Searched hist:"64949 baa" (Results 1 – 2 of 2) sorted by relevance
| /dragonfly/sys/vm/ |
| H A D | vm_swapcache.c | 64949baa Tue Jan 03 05:25:47 GMT 2012 Matthew Dillon <dillon@apollo.backplane.com> kernel - Fix swapcache inefficiency related to the PQ_INACTIVE queue
* The swapcache was still coded with the assumption of just one
PQ_INACTIVE queue. Even though it scans all 256 queues the
end-of-queue code could trigger early and prevent later queue
indices from being scanned, causing a large percentage of eligible
VM pages to not get written to the swapcache.
Now all queues must signal that they have reached the end before the
code sets the end-of-queue condition and loops up to the 1/10 second
sleep.
* The full count/scount was being applied to each queue individually instead
of to all queues uniformly, allowing more pages to be laundered than
desired. Divide out and add a bit of slop.
|
| H A D | vm_pageout.c | 64949baa Tue Jan 03 05:25:47 GMT 2012 Matthew Dillon <dillon@apollo.backplane.com> kernel - Fix swapcache inefficiency related to the PQ_INACTIVE queue
* The swapcache was still coded with the assumption of just one
PQ_INACTIVE queue. Even though it scans all 256 queues the
end-of-queue code could trigger early and prevent later queue
indices from being scanned, causing a large percentage of eligible
VM pages to not get written to the swapcache.
Now all queues must signal that they have reached the end before the
code sets the end-of-queue condition and loops up to the 1/10 second
sleep.
* The full count/scount was being applied to each queue individually instead
of to all queues uniformly, allowing more pages to be laundered than
desired. Divide out and add a bit of slop.
|