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24%
When I/O Workloads Don’t Perform
12.05.2021
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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
24%
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
23%
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
23%
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
23%
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...
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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
23%
Listing 4
21.08.2012
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Warewulf 4 Code
»
| 183 kB
00:00
(
12
/19): libselinux-2.0.94-5.2.el6.i686.rpm | 107 kB
00:00
(13/19): libthai-0.1.
12-3
.el6.i686.rpm
23%
Listing 2
21.08.2012
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Warewulf 4 Code
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| 78 kB
00:00
(
3
/5): libconfuse-2.6-
3
.el6.i686.rpm | 75 kB
00:00
(4/5): libuuid-2.17.2-
12
.4.el6.i686.rpm | 64 k
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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-> ../../devices/pci0000:
00/0000:00
:03.0/net/eth0 |---lo -> ../../devices/virtual/net/lo The device is no longer listed in the default namespace. Listing
3
Configuring Devices $ ip link set eth1
22%
Rethinking RAID (on Linux)
25.03.2021
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2021
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Issue 62: Lean...
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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
22%
Profiling Python code
30.01.2020
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2020
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Issue 55: AWS L...
»
and a truncated distance 243| 12475000| 50.5158| 4.04936e-06|
3
.04%| d =
0.0
244| 49900000| 209.465| 4.1977e-06|
12
.60%| for k in range(0, d_num): 245
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