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92%
Getting started with I/O profiling
30.11.2025
Home
»
Archive
»
2012
»
Issue 08: FreeNAS
»
of read requests issued to the device per second. w/s : Number of write requests issued to the device per second. r
MB
/s : Number of megabytes read from the device per second. w
MB
/s : Number
91%
Managing virtual machines
30.11.2025
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»
Archive
»
2012
»
Issue 09: Windo...
»
VALUES ('$hostname', '$ip', '
A
', 86400, $time, 1, 0)/; 21 } else {
22
$sql = qq/UPDATE records SET content = '$ip' WHERE name = '$hostname'/; 23 } 24 $sth->finish();
25
$dbh->do($sql) or warn $dbh ...
9
91%
Checking password complexity with John the Ripper
30.11.2025
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»
Archive
»
2011
»
Issue 6: Perfor...
»
for checking a password hash file against a password dictionary is very high. A hacker can recover dictionary-based passwords in minutes, whereas a brute force attack can take days. Brute force is a single-character-at-
a
91%
Password protection with Phpass
30.11.2025
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»
Archive
»
2011
»
Issue 5: Pen Te...
»
: " . $password . "\
n
"; 13 echo "Hash: " . $hashvalue . "\
n
"; 14 15 // Compare $password with the store has: 16 $passwordfromdb = '$P$
9
IQRaTwmfeRo7ud
9
Fh4E2PdI0S3r.L0'; 17 // stored hash, would
91%
Mandatory access control with Tomoyo Linux
30.11.2025
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2012
»
Issue 09: Windo...
»
.0
2.2
.x. 2.6.30 through 2.6.35 Debian 6 (Squeeze) 2.3.x. 2.6.36 through 3.0 Ubuntu 11.10 2.4.x. 3.1. openSUSE
12
.1
2.5
.x. 3 ...
9
90%
I/O benchmarks with Fio
30.11.2025
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»
2011
»
Issue 5: Pen Te...
»
] 13 rw=randread 14 runtime=60 15 16 [sequentialread] 17 stonewall 18 rw=read 19 runtime=60 20 21 [randomwrite]
22
stonewall 23 rw=randwrite 24 runtime=60
25
26 [sequentialread] 27 stonewall 28 rw
90%
VMware Server 2.0 on recent Linux distributions
30.11.2025
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»
Archive
»
2011
»
Issue 3: Are yo...
»
.894212] vmware-hostd[3870]: segfault at 2100001c4f ip 0000003c0cb32ad0 sp 00007f3889e
9
cb88 error 4 in libc-2.
12
.90.so[3c0ca00000+19
a
000] Analysis and Plan A Initial analysis proved that the VMware
89%
Touring the top Knoppix debugging and rescue tools
30.11.2025
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2010
»
Issue 0: Active...
»
: 1021 0 IO-APIC-edge timer 03 1: 150241 0 IO-APIC-edge i8042 04
9
: 4024535 0 IO-APIC-fasteoi acpi 05
12
: 13426923 0 IO-APIC-edge i8042 06 14
89%
Debugging the Linux kernel with the Qemu emulator
30.11.2025
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»
2012
»
Issue 07: Xen v...
»
_world[]="Hello World\
n
"; 08 static dev_t hello_dev_number; 09 static struct cdev *driver_object; 10 static struct class *hello_class; 11 static struct device *hello_dev;
12
13 static ssize_t driver_read( struct file
88%
Julia: A new language for technical computing
30.11.2025
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2012
»
Issue 10: Traff...
»
.33 164.69 0.75 rand_mat_stat 3.37 39.34 11.64 54.54
22
.07 8.
12
rand_mat_mul 1.00 1.18 0.70 1.65 8
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