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Monitor your nodes with collectl
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© nobeastsofierce, 123RF.com
0 23 20120310 13:39:20 sdb 0 0 0 1 3 17 12 0 27 8 1 sda 0 0 0 0 0 0 0 0 0 0 0 24 20120310 13:39:30 sdb 0 0 0 0 0 0 0 0 0 0 0 sda 0 0 0 0 0 0 0 0 0 0 0 25 20120310 13:39:40 sdb 0 0 0 0 0 0 0 0 0 0 0
10%
Network monitoring with Icinga and Raspberry Pi
17.02.2015
Home »  Archive  »  2015  »  Issue 25: Safe...  » 
Lead Image © AndreaDanti, 123RF.com
service_description PING 11 check_command check_ping!100.0,20%!500.0,60% 12 } 13 define service{ 14 use generic-service ; Name of service template to use 15 ... 25
10%
S3QL filesystem for cloud backups
09.01.2013
Home »  Archive  »  2013  »  Issue 18: New W...  » 
Lead Image © stylephotographs, 123RF.com
_metadata_bak_0 09 4 -rw-r--r-- 1 root root 602 Nov 10 10:15 s3ql_metadata 10 4 -rw-r--r-- 1 root root 262 Nov 10 10:23 s3ql_seq_no_3 11 4 drwxr-xr-x 4 root root 4096 Nov 10 10:25 . 12 56 drwxr-xr-x
10%
Better compression of web pages
22.12.2017
Home »  Archive  »  2017  »  Issue 42: Secur...  » 
For nearly 20 years, web servers have relied on Gzip compression to compress HTML, CSS, and miscellaneous text files, which the browser then receives and unpacks again, speeding up data transfer
10%
Tuning I/O Patterns in Python
18.12.2013
Home »  HPC  »  Articles  » 
(One-by-One) 1 #include 2 3 /* Our structure */ 4 struct rec 5 { 6 int x,y,z; 7 float value; 8 }; 9 10 int main() 11 { 12 int counter; 13 struct rec my_record; 14 int counter_limit; 15
10%
Getting the most from your cores
11.10.2016
Home »  Archive  »  2016  »  Issue 35: Persi...  » 
Lead Image © ktsdesign, 123RF.com
straightforward. If a processor was operating at a fixed frequency of 2.0GHz, CPU utilization was the percentage of time the processor spent doing work. (Not doing work is idle time.) For 50% utilization
9%
Checking password complexity with John the Ripper
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
c/s virtual 12 13 Benchmarking: OpenBSD Blowfish (x32) [32/64 X2]... DONE 14 Raw: 723 c/s real, 723 c/s virtual 15 16 Benchmarking: Kerberos AFS DES [48/64 4K]... DONE 17 Short: 378501 c/s real
9%
Tools that extend Bash scripting
05.12.2016
Home »  Archive  »  2016  »  Issue 36: Autom...  » 
Lead Image © Laschon Maximilian, 123RF.com
't need a working X setup on the system, which is common in the admin world. tput (TUI): Tput is part of the ncurses package supplied with most Linux distributions. At first blush, tput [3] sounds really
9%
Kubernetes clusters within AWS EKS
02.08.2021
Home »  Archive  »  2021  »  Issue 64: Bare...  » 
Lead Image © Zlatko Guzmic, 123RF.com
-system coredns-6d97dc4b59-mdd8x 1/1 Running 0 25m kube-system kube-proxy-bkjbw 1/1 Running 0 20m kube-system kube-proxy-ctc6l 1/1 Running 0 19
9%
Connecting dissimilar IPsec implementations
30.11.2025
Home »  Archive  »  2011  »  Issue 4: Secure...  » 
© Yuri Arcurs, 123RF.com
versions worked best (and worst) together. My tests included the following: Kame/Racoon on Mac OS X and Linux Solaris 10 Windows Server 2008 Cisco-Router with IOS 12 Juniper SRX

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