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22%
Monitoring Performance with sar
05.03.2014
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-
s
12:
00:00
-e 13:
00:00
Linux
3
.5.0-43-generic (hercules) 02.12.2013 _x86_64_ (2 CPU) 12:05:01 CPU %user %nice %system %iowait %steal %idle 12
22%
Collecting and evaluating performance data over a period of time
20.03.2014
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2014
»
Issue 19: Perim...
»
jcb@hercules:# sar -u -f /var/log/sysstat/sa02 -
s
12:
00:00
-e 13:
00:00
Linux
3
.5.0-43-generic (hercules) 02.12.2013 _x86_64_ (2 CPU) 12:05:01 CPU %user %nice %system
22%
Nagios Passive Checks
21.08.2014
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Issue 22: OpenS...
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00:00-24:00
07 wednesday
00:00-24:00
08
thursday
00:00-24:00
09 friday
00:00-24:00
10 saturday
22%
Greylisting with Postgrey
22.06.2012
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: Qmail Delivery Retry Events Delivery Attempt Seconds D-HH:MM:SS 1 0 0-
00:00:00
2 400 0-
00
:06:40
3
1600 0-
00
:26:40 4
22%
The practical benefits of network namespaces
15.08.2016
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2016
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Issue 34: Softw...
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: eth0:
mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000 07 link/ether 52:54:
00
:01:b0:24 brd ff:ff:ff:ff:ff:ff
08
3
: eth1:
22%
Checking password complexity with John the Ripper
30.11.2025
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2011
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Issue 6: Perfor...
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-incremental:lanman passfile.txt 02 Loaded 2 passwords with 2 different salts (FreeBSD MD5 [32/64]) 03 guesses: 0 time: 1:04:04:
08
(
3
) c/
s
: 10927 trying: gmugoky - gmugok2 04 guesses: 0 time: 1:09:25:10 (
3
22%
hwloc: Which Processor Is Running Your Service?
07.11.2011
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GB) 03 Socket P#0 04 Core L#0 + PU L#0 (P#0) 05 Core L#1 + PU L#1 (P#2) 06 Core L#2 + PU L#2 (P#4) 07 Core L#
3
+ PU L#
3
(P#6)
08
NUMANode P#1 (12GB) 09 Socket P#1 10 ... Examine and optimize your server’
s
internal topology with this hardware locality tool suite.
22%
Process, Network, and Disk Metrics
26.02.2014
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reqs merged:
3
.78/
s
Write reqs completed: 2.10/
s
Read BW: 0.
00
MB/
s
Write BW: 0.02 MB/
s
Avg sector size issued 23.78 Avg
22%
Profiling Python code
30.01.2020
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Issue 55: AWS L...
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without profiling). Listing
3
pprofile Output Command line: md_002.py Total duration: 1662.48
s
File: md_002.py File duration: 1661.74
s
(99.96%) Line #| Hits| Time| Time per hit
22%
John the Ripper
22.08.2011
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:lanman passfile.txt Loaded 2 passwords with 2 different salts (FreeBSD MD5 [32/64]) guesses: 0 time: 1:04:04:
08
(
3
) c/
s
: 10927 trying: gmugoky - gmugok2 guesses: 0 time: 1:09:25:10 (
3
) c/
s
: 10929 trying ... Easy to remember but difficult to guess isn’t just a catchy phrase for choosing passwords, it’
s
the law of the Net. Learn how to check your password using a tool network intruders use every day
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