Memory Calculators

20 free memory calculators in Linux.

Buffer Cache CalculatorEstimate buffer cache size used for block device I/O buffering on Linux systems.
Heap Size CalculatorCalculate recommended heap size for a process based on workload and object allocation rate.
HugePages CalculatorCalculate the number of HugePages needed to back a given amount of application memory.
Kernel Memory CalculatorEstimate kernel memory footprint including slab allocations and kernel structures.
Memory Fragmentation CalculatorEstimate memory fragmentation percentage from free memory chunk size distribution.
Memory Growth ForecastForecast future memory consumption from historical usage trend and growth rate.
Memory Leak EstimatorEstimate time until out-of-memory based on observed process memory leak rate.
Memory Utilization CalculatorCalculate overall memory utilization percentage across physical RAM and swap.
NUMA Memory PlannerPlan memory allocation across NUMA nodes to minimize remote memory access latency.
OOM Killer Threshold CalculatorCalculate the memory threshold at which the Linux OOM killer is likely to trigger.
Page Cache CalculatorCalculate the portion of RAM used as page cache and its effect on available memory.
Page Table Size CalculatorCalculate page table memory overhead based on page size and mapped address space.
Process Memory CalculatorCalculate total memory footprint of a process from RSS, shared and private memory.
RAM Usage CalculatorCalculate used, free and cached RAM percentages from free command output values.
RSS CalculatorCalculate a process's Resident Set Size and its share of total physical memory.
Shared Memory CalculatorCalculate System V or POSIX shared memory segment size requirements for applications.
Stack Size CalculatorCalculate thread stack size requirements and total stack memory for multi-threaded processes.
Swap Utilization CalculatorCalculate swap space usage percentage and estimate performance impact of swapping.
Virtual Memory CalculatorCalculate virtual address space size and mapping requirements for a process.
VSZ CalculatorCalculate a process's Virtual Size including mapped, reserved and unused address space.