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100%
Monitor your nodes with collectl
30.11.2025
Home
»
Archive
»
2012
»
Issue 09: Windo...
»
: AuthenticAMD Speed(MHz): 2812.629 Cores: 4 Siblings: 4 Nodes: 1 13 # Kernel: 2.6.32-220.4.1.el6.
x
86_64 Memory: 7540044 Swap: 14 # NumDisks: 2 DiskNames: sdb sda 15 # NumNets: 2 NetNames: lo: eth
0:100
16 # Num
95%
RAM revealed
30.11.2025
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Archive
»
2011
»
Issue 6: Perfor...
»
GKF8S 16 DDR3, Registered, ECC, 4 rank 8.710
0
.54 AL
24
M72E4BKH9S 8 DDR3, Registered, ECC, 2 rank 6.132
0
.77 AL12M72B8BKH9S
94%
Monitoring network computers with the Icinga Nagios fork
30.11.2025
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»
Archive
»
2010
»
Issue 1: System...
»
check_interval 5 12 retry_interval 1 13 contacts spz_admin 14 notification_period
24
x
7 15
94%
Intruder detection with tcpdump
30.11.2025
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»
Archive
»
2012
»
Issue 07: Xen v...
»
.g., 192.168.
0.0/24
). # tcpdump net 192.168.1.1/
24
Src, dst Only capture packets from a source or destination. # tcpdump src 192.168.
100
.234# tcpdump dst 10.10.
24
.56 host
94%
Beyond monitoring: Mathematical load simulation in Perl
30.11.2025
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Archive
»
2011
»
Issue 6: Perfor...
»
(%) Sdb (%) 1
24
0
.039 21 8 4 2 48
0
.039 41 13 5 4 85
0
.044 74 20 5 7
92%
Check your VoIP networks with SIPVicious and sngrep
30.11.2025
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2025
»
Issue 90 VoIP N...
»
Processing in Wireshark Session Initiation Protocol (
100
Trying) Status Line: SIP/2.
0
100
Trying Via: SIP/2.
0
/UDP 192.168.1.101:5060; branch=z9hG4bK776asdhds From:
; tag
91%
Using Univention Corporate Server 2.4 for virtual infrastructure management
30.11.2025
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»
Archive
»
2011
»
Issue 4: Secure...
»
administrators the ucr set tool for this purpose. ucr set grub/xenhopt="dom
0
_mem=xxxxM dom
0
_max_vcpus=
x
dom
0
_vcpus_
pin
" In this example, xxxx stands for the amount of RAM to be allocated in megabytes;
x
stands ... Using Univention Corporate Server
2.4
for virtual infrastructure management
91%
Checking password complexity with John the Ripper
30.11.2025
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2011
»
Issue 6: Perfor...
»
, 378501 c/s virtual 18 Long: 1063K c/s real, 1063K c/s virtual 19 20 Benchmarking: LM DES [64/64 BS]... DONE 21 Raw: 8214K c/s real, 8214K c/s virtual 22 23 Benchmarking: NT MD4 [Generic 1
x
]... DONE
24
90%
Cgroups for resource management in Linux
30.11.2025
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Archive
»
2011
»
Issue 6: Perfor...
»
in the cgroup. You can then use the tc with the group. Start by defining the classID for the cgroup: echo
0
x
00100001 > /cgroup/net_cls/libvirt/qemu/guest/net_cls.classid This hexadecimal number comprises two
89%
Fishing with Remora
09.12.2025
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communication. The test system runs Ubuntu
24
.04 with the NVIDIA HPC SDK (version 25.7) and includes a 32-core CPU with hyperthreading and a single NVIDIA RTX 5000 GPU. No process or thread binding was applied
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