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27%
The practical benefits of network namespaces
15.08.2016
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»
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»
2016
»
Issue 34: Softw...
»
ns2 10 $ ip netns exec ns2 ip link 11 1: lo:
mtu 65536 qdisc noop state DOWN mode DEFAULT group default
12
link/loopback
00:00:00:00:00:00
brd
00:00:00:00:00:00
13 2: veth2:
27%
Rethinking RAID (on Linux)
25.03.2021
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2021
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Issue 62: Lean...
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0[0
] 2094080 blocks super
1.2
[
2/2
] [UU] ** unused devices:
The initialization time should be relatively quick here. Also, verify the RAID1 mirror details (Listing 13) and rerun the random
26%
Greylisting with Postgrey
22.06.2012
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1-
12:00:00
20
144400 1-16:06:40 21 160000 1-
20
:26:40
22
176400 2-01:
00:00
23 193600 2-05:46:40 24
25%
Understanding the Status of Your Filesystem
18.06.2014
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( 0.05%) ( 0.05% cumulative) [
1- 2
days]: 0 ( 0.
00
%) ( 0.05% cumulative) [ 2- 4 days]: 4675 ( 1.
20
%) ( 1.25% cumulative) [ 4- 7 days]: 215 ( 0.06%) ( 1.31% cumulative) [ 7
25%
Processor and Memory Metrics
12.02.2014
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: 99.0% iowait:
0.0
% irq:
0.0
% softirq:
0.0
% steal:
0.0
% guest:
0.0
% CPU0 user: 4.0% nice:
0.0
% system:
2.0
% idle: 94.0% iowait:
0.0
% irq:
0.0
25%
Using a Bash script to mirror external monitors
10.06.2015
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2015
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Issue 27: Fault...
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" ; shift
20
local display_list="$1" 21 while read display width_
mm
height_
mm
width height ; do
22
if [[ "$display" == "$find_display" ]] ; then 23 echo ${width}
x
${height} 24
25%
Warewulf Cluster Manager – Master and Compute Nodes
22.05.2012
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86_64 0:1.9-
22
.el6_2.1 libacl.
x
86_64 0:2.2.49-6.el6 libattr.
x
86_64 0:2.4.44-7.el6 libblkid.
x
86_64 0:2.17.2-
12
.4.el6 libcap.
x
86_64 0
25%
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 _
x
86_64_ (2 CPU)
12
:05:01 CPU %user %nice %system %iowait %steal %idle
12
25%
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 _
x
86_64_ (2 CPU)
12
:05:01 CPU %user %nice %system
24%
Speed up your MySQL database
11.02.2016
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Issue 31: Tunin...
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19
20
mysql> CREATE TABLE `data_random` ( 21 `id` CHAR(32) NOT NULL,
22
`data` VARCHAR(64) DEFAULT NULL, 23 `ts` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, 24
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