE
Copyright (C) 2005 Subredu Manuel. All Rights Reserved. This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The LICENSE file contains the full text of the license. perl v5.8.8 2006-06-09 RoPkg::Rsync::ConfFile(3pm)
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