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10%
Tuning your filesystem's cache
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
Resident Pages: 0/15 0/60K 0% 05 Elapsed: 8.1e-05 seconds 06 $ ./vmtouch -vt /bin/gzip 07 /bin/gzip 08 [OOOOOOOOOOOOOOO] 15/15 09 10 Files: 1 11 Directories: 0 12 Touched Pages: 15 (60K) 13
10%
A simple approach to the OCFS2 cluster filesystem
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Kheng Ho Toh, 123RF.com
of development, the programmers released version 1.0 of OCFS2, and it made its way into the vanilla kernel (2.6.16) just a year later. Version 1.2 became more widespread, with a great deal of support from various
10%
Monitoring your cluster with a home-grown OCF agent
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Aleksey Mnogosmyslov, 123RF.com
_NOT_RUNNING 08 fi 09 10 pid=`cat $ASTRUNDIR/asterisk.pid` 11 ocf_run kill -s 0 $pid 12 rc=$? 13 14 if [ $rc -eq 0 ]; then 15 if ocf_is_true "$OCF_RESKEY_realtime"; then 16
10%
Galera Cluster for MySQL
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Noel Powell, fotolia.com
to install the Pen load balancer, and Listing 12 shows a query to Pen. Listing 11 Installing and Starting Pen wget http://siag.nu/pub/pen/pen-0.18.0.tar.gz tar xf /download/pen-0.18.0.tar
10%
Even benchmarks can be easy to handle
30.11.2025
Home »  Archive  »  2012  »  Issue 08: FreeNAS  » 
stress --cpu 2 stress: info: [3855] dispatching hogs: 2 cpu, 0 io, 0 vm, 0 hdd ^C real 0m53.820s user 0m47.143s sys 0m0.000s This load is enough to take the program's share of the CPU to 98
10%
A standard cloud computing API
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
total = summary.values.inject(0) { |sum, i| sum += i } 12 puts "Found #{total} instances in the following states:" 13 summary.keys.sort.each do |s| 14 printf "%20s %d\n", s, summary[s] 15 end 16 puts
10%
Adapting VMware vSphere for state-of-the-art hardware
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© victoroancea, 123RF.com
01 $ ar -tv Adaptec_Inc_bootbank_scsi-aacraid_5.0.5.1.7.28700-1OEM.500.0.0.406165.vib 02 --------- 0/0 1356 Jan 1 01:00 1970 descriptor.xml 03 --------- 0/0 2122 Jan 1 01:00 1970 sig.pkcs7 04
10%
Creating an SFTP jail
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Juan Manuel Ordonez, 123RF.com
` ]]; then 078 mkdir ./`dirname $l` > /dev/null 079 fi 080 cp $l .$l 081 done 082 done 083 084 cd /export/home/jail/$JAILUSER/devices/pseudo 085 mknod mm@0:zero c 13 12 086 mknod mm@0:null c 13 2
10%
Using the Expect scripting environment
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Ivan Mikhaylov, 123RF.com
$spin 08 @$molecule.xyz 09 10 END 11 12 done 13 done The Gaussian 09 (g09) computational chemistry simulation package uses a small input that tells it what type of predictions are desired and which
10%
Managing virtual machines
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© Igor Klimov, 123RF.com
run the tool with the -a option, it creates the matching device mapper files: $ kpartx -l ff-clone7.img loop0p1 : 0 20969472 /dev/loop0 2048 $ kpartx -a ff-clone7.img $ kpartx -l ff-clone7.img loop0p1

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