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28%
Maatkit tools for database administrators
30.11.2025
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tiero, 123RF
sprzblog mysql limesurvey -uroot -ppassword > backup.sql will take 21 seconds to complete: real 0m21.626s user 0m0.000s sys 0m0.000s In the case of larger databases on non-replicated servers
28%
Beyond monitoring: Mathematical load simulation in Perl
30.11.2025
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© kudryashka, 123RF.com
Model"; 11 $work = "ebiz-tx"; 12 $node1 = "WebServer"; 13 $node2 = "AppServer"; 14 $node3 = "DBMServer"; 15 $think = 0.0 * 1e-3; # as per test system 16 $dtime = 2.2 * 1e-3; # dummy service time 17 18
28%
Reading and understanding database execution plans
31.10.2025
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© Gunnar Pippel, 123RF.com
----------------------------------------------------------------- 21 22 Predicate Information (identified by operation id): 23 --------------------------------------------------- 24 1 - access("S"."EMPLOYEE_ID"="E"."EMPLOYEE_ID") 25 2 - filter<+>5<+>( "S
28%
Managing virtual machines
30.11.2025
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© Igor Klimov, 123RF.com
/sysconfig/network-scripts/ifcfg-eth0-e "s///" You need a similar approach with the Udev rules mentioned earlier. In this way, you can also replace the hostname so that it matches the name assigned during
27%
I/O benchmarks with Fio
30.11.2025
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© Kheng Ho Toh, 123RF.com
/0K /s] [4137 /0 iops] [eta 00m:06s] In the example, the first job is performing a sequential read, marked as r in square brackets, while Fio hasn't initialized the second job, marked as P
27%
Debugging the Linux kernel with the Qemu emulator
30.11.2025
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© Daniela Mangiuca, 123RF.com
. The following command tells the system the hex address of the code segment and the two data segments: add-symbol-file path/hello.ko 0xd8817000 -s .data 0xd88170e0 -s .bss 0xd8817294 Now you can set a breakpoint
27%
Tracing applications with OProfile and SystemTap
30.11.2025
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© boing, Photocase.com
: all cores 0x40: core: this core 0x30: prefetch: all inclusive 0x10: prefetch: Hardware prefetch only 0x00: prefetch: exclude hardware prefetch 0x08: (M)ESI: Modified 0x04: M
27%
Overview of cloud platforms and appliances
30.11.2025
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Athiphan Chunmano, 123RF
, Hybrids, Software as a Service (SaaS), Platform as a Service (PaaS) – the list goes on and on. In this article, we will attempt to peek through the mist of terminology and provide readers
27%
Configuring the JBoss application server
30.11.2025
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HONGQI ZHANG, 123RF.com
procedure took (Listing 2). Listing 2 Startup Status 01 19:58:19,965 INFO [ServerImpl] JBoss (Microcontainer) [5.1.0.GA (build:SVNTag=JBoss_5_1_0_GA date=200905221634)] Started in 54s:991ms
27%
Server virtualization with Citrix XenServer
30.11.2025
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Goss Vitalij, Fotolia
between Citrix and Microsoft is demonstrated by the availability of graphical management tools. Basic management tasks on the host system (Dom0 ) can be handled using the Curses-based xcconsole and the xe

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