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33%
Getting started with I/O profiling
30.11.2025
Home »  Archive  »  2012  »  Issue 08: FreeNAS  » 
© Photosani, Fotolia.com
62 787 10MB < < 100MB 0 0 0 0 0 0 0 2 Table 4 from the MPI strace Analyzer report; all-zero rows for sizes >100MB
32%
RAM revealed
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© KrishnaKumar Sivaraman, 123RF.com
240 240 Still unknown Operating voltage (V) 2.5 1.8 1.5 (DDR3L: 1.35; DDR3U: 1.25) 1.2 Chip (I/O clock frequency, MHz) DDR-200 (100)DDR-266
32%
Demystified: The facts about green IT
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Iakov Kalinin, 123RF
1 1 0 Backup 50 1 1 1 Network printer 100 1 0 0 File server 50 1 1 0
31%
The fine art of allocating memory
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
presence provides the system with a last chance for a soft landing before more drastic action is taken. This month, I examine the darker side of the picture: Swap hits 100%, and hard out-of-memory errors
31%
Cgroups for resource management in Linux
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© Photographer, 123RF.com
cgroup, which has no restrictions. You can test this by sending a SIGUSR1 to the process: # kill -USR1 $pid 578804+0 records in 578804+0 records out 296347648 bytes (296 MB) copied, 7.00803 s, 42.3 MB
30%
Overview of cloud platforms and appliances
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
Athiphan Chunmano, 123RF
Cloud Index (AMCI) evaluates 10 differently weighted features of commercial public clouds. In the AMCI, Amazon's Web Services (EC2, S3, and CloudFront) serve as the baseline, with an index value of 100
30%
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
30%
Linux filesystem performance tested
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© nyul, 123rf.com
appliance (see the "Test Hardware" box) with eight fast disks in a RAID level 0 array with a stripe size of 64KB. The RAID is divided into an SSD array and an HDD array with identical partitions on both
29%
Fast system management from Puppet Labs
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Artmann Witte, fotolia.com
45 46 47 48 49 50 51 52
29%
Checking password complexity with John the Ripper
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
$ john -wordlist:password.lst passfile.txt 02 Loaded 2 passwords with 2 different salts (FreeBSD MD5 [32/64]) 03 admin (root) 04 t-bone (khess) 05 guesses: 2 time: 0:00:00:00 100% c

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