Fragmentation de la mémoire.
Very often used in the context of memory analysis of servers.
One of the statuses you would look for is the memory breakup. The OS (mostly linux based, in the case of servers) will leak memory and not always optimize the structure of the memory. If you break up is high, you may defragment the memory like you would do for a hard disk

"What metrics do I get per Linux server monitor? - Site24x7
https://support.site24x7.com/portal/kb/.../what-metrics-do-i...
Memory Break up: Free Physical Memory (MB). Free Swap Memory (MB). Process Stats. Avg Blocked Process (Count). Average Disk Utilization (%): Current Individual Disk Utilization (%). Individual Disk Utilization (%). Disk(I/O). Disk Partition Details (used and free). Top Process by CPU and Top Process ..."

"analyse de la mémoire RAM SWAP - Bienvenu sur le site admin-sys
http://www.admin-sys.org/analyse-de-la-memoire-ram-swap
Connaitre la taille de la mémoire physique / RAM. #prtconf | grep -i "memory size" Memory size : 8064 Megabytes. Connaître l'utilisation de la mémoire : La commande : echo '::memstat' | mdb -k permet de connaitre l'utilisation de la mémoire (attention, cela mais du temps pour son exécution). #echo '::memstat' | mdb -k"

"memory breakup
" Hi, How can I get the memory break up in a solaris8 server. Like: kernel,applications,users etc. I have a solris server running Oracle database in client server mode. clients are all NT wks. Around 400MB is allotted to oracle . I have total 1GB memory . But from vmstat I see around 15M free only. No other applications are running. "
https://it.toolbox.com/question/memory-breakup-112801

"Mesurer la consommation mémoire avec free et vmstat - Somewhere ...
http://a.michelizza.free.fr/pmwiki.php?n=Main.TutoAdminMemor...
La deuxième ligne indique la quantité de mémoire réellement consommée par les applications (colonne used ) et la mémoire réellement disponible (colonne free ) : -/+ buffers/cache: .... Le graphe d'utilisation de la mémoire du serveur permet de mettre facilement en évidence l'existence d'un memory leak."

fragmentation = framentation EN

"As processes are loaded and removed from memory, the free memory space is broken into little pieces. It happens after sometimes that processes cannot be allocated to memory blocks considering their small size and memory blocks remains unused. This problem is known as Fragmentation.
Operating System Memory Management - TutorialsPoint
https://www.tutorialspoint.com/operating_system/os_memory_ma...


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Note added at 23 hrs (2018-01-25 10:57:15 GMT)
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un autre exemple on ne peut plus clair :

"Memory Breakup
Hi Guys,
I have a simple & straight-forward question. If my physical memory is 3500MB and I want to see how the breakup of memory is can I use UNIX95 command and take a total of vsz field?

If done so , I am getting total as 6500MB where is the physical mem of server is 3500MB, can anybody suggest how to derive a breakup of the physcial memory in use per process?
Obstacles exist to challenge you to keep going. Not to quit.

Mémoire vidéo

Comment puis-je obtenir la résolution de la mémoire dans un serveur Solaris8? Comme noyau, applications, utilisateurs, etc.

A partir de quel résolution 1Go de mémoire vidéo est elle intéressante, on voit un petit gain en 1920x1200 qu'en est t'il au dessus?