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34%
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
32%
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
31%
Using a Bash script to mirror external monitors
10.06.2015
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2015
»
Issue 27: Fault...
»
" ; 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
31%
The practical benefits of network namespaces
15.08.2016
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2016
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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:
30%
Rethinking RAID (on Linux)
25.03.2021
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2021
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Issue 62: Lean...
»
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
30%
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
29%
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
29%
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
29%
Protect Your Servers with Nmap
23.07.2012
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.13.134.52): Not shown: 994 filtered ports PORT STATE SERVICE VERSION
22
/tcp open ssh OpenSSH 4.3 (protocol
2.0
) 25/tcp closed smtp 53/tcp open domain ISC BIND 9
29%
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
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