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46%
Tracing applications with OProfile and SystemTap
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© boing, Photocase.com
confirm that the kernel and kernel-debuginfo packages have the same version number: rpm -q kernel-PAE kernel-PAE-debuginfo oprofilekernel-PAE-2.6.32.10-90.fc12.i686 kernel-PAE-debuginfo-2.6.32.10-90.fc12.i
46%
The fine art of allocating memory
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
irrespective of actual system capacity, because the memory is only being allocated, not used. It will then run into the limits of process address space, hitting a wall at 3056MB of allocation; the maximum
46%
Maatkit tools for database administrators
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
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
45%
Beyond monitoring: Mathematical load simulation in Perl
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© kudryashka, 123RF.com
see immediately that, if you have a small number of shoppers, the time required to pass through checkout (the residence time) is identical to the service time. If no other shoppers arrive (lambda = 0
45%
Professional backup solutions compared
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
Kamil Macniak, 123RF
. In most cases, 90 percent of a full backup will be identical to the previous full backup, so the full backup does not need to be sent to the backup server again. Instead, the backup server creates a backup
45%
Storage system with OpenSolaris and Comstar
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Aleksandr Fomenkov, 123RF.com
su # echo 192.168.1.200 > /etc/hostname.e1000g0 In this example, e1000g0 is the primary network interface. The following command lists the network interfaces: # ifconfig -a You have to add ... 0
45%
Virtualization with KVM
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
than 0 (Figure 3). If not, either the processor doesn't support the special commands, or the commands have been disabled in the computer's BIOS. Users with Intel processors can additionally check
45%
An IT nomad's diary
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© 2012 Apple Inc.
: plug another memory leak 05 c90fc4c934ac7b024c1fc1813bb3cffb5333e18f lockdown: move writing of device uuid to client struct inside lockdownd_client_new() 06 f0487376671ffd6ac3fc121657f1fbd0acea3cb0
45%
Network backup with Burp, Obnam, and Backshift
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Sergey Peterman, 123RF.com
can exclude files of a certain size (e.g., those of 0MB). The Burp configuration language also provides two size parameters: min_file_size and max_file_size; for example: min_file_size = 0 Mb
45%
Introduction to LVM
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Dvarg, 123RF.com
this writes an LVM label and some metadata to the PV. The PV is divided up into units of the same size (4MB by default) known as physical extents (PEs). A PE is the smallest allocatable data volume. Figure 1

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