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Maatkit tools for database administrators

30.11.2025

Home » Archive » 2010 » Issue 2: Backup... »

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

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Beyond monitoring: Mathematical load simulation in Perl

30.11.2025

Home » Archive » 2011 » Issue 6: Perfor... »

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

Home » Archive » 2012 » Issue 12: NAS S... »

----------------------------------------------------------------- 21 22 Predicate Information (identified by operation id): 23 --------------------------------------------------- 24 1 - access("S"."EMPLOYEE_ID"="E"."EMPLOYEE_ID") 25 2 - filter<+>5<+>( "S

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Managing FOSS applications on AIX

27.05.2025

Home » Archive » 2025 » Issue 87: Light... »

Lead Image © Nataliia Natykach, 123RF.com

is running (Listing 18). Listing 18 Checking mysqld # ps -ef | grep mysqld mysql 8323484 18219314 0 21:39:57 pts/1 0:00 /opt/freeware/libexec/mysqld --basedir=/opt/freeware --datadir

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Managing virtual machines

30.11.2025

Home » Archive » 2012 » Issue 09: Windo... »

/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

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I/O benchmarks with Fio

30.11.2025

Home » Archive » 2011 » Issue 5: Pen Te... »

/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

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Debugging the Linux kernel with the Qemu emulator

30.11.2025

Home » Archive » 2012 » Issue 07: Xen v... »

. 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

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Tracing applications with OProfile and SystemTap

30.11.2025

Home » Archive » 2010 » Issue 1: System... »

: 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

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Overview of cloud platforms and appliances

30.11.2025

Home » Archive » 2010 » Issue 2: Backup... »

, 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

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Configuring the JBoss application server

30.11.2025

Home » Archive » 2011 » Issue 4: Secure... »

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

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