Messages in this thread |  | | Date | Thu, 16 Apr 2015 12:00:07 -0400 | From | Rik van Riel <> | Subject | Re: [PATCH 3/4] mm: Gather more PFNs before sending a TLB to flush unmapped pages |
| |
On 04/16/2015 06:22 AM, Mel Gorman wrote: > The patch "mm: Send a single IPI to TLB flush multiple pages when unmapping" > would batch 32 pages before sending an IPI. This patch increases the size of > the data structure to hold a pages worth of PFNs before sending an IPI. This > is a trade-off between memory usage and reducing IPIS sent. In the ideal > case where multiple processes are reading large mapped files, this patch > reduces interrupts/second from roughly 180K per second to 60K per second. > > Signed-off-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Rik van Riel <riel@redhat.com>
|  |