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9%
Getting started with I/O profiling
30.11.2025
Home »  Archive  »  2012  »  Issue 08: FreeNAS  » 
© Photosani, Fotolia.com
nodes. Blktrace can be a very useful tool because it also allows you to compute IOPS (I think it's only "Total IOPS"). Also, a tool called Seekwatcher [7] can be used to plot results from blktrace
9%
High-availability workshop: GFS with DRBD and Pacemaker
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Maxim Borovkov, 123RF.com
for a good reason: They make memory space manageable. Without a filesystem, it would be difficult to find data that you write to the storage medium when you need it. The filesystem structure makes it possible ... 7
9%
The logging module in Python
30.11.2025
Home »  Archive  »  2012  »  Issue 08: FreeNAS  » 
© svl861, 123RF.com
versions below 2.7.1 or 3, if you are using threads. Under unfavorable circumstances, handlers could be created twice. Handlers To route output into a specific channel, you need a handler. With Stream
9%
Beyond monitoring: Mathematical load simulation in Perl
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© kudryashka, 123RF.com
as that under the monitored data curve over the same 24-hour period. An analogous relationship also holds if the waiting is excluded from the residence time (R ) in Equation (2) to get Equation (3
9%
Introduction to LVM
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Dvarg, 123RF.com
status of a volume of data. Infos LVM how-to: http://www.tldp.org/HOWTO/LVM-HOWTO LVM mailing list: http://www.redhat.com/mailman/listinfo/linux-lvm ... 7
9%
Debugging the Linux kernel with the Qemu emulator
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Daniela Mangiuca, 123RF.com
:add-symbol-file module.ko text_address -s .data data_address -s .bss bss_address 9. Debug: Set breakpoints and so on. In Toolchain , enable the Build gdb for the Host option; in Kernel | Kernel version , type 3 ... 7
9%
Professional backup solutions compared
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
Kamil Macniak, 123RF
, deduplication reduces the sheer volume of data by identifying identical blocks of data and backing them up once only; all other instances of the same data block are simply referenced by pointers. Depending
9%
Storage system with OpenSolaris and Comstar
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Aleksandr Fomenkov, 123RF.com
: mypool 12 state: ONLINE 13 scrub: none requested 14 config: 15 NAME STATE READ WRITE CKSUM 16 mypool ONLINE 0 0 0 17 c8t1d0 ONLINE 0 0 0 18 errors: No known data errors On top of this, you can expect
9%
Galera Cluster for MySQL
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Noel Powell, fotolia.com
.g., inconsistent snapshots on the master, or setting the wrong binary log position after insertion), this could quickly cause data inconsistencies between the master and slave. In the old, so-called statement
8%
Virtualization with KVM
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
on the virtual machines that Qemu provides without fighting over the physical network interface (Figure 1). Figure 1: Thanks to KVM, Windows 7 and openSUSE 11.3

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