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45%
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
43%
Listing 5
21.08.2012
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Warewulf 4 Code
»
.1 M Total download size:
3
.9 M Installed size: 18 M Is this ok [y/N]: y Downloading Packages: (1/4): php-5.
3.3
-14.el6_
3
.x86_64.rpm | 1.1
MB
00:00
(2/4): php-cli-5.
3.3
42%
Listing 1
21.08.2012
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Warewulf 4 Code
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|
3
.5 kB
00:00
elrepo | 1.9 kB
00:00
elrepo
42%
Rethinking RAID (on Linux)
16.03.2021
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MiB 2144.34
MB
) Used Dev Size : 2094080 (2045.
00
MiB 2144.34
MB
) Raid Devices :
3
Total Devices :
3
Persistence : Superblock is persistent Update Time : Sat Jan 9 16
39%
Rethinking RAID (on Linux)
25.03.2021
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2021
»
Issue 62: Lean...
»
=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
38%
A closer look at hard drives
18.07.2013
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2013
»
Issue 15: What’...
»
buffered disk reads: 616
MB
in
3.00
seconds = 205.03
MB
/sec $ hdparm -T /dev/sda /dev/sda: Timing cached reads: 6292
MB
in
2.00
seconds = 3153.09
MB
/sec If this were a spinning disk, you would also
37%
Listing 2
01.08.2012
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Warewulf Cluste...
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Warewulf 3 Code
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| 358 kB
00:00
(4/12): hwloc-1.1-0.1.el6.x86_64.rpm | 1.0
MB
00:00
(5/12): libX11-1.
3
-2.el6.x86_64.rpm ... Warewulf
3
Listing 2
35%
Monitoring Storage with iostat
25.02.2013
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0.
00
01/31/2013 09:56:03 AM avg-cpu: %user %nice %system %iowait %steal %idle 6.
00
0.
00
2.00
0.50 0.
00
91.50 Device: rrqm/s wrqm/s r/s w/s r
MB
35%
Distributed storage with Sheepdog
07.10.2014
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2014
»
Issue 23: 10 Ti...
»
(Listing
3
). Listing
3
Defining Replication Factors 01 # dog vdi list 02 Name Id Size Used Shared Creation time VDI id Copies Tag 03 one.img 0 4.0
MB
0.0
MB
0.0
35%
Security first with the Hiawatha web server
11.04.2016
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2016
»
Issue 32: Measu...
»
network adapters, one for administration and one for the web server. I gave the system 1GB memory, but it has not yet used more than
200
MB
. Then, boot the image. You have several choices: Add
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