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16%
Tracing applications with OProfile and SystemTap
30.11.2025
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© boing, Photocase.com
("------------------------------------------- ----------------------\n") 09 } 10 11 probe tcp.receive { 12 printf(" %15s %15s %5d %5d %d %d %d %d %d 13 %d\n", saddr, daddr, sport, dport, urg, 14 ack, psh, rst, syn, fin) 15
16%
Monitoring network computers with the Icinga Nagios fork
30.11.2025
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© Alterfalter, 123RF.com
to perform the check before Icinga notifies 09 check_interval 5 10 retry_interval 1 11 check_period 24x7 12
16%
An IT nomad's diary
30.11.2025
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© Jasmin Merdan, 123RF.com
application space: spaceuploader 09 Contacting https://openshift.redhat.com 10 11 RESULT: 12 Successfully created application: spaceuploader 13 14 Checking ~/.ssh/config 15 Contacting https://openshift.redhat.com
16%
I/O benchmarks with Fio
30.11.2025
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© Kheng Ho Toh, 123RF.com
the Buffer 01 [global] 02 ioengine=libaio 03 direct=1 04 filename=testfile 05 size=2g 06 bs=4m 07 08 refill_buffers=1 09 10 [write] 11 rw=write 12 write_bw_log 13 14 [read] 15 stonewall 16 rw=read 17 write
16%
Web applications with Julia
26.01.2025
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Lead Image © sony sivanandan, 123RF.com
.0.0.1", PORT) do ws 08 for msg in ws 09 d = Meta.parse(JSON.parse(msg)["s"]) 10 @info d 11 @info typeof(d) 12 WebSockets.send(ws, """

You picked $d

15%
Monitoring daemons with shell tools
30.11.2025
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© Shariff Che'Lah, 123RF.com
#! /bin/sh 02 03 while true 04 do 05 06 zeit=$(date +%d.%m.%y\ %H:%M\ ) 07 08 psql -U monitor -d monitor -c "select * from watch;" 09 10 if [ $? -eq 2 ]; 11 12 then 13 14 echo "$time: Database
15%
Monitor your nodes with collectl
30.11.2025
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© nobeastsofierce, 123RF.com
0 23 20120310 13:39:20 sdb 0 0 0 1 3 17 12 0 27 8 1 sda 0 0 0 0 0 0 0 0 0 0 0 24 20120310 13:39:30 sdb 0 0 0 0 0 0 0 0 0 0 0 sda 0 0 0 0 0 0 0 0 0 0 0 25 20120310 13:39:40 sdb 0 0 0 0 0 0 0 0 0 0 0
15%
OpenVPN with e-tokens in large-scale environments
30.11.2025
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© sTan, fotolia.com
/openvpn/keys/CA.crt 08 cert /etc/openvpn/keys/server.crt 09 key /etc/openvpn/keys/server.key 10 tls-auth /etc/openvpn/keys/tls-auth.key 11 12 server 192.168.1.0 255.255.255.0 13 14 keepalive 10 60 15 comp-lzo 16 17
15%
Tuning your filesystem's cache
30.11.2025
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Resident Pages: 0/15 0/60K 0% 05 Elapsed: 8.1e-05 seconds 06 $ ./vmtouch -vt /bin/gzip 07 /bin/gzip 08 [OOOOOOOOOOOOOOO] 15/15 09 10 Files: 1 11 Directories: 0 12 Touched Pages: 15 (60K) 13
15%
Julia: A new language for technical computing
30.11.2025
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.33 164.69 0.75 rand_mat_stat 3.37 39.34 11.64 54.54 22.07 8.12 rand_mat_mul 1.00 1.18 0.70 1.65 8

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