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Creation time
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16%
Monitor your nodes with collectl
30.11.2025
Home
»
Archive
»
2012
»
Issue 09: Windo...
»
:40:10 sdb 136 93 6483 2 8 40 47 2 17 7
90
sda 0 0 0 0 0 0 0 0 0 0 0 29 20120310 13:40:20 sdb 60 69 2200 2 11 52 36 2 30
6
37 sda 0 0 0 0 0 0 0 0 0 0 0 30 20120310 13:40:30 sdb 2 0 16 7 37 175 21 1 59
6
5 sda
15%
Get the best out of your bandwidth with tc
30.11.2025
Home
»
Archive
»
2012
»
Issue 10: Traff...
»
bandwidth measurements as follows: Kilobytes are written as k or kb. Megabytes are written as m or
mb
. However, I'm more comfortable using kilobits and megabits. These terms are notated
15%
Tracing applications with OProfile and SystemTap
30.11.2025
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»
Archive
»
2010
»
Issue 1: System...
»
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
.fc
12
.i686 kernel-PAE-debuginfo-2.
6.32.10-90
.fc
12
.i
15%
The fine art of allocating memory
30.11.2025
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»
Archive
»
2012
»
Issue 10: Traff...
»
); i+= 4096) newblock[i] = 'Y';
12
printf("Allocated %d
MB
\n", allocation); 13 } 14 } Things are more interesting when memory is being used. Uncommenting line 11 does just that. The OOM
15%
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
15%
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 00007f3889e9cb88 error 4 in libc-2.
12.90
.so[3c0ca00000+19a000] Analysis and Plan A Initial analysis proved that the VMware
15%
An IT nomad's diary
30.11.2025
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»
Archive
»
2012
»
Issue 07: Xen v...
»
: plug another memory leak 05 c
90
fc4c934ac7b024c1fc1813bb3cffb5333e18f lockdown: move writing of device uuid to client struct inside lockdownd_client_new() 06 f0487376671ffd
6
ac3fc121657f1fbd0acea3cb0
15%
An IT nomad's diary
30.11.2025
Home
»
Archive
»
2011
»
Issue 5: Pen Te...
»
is MySQL or SQLite. 128
MB
disk space and 256
MB
RAM are the available hardware resources in a shared-hosting environment. If you need more, you have to upgrade to the Flex level, which means having
15%
A Btrfs field test and workshop
31.10.2025
Home
»
Archive
»
2012
»
Issue 11: Cloud...
»
, followed by an installation guide using a virtual instance of Ubuntu
12
.04 as an example. Then, I'll demonstrate the main administration tool. Following this, the root filesystem on a test system
15%
Pogocache In-Memory Database
06.08.2026
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Archive
»
2026
»
Issue 94 OpenSt...
»
to see whether Pogocache could outperform Memcached in other environments. To find out, I ran memtier_benchmark on Pogocache
1.2
and Memcached 1.
6
.37. On an Intel machine that was about two and a half
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