Linux version 2.6.32-573.7.1.el6.x86_64 (mockbuild@x86-031.build.eng.bos.redhat.com) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-16) (GCC) ) #1 SMP

vm.dirty_background_ratio = 10
vm.dirty_background_bytes = 0
vm.dirty_ratio = 20
vm.dirty_bytes = 0
vm.dirty_writeback_centisecs = 500
vm.dirty_expire_centisecs = 3000


On Oct 26, 2015, at 1:31 PM, Massimo.Sala@asl.bergamo.it wrote:

Johnson, Edward A. :
       Turned out to be a balance issue between the number of pollers,
the vm.dirty_background_ratio, and the vm.dirty_ratio.


If I recollect, many distro come "teaked" for end-users, so with both
values too high with plenty of RAM servers.


Usually on servers that aren't file server, I set :

       vm.dirty_background_bytes=67108864
       vm.dirty_ratio=10



Edward, can you specify your sysctl values, kernel, distro that are not so
good for that server ?

There are many different configs, I think it is useful to report the
"guts" of the problem.

best regards, Sala

_______________________________________________
observium mailing list
observium@observium.org
http://postman.memetic.org/cgi-bin/mailman/listinfo/observium