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13%
Error-correcting code memory keeps single-bit errors at bay
14.11.2013
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Lead Image © Igor Stevanovic, 123RF.com
/bit-hr) to 1017 (seven orders of magnitude difference). The lower number is just about one error per gigabit of memory per hour. The upper number indicates roughly one error every 1,000 years per gigabit of memory
13%
Asynchronous PostgreSQL
12.09.2013
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Lead Image © Fesus Robert, 123RF.com
$st2->execute($dbh->{pg_pid}); 16 if( !$st2->fetchrow_arrayref->[0] ) { 17 warn "couldn't stop backend PID=$dbh->{pg_pid}\n"; 18 } 19 exit 1; 20 } 21 22 POSIX::sigaction(SIGTERM, POSIX
13%
Fundamentals of I/O benchmarking
11.04.2016
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Lead Image © Kheng Ho Toh, 123RF.com
needed to reposition the read head is eliminated. The admin can monitor merging of I/O blocks with iostat -x. This assumes the use of the filesystem cache. In Listing 2, wrqm/s stands for write requests
13%
CI/CD deliverables pipeline
07.06.2019
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Lead Image by serhat-beyazkaya, Unsplash.com
-y 17 18 RUN apt-get install -y \ 19 autoconf \ 20 automake \ 21 build-essential \ 22 ca-certificates \ 23 cmake \ 24 curl \ 25 g++-7 \ 26 git \ 27 less \ 28
13%
The practical benefits of network namespaces
15.08.2016
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Lead Image © Morganimation, fotolia.com
ns2 ip addr add 1.1.1.2/10 dev veth2 18 $ ip netns exec ns1 ip link set veth1 up 19 $ ip netns exec ns2 ip link set veth2 up 20 21 $ ip netns exec ns1 ping -c2 1.1.1.2 22 PING 1.1.1.2 (1.1.1.2) 56
13%
Secure remote access and web applications with two-factor authentication
16.05.2013
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© maigi, 123rf.com
, one-time passwords, or both. Certificate-based two-factor authentication typically uses digital PKI certificates based on the X.509 standard. These are typically stored on a hardware certificate storage
13%
Let the editor wars begin!
11.10.2016
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Lead Image © Kirill Makarov, 123RF.com
, interesting, and worthwhile exercise. I argue that systems administration needs a command-line editor, because it can be used even if X windows isn't working or isn't installed on the servers. Knowing how
13%
HPC Cloud Storage
20.11.2013
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_blocks.. ..symlink_targets.. ..names.. ..contents.. ..ext_attributes.. Compressing and uploading metadata... Wrote 0.00 MiB of compressed metadata. First, notice that I created the file as root. Second, the prefix
13%
Security data analytics and visualization with R
05.12.2014
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Lead Image © Rancz Andrei, 123RF.com
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