Body: <p>I'm running Craft on our shared hosting with PHP 7.2. No SSD. Performance is fine, but working in the backend, I often get hickups of several seconds (!), where nothing happens, everything stalls.</p>
  
  <p>Here's what cPanels resources diagram tells us:</p>
  
  <p><a href="https://i.sstatic.net/5cK7w.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/5cK7w.png" alt="enter image description here"></a></p>
  
  <p>So ... something with I/O and I/O Faults.</p>
  
  <p>Could this be solved without changing the hosting?</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2018-08-24T22:52:47.543Z
Comments.Text: Having you tried contacting your host to let them know what you're seeing? Shared hosting is tricky because you're contenting for resources (including disk I/O) with every other site that is hosted on that box.
Comments.UserDisplayName: Brad Bell
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2018-08-25T07:01:49.267Z
Comments.Text: Is the I/O thing a particularity of twig, yii, craft? Does it write a lot of files?
Comments.UserDisplayName: Urs
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2018-08-28T05:45:14.033Z
Comments.Text: Not really?  99% of Craft's/Twig's writing on any given request will be in `craft/storage/runtime`.
Comments.UserDisplayName: Brad Bell
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2018-09-03T11:34:41.197Z
Comments.Text: Since the hoster raised the I/O limits, it's been going well. Still testing, but it looks like 2MB/s are required to avoid these timeouts
Comments.UserDisplayName: Urs
Tags: <performance><hosting>
Title: Craft on a cPanel hosting with CentOS and CloudLinux – I/O faults?
ThreadText: # Craft on a cPanel hosting with CentOS and CloudLinux – I/O faults?
  
  (Asked by: username_0 on 2018-08-24)
  
  I'm running Craft on our shared hosting with PHP 7.2. No SSD. Performance is fine, but working in the backend, I often get hickups of several seconds (!), where nothing happens, everything stalls.
  
  Here's what cPanels resources diagram tells us:
  
  [![enter image description here](https://i.sstatic.net/5cK7w.png)](https://i.sstatic.net/5cK7w.png)
  
  So ... something with I/O and I/O Faults.
  
  Could this be solved without changing the hosting?
  
  **Tags:** performance, hosting
  
  > **Comments:**
  > **username_1**: Having you tried contacting your host to let them know what you're seeing? Shared hosting is tricky because you're contenting for resources (including disk I/O) with every other site that is hosted on that box.  
  > **username_0**: Is the I/O thing a particularity of twig, yii, craft? Does it write a lot of files?  
  > **username_1**: Not really?  99% of Craft's/Twig's writing on any given request will be in `craft/storage/runtime`.  
  > **username_0**: Since the hoster raised the I/O limits, it's been going well. Still testing, but it looks like 2MB/s are required to avoid these timeouts  
  
  ---
  
  ## 0 answers
  
  