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43%
HPC Storage – I/O Profiling
26.01.2012
Home »  HPC  »  Articles  » 
to iotop, iostat gives more detail on the actual I/O, but it does it in an aggregate manner (i.e., not a per-process basis). Perhaps more importantly, iostat reports on a device basis, not a mountpoint basis
43%
Building an HPC Cluster
16.06.2015
Home »  HPC  »  Articles  » 
. The easiest choice is to install the source packages in the shared directory. The next, and actually last, piece of software you need is SSH. More specifically, you need to be able to SSH to and from each node
43%
Coming to grips with grep
05.12.2014
Home »  Archive  »  2014  »  Issue 24: Visua...  » 
Lead Image © Andrey Lavrushov, 123RF.com
is actually a viewer converting compressed content from the file /usr/share/info/grep.info.gz – thanks to the functionality of grep and less. With the malleable grep command, it's possible to look through
43%
Posteo, Mailbox.org, Tutanota, and ProtonMail compared
10.04.2015
Home »  Archive  »  2015  »  Issue 26: OpenS...  » 
Lead Image © Kirill Bodrov, 123RF.com
It is a truism that nothing is actually free from the vast majority of email providers who offer free email forwarding and a webmail client: Most ad-supported services collect users' data
43%
Open source multipoint VPN with VyOS
13.12.2018
Home »  Archive  »  2018  »  Issue 48: Secur...  » 
Photo by Damon Lam on Unsplash
RIP can't even decide which path is actually shorter. The result is poor: Either the traffic is load-shared over all links, or the wrong path is taken, which could end in asymmetric routing. The metric
43%
A Distributed SQL Database
03.08.2023
Home »  Archive  »  2023  »  Issue 76: Energ...  » 
Photo by Sonika Agarwal on Unsplash
_aws_secret_key> with your actual AWS credentials. To restore a database from a backup, you can use the RESTORE statement. The following example restores the mydb database from the local backup created earlier: RESTORE
43%
Application virtualization with Docker
08.10.2015
Home »  Archive  »  2015  »  Issue 29: Rescu...  » 
Lead Image © Oleksiy Mark, 123RF.com
/lib/docker/devicemapper/devicemapper/data you will see how much disk space the file actually occupies on the filesystem. The more images you use, the greater the disk space required. If the standard size of 100GB is no longer sufficient, you
43%
Keeping Docker containers safe
13.02.2017
Home »  Archive  »  2017  »  Issue 37: Distr...  » 
Lead Image © Irina Tischenko, 123RF.com
filesystem, a CD-ROM drive in Linux is usually a file called /dev/cdrom (actually, it's a symlink to /dev/sr0 for a SCSI drive), which streams data from your hardware to the system. For security reasons, when
43%
Fundamentals of I/O benchmarking
11.04.2016
Home »  Archive  »  2016  »  Issue 32: Measu...  » 
Lead Image © Kheng Ho Toh, 123RF.com
actually need? In this article, we will help you answer all these questions. Fundamentals An I/O request passes through several layers (Figure 1) in the operating system. These layers each build on one
43%
The pros and cons of a virtual desktop infrastructure
12.09.2013
Home »  Archive  »  2013  »  Issue 16: Docker  » 
Lead Image © Mariia Puliaieva, 123RF.com
in the connectionless period are then synchronized back to the server later. At the end of the day, nothing actually needs to be virtualized; instead, you can run the desktop on centralized physical hardware (e

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