Lot more swapping in stable/10 with ZFS

[Nagy, Attila]

On 01/28/14 17:33, Andriy Gapon wrote:
> on 28/01/2014 17:37 Volodymyr Kostyrko said the following:
>> 26.01.2014 12:06, Nagy, Attila wrote:
>>> Hi,
>>>
>>> Running stable/10 at r261157 (and earlier too), I've noticed that it swaps
>>> much more than previous (stable/9) versions.
>>> Current top output from such a machine:
>>> Mem: 251M Active, 21M Inact, 7491M Wired, 118M Cache, 17M Buf, 51M Free
>>> ARC: 5112M Total, 1455M MFU, 2155M MRU, 7761K Anon, 293M Header, 1223M
>>> Other
>>> Swap: 2045M Total, 757M Used, 1287M Free, 37% Inuse, 1280K Out
>> Just a +1 from me:
>>
>> Mem: 1440M Active, 412M Inact, 5889M Wired, 82M Cache, 90M Free
>> ARC: 3990M Total, 1981M MFU, 1505M MRU, 533K Anon, 79M Header, 424M Other
>> Swap: 8192M Total, 1434M Used, 6758M Free, 17% Inuse
>>
>> This machine is up for 1+03:13:06
>>
> Guys,
>
> could you please set sysctl vm.lowmem_period to zero (after a fresh reboot) and
> see if it makes any difference?
>
# sysctl -a | grep lowmem_period
vm.lowmem_period: 0
(set from sysctl.conf)
# uptime
  8:15AM  up  1:05, 1 user, load averages: 0.25, 0.29, 0.30
Mem: 468M Active, 127M Inact, 7168M Wired, 54M Cache, 16M Buf, 115M Free
ARC: 5835M Total, 4364M MFU, 789M MRU, 16K Anon, 150M Header, 536M Other
Swap: 2045M Total, 62M Used, 1983M Free, 3% Inuse, 1816K Out

So not really.