Maximum scale factor of PCP (Per-CPU pageset) batch allocate/free
configname: CONFIG_PCP_BATCH_SCALE_MAX
Linux Kernel Configuration
└─>Memory Management options
└─>Maximum scale factor of PCP (Per-CPU pageset) batch allocate/free
In linux kernel since version 4.14.330 (release Date: 2023-11-20)
In page allocator, PCP (Per-CPU pageset) is refilled and drained in
batches. The batch number is scaled automatically to improve page
allocation/free throughput. But too large scale factor may hurt
latency. This option sets the upper limit of scale factor to limit
the maximum latency.
batches. The batch number is scaled automatically to improve page
allocation/free throughput. But too large scale factor may hurt
latency. This option sets the upper limit of scale factor to limit
the maximum latency.