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30%
When I/O workloads don't perform
02.08.2021
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2021
»
Issue 64: Bare...
»
.91 0.01 79.70 0.
08
0.42 0.03 0.
00
301.34
3
.98 1.02 7.24 sdb 0.31 55.97 4.13 17676.32 0.
00
231.64 0.
00
80.54 2.50 8.47 0.32 13.45 315.84 1
30%
When I/O Workloads Don’t Perform
12.05.2021
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HPC
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30.85 72.31 13.16 20.40 0.26 70.44 83.89 1.97
3
.52 nvme0n1 58.80 12.22 17720.47 48.71 230.91 0.01 79.70 0.
08
0.42 0.03 0.
00 301.34 3
30%
Network analysis with the Bro Network Security Monitor
05.12.2014
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2014
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Issue 24: Visua...
»
? S Oct 19 7-
00
:03:58 bro (+) root 11792 11766 11.4
3.3
150888 51400 ? S Oct 19 2-07:05:05 bro Listing
3
netstats [BroControl] > netstats bro: 1415509669
28%
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:
28%
Nagios Passive Checks
21.08.2014
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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
27%
Rethinking RAID (on Linux)
16.03.2021
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=libaio, iodepth=32 fio-
3
.12 Starting 1 process Jobs: 1 (f=1): [w(1)][100.0%][w=1420KiB/s][w=355 IOPS][eta
00
m:
00
s] test: (groupid=0, jobs=1): err= 0: pid=3377: Sat Jan 9 15:31:04 2021 write: IOPS=352, BW=1410Ki
27%
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
27%
Collecting and evaluating performance data over a period of time
20.03.2014
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2014
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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
27%
Profiling Python code
30.01.2020
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2020
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Issue 55: AWS L...
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%|
3
| 2|
3
.50475e-05| 1.75238e-05| 0.
00
%|import platform 4| 1| 2.19345e-05| 2.19345e-05| 0.
00
%|from time import clock (call)| 1| 2.67029e-05| 2.67029e-05| 0.
00
27%
Monitoring network computers with the Icinga Nagios fork
30.11.2025
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2010
»
Issue 1: System...
»
141.20.108.124 07 active_checks_enabled 1
08
passive_checks_enabled 0 09 max_check_attempts
3
10 check_command check-host-alive 11
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