# VM size burst for workshop purposes

**URL:** <https://discourse.openondemand.org/t/vm-size-burst-for-workshop-purposes/901>\
**Category:** Get Help\
**Created:** [May 8, 2020, 8:24pm UTC](https://discourse.openondemand.org/t/vm-size-burst-for-workshop-purposes/901 "2020-05-08T20:24:52Z")\
**Posts on this page:** 1\
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**Author:** ![jeff.ohrstrom](https://sea1.discourse-cdn.com/flex015/user_avatar/discourse.openondemand.org/jeff.ohrstrom/32/136_2.png) [@jeff.ohrstrom](https://discourse.openondemand.org/u/jeff.ohrstrom)\
**Post date:** [May 8, 2020, 9:15pm UTC](https://discourse.openondemand.org/t/vm-size-burst-for-workshop-purposes/901/2 "2020-05-08T21:15:47Z")

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Hey! I think the Memory and CPU stats are fine. The `/tmp` partition, may or may not hold, depending on how your clients upload files. But, the fact that it’s on your mind is good anyhow.

The last thing I’d say is change your apache mpm configs (if you can, if you don’t need PHP libraries, you should). Here are a couple of topics on it. The first details the mpm settings we use, the second says a little bit about where to drop the files (with some formatting). I say this, because everyone is likely going to connect around the same time and that can be a struggle with `mpm_prefork`.

> [@OOD Host configuration recommendations](https://discourse.openondemand.org/t/ood-host-configuration-recommendations/883):
>
> Posting general contents of an offline email thread here in case it would be of assistance to anyone else in the future: From: Ashok Ragavendran , Brown University The question relates to server loads and how you manage balancing and provisioning of the actual front end web servers. I am wondering if you can provide any information on the current configuration that is being implemented at the OSC and any metrics on the loads that your experience. Any recommendations you can provide within thi…

> [@MaxRequestWorkers setting](https://discourse.openondemand.org/t/maxrequestworkers-setting/734/2):
>
> I think here’s a good [serverfault](https://serverfault.com/questions/383526/how-do-i-select-which-apache-mpm-to-use/383634#383634) topic on the subject. Yes it’s safe to modify these files, but they could be overwritten by a new install, so you’d be wise to write some automation around configuring your apache. Though the file /opt/rh/httpd24/root/etc/httpd/conf.modules.d/00-mpm.conf determines which type of mpm module you use (you’ve linked a CGI config file, that’s not the file/config you’re looking fo). Looks like default is prefork. If you want to switch types, then modify this file, …

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