Bytes allocated statistic for T10858 differs between Windows and Linux

Strangely T10858 seems to pass without any trouble on 64-bit Linux with its current expected "bytes allocated" statistic of 241MB. Strangely, this test allocates 16% less on 64-bit Windows,

bytes allocated value is too low:
(If this is because you have improved GHC, please
update the test so that GHC doesn't regress again)
    Expected    T10858(normal) bytes allocated: 241655120 +/-8%
    Lower bound T10858(normal) bytes allocated: 222322710 
    Upper bound T10858(normal) bytes allocated: 260987530 
    Actual      T10858(normal) bytes allocated: 203567896 
    Deviation   T10858(normal) bytes allocated:     -15.8 %
*** unexpected stat test failure for T10858(normal)

Trac metadata

Trac field	Value
Version	8.0.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Test Suite
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system	Unknown/Multiple
Architecture	Unknown/Multiple