System Administration Calculators
20 free system administration calculators in Linux.
- APT Cache CalculatorCalculate disk space consumed by the APT package cache and downloaded .deb archives.
- Boot Time CalculatorBreak down system boot time across firmware, kernel and systemd unit startup phases.
- Journalctl Disk Usage CalculatorCalculate systemd journal disk usage against SystemMaxUse and runtime journal limits.
- Kernel Log Size CalculatorCalculate dmesg kernel ring buffer size and message retention capacity.
- Kernel Parameter CalculatorCalculate recommended sysctl kernel parameter values for a given workload profile.
- Kernel Thread CalculatorCalculate the number of kernel threads spawned per CPU core for common kernel subsystems.
- Linux Server Health Score CalculatorCalculate an overall server health score from CPU, memory, disk and service uptime metrics.
- Log Growth CalculatorEstimate application log directory growth rate and days until disk capacity is reached.
- Module Dependency CalculatorCalculate kernel module load order and dependency depth from modinfo dependency chains.
- Package Dependency CalculatorCalculate total download size and install order for a package and its dependency tree.
- Package Size CalculatorEstimate installed size versus download size for a software package and its dependencies.
- Patch Window CalculatorCalculate the maintenance window duration needed to patch a fleet of servers safely.
- Reboot Duration CalculatorEstimate total server downtime from shutdown, POST, kernel boot and service startup phases.
- Repository Mirror CalculatorCalculate storage and bandwidth needed to host a local mirror of a package repository.
- Server Consolidation CalculatorCalculate how many physical servers can be consolidated into virtual machines or containers.
- Service Availability CalculatorCalculate service uptime percentage and allowed downtime budget for an SLA target.
- Syslog Storage CalculatorCalculate storage required for centralized syslog collection from a fleet of hosts.
- System Capacity PlannerPlan overall CPU, memory and storage capacity needed to support projected system growth.
- Update Time EstimatorEstimate total time to download and install a batch of system package updates.
- YUM DNF Cache CalculatorCalculate disk space consumed by the YUM or DNF package manager metadata and RPM cache.