>c'est la VM d'Andrea, pour laquelle tu es prié de filer au moins 2x la quantite de RAM sinon pas sur qu'il puisse swapper les pages comme il veut, alors qu'avant c'etait pas le cas (kernel 2.2)
"About that swapping problem. Problems with the use of swap space in 2.4.x were also mentioned last week. The amount of complaining has gone up recently, as more people try out the 2.4.5 kernel, which appears to be worse.
The response from the kernel hackers so far has been "make sure your swap area is at least twice as large as the amount of RAM in the system." That allows the kernel, essentially, to waste half of the swap space as a copy of what is currently in RAM, and actually swap to the other half. That technique helps, but a number of people are, not surprisingly, unimpressed with that requirement. 2.2 systems seemed to work better, after all. In fact, 2.2 had the same problem with swapping, but the more aggressive approach to caching in 2.4 has made the problem bite a lot more people."
[^] # N'importe quoi!!!!!
Posté par oliv . En réponse à la dépêche Gestion de la mémoire virtuelle du noyau 2.5.x. Évalué à 10.
Complètement faux!!!!
je dois te rafraîchir la mémoire avec quelques liens:
http://old.lwn.net/2001/0607/kernel.php3(...)
A cette date, le kernel est le 2.4.5
"About that swapping problem. Problems with the use of swap space in 2.4.x were also mentioned last week. The amount of complaining has gone up recently, as more people try out the 2.4.5 kernel, which appears to be worse.
The response from the kernel hackers so far has been "make sure your swap area is at least twice as large as the amount of RAM in the system." That allows the kernel, essentially, to waste half of the swap space as a copy of what is currently in RAM, and actually swap to the other half. That technique helps, but a number of people are, not surprisingly, unimpressed with that requirement. 2.2 systems seemed to work better, after all. In fact, 2.2 had the same problem with swapping, but the more aggressive approach to caching in 2.4 has made the problem bite a lot more people."
Et cette série d'emails sur la liste de diffusion du Kernel:
http://www.uwsg.iu.edu/hypermail/linux/kernel/0203.0/0556.html(...)
http://www.uwsg.iu.edu/hypermail/linux/kernel/0203.0/0482.html(...)
http://www.uwsg.iu.edu/hypermail/linux/kernel/0203.0/0458.html(...)
Où tu apprendras que la limite qui était dans la VM de rik a été levée avec le 2.4.8
Je sais pas si le plus ennuyeux, c'est de lire de telles bévues, ou bien de voir que ce genre de mail est scoré + !