Knowledgebase

Understanding Hosting Resource Limits — CPU, RAM and Inodes Print

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Why Limits Exist

Shared hosting keeps costs low because many customers share one powerful server. Resource limits make that fair: no single account can slow everyone else down. Understanding your limits helps you diagnose slowness and know when it is genuinely time to upgrade.

The Limits That Matter

  • CPU. How much processor time your scripts may use. Hitting the CPU limit makes pages queue and load slowly during the spike.
  • RAM, called physical memory. Memory available to your PHP processes. Exceeding it causes errors such as 503 or killed processes.
  • Entry processes. The number of simultaneous PHP requests. A flood of visitors or a slow script that holds connections can exhaust these, showing 508 Resource Limit Reached errors.
  • Inodes. The count of files and folders in your account, including every email and cache file. Plans have inode ceilings, and exceeding them can pause backups and block new files.
  • Disk space and bandwidth. Total storage and monthly data transfer.

Checking Your Usage

In cPanel, the right hand statistics column shows current usage. For history, open the Resource Usage tool, which graphs CPU, memory and process usage over the last day and month, and marks the moments limits were hit.

Reducing Usage Before Upgrading

  1. Enable caching. A cache plugin for WordPress cuts CPU use dramatically.
  2. Remove abandoned plugins, themes and staging copies.
  3. Empty old email folders and set retention on catch-all boxes; mail is a silent inode eater.
  4. Block abusive bots and aggressive crawlers, which often cause mystery CPU spikes at night.
  5. Schedule heavy tasks such as backups and imports during low traffic hours.

When to Upgrade

If limits are hit daily even after cleanup, your business has outgrown the plan, which is good news. Compare higher plans and VPS options from the Store menu at app.techguru.co.in, or ask support to review your usage graphs and recommend the smallest upgrade that solves the problem.


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