PAE kernel memory limit

 
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Operating Systems Linux Red Hat PAE kernel memory limit
# 1  
Old 08-22-2013
PAE kernel memory limit

What is the limit of LowMem and HighMem in PAE enable kernel.
# 2  
Old 08-22-2013
For modern 32-bit PAE Linux kernels - HIGHMEM is 64Gb, LOWMEM varies with amount of memory you have.
# 3  
Old 08-23-2013
The more highmem exists the more memory pressure can be expected in lowmem.
This will result in sudden short-living performance decrease or memory initializing failures.
With SuSE kernels the OOM killer will be invoked before total memory isused up.
For more than 8 GB RAM use a 64 bit kernel!
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