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17%
Profiling Python Code
09.12.2019
Home »  HPC  »  Articles  » 
 to check follows a, b = 1,2 c = a + b # Code to check ends end_time = time.time() time_taken = (end_time- start_time)   print(" Time taken in seconds: {0} s").format(time_taken_in_micro) If a section of code
17%
Simple, small-scale Kubernetes distributions for the edge
03.04.2024
Home »  Archive  »  2024  »  Issue 80: Threa...  » 
Lead Image © grafner, 123RF.com
on machines with only one CPU core and 512MB of RAM; the minimalist K3s setup itself only uses 250MB. As one of the radical cost-cutting measures, K3s dispenses with the I/O-intensive etcd database
17%
Halting the ransomware blackmail wave
05.12.2016
Home »  Archive  »  2016  »  Issue 36: Autom...  » 
Lead Image © sandra zuerlein, fotolia.com
.5 to 1 bitcoins (about EUR200-400/$217-434) to the cybercriminals. In return, the victim receives the private key for decrypting the files. This blackmail trojan is currently spreading rapidly throughout
17%
Managing Linux systems with Spacewalk
14.11.2013
Home »  Archive  »  2013  »  Issue 17: Cloud...  » 
Lead Image © NASA
(Session); 11 %EXPORT_TAGS = ( DEFAULT => [qw(&Session)] ); 12 13 sub Session { 14 open(IN, "/etc/sysconfig/spacewalk_api.conf") or die "Spacewalk API config not found: $!"; 15 $_ = ; 16 my ($server
17%
Nagios alerts implemented via VoIP
14.03.2013
Home »  Archive  »  2013  »  Issue 13: IPv6...  » 
© Zentilia, 123RF.com
=/opt/pjsua.conf 06 SOUNDFILE=/tmp/alert.wav 07 TEXT2WAVE=/usr/bin/text2wave 08 DURATION=20 09 NUMBER=01234567890 10 MESSAGE="Monitoring Alert" 11 12 # Setting a lock file 13 # We can't make more than one call 14
17%
Monitoring daemons with shell tools
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Shariff Che'Lah, 123RF.com
#! /bin/sh 02 03 while true 04 do 05 06 zeit=$(date +%d.%m.%y\ %H:%M\ ) 07 08 psql -U monitor -d monitor -c "select * from watch;" 09 10 if [ $? -eq 2 ]; 11 12 then 13 14 echo "$time: Database
17%
Tracing applications with OProfile and SystemTap
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© boing, Photocase.com
. The target systems only require the systemtap-runtime RPM and the staprun program it contains. The following command creates a prebuilt binary kernel module for the target system: stap -r kernel-PAE-2.6.31.12-174.2.22
17%
The practical benefits of network namespaces
15.08.2016
Home »  Archive  »  2016  »  Issue 34: Softw...  » 
Lead Image © Morganimation, fotolia.com
it through a ping test. The routing table, as defined in line 12, is only present in the ns1 namespace. With /etc/netns/ns1, $ mkdir -pv /etc/netns/ns1 mkdir: created directory ?/etc/netns? mkdir: created
17%
HDF5 with Python and Fortran
21.03.2017
Home »  HPC  »  Articles  » 
   # =================== 09   # 10  if __name__ == '__main__': 11  12      f = h5py.File("mytestfile.hdf5", "w") 13  14      dset = f.create_dataset("mydataset", (100,), dtype='i') 15     16      dset[...] = np.arange(100) 17
17%
SmartOS: Cool Cloud Platform Rises from the Ashes of Solaris
10.06.2014
Home »  Articles  » 
kernel 3.12, so that SmartOS at least installed without error messages, although it would hang if you tried to launch a KVM machine. Although you don’t have to worry about installation, you do need to set

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