tmpfs workaround

[David Cheney]

Hi Clint, 

I'm not sure about that, it's pretty hard to interpose yourself into Go programs because they don't use libc, so linker overrides won't be effective.

The actually problem we're working around is most of the tests fire up a mongodb instance to test against. For reasons we're not quite sure of, mongo is creating ~ 250mb of scratch space during each test run. This space is reused, but as we test multiple packages in parallel, the effect, if you're using spinning rust is profound. Most of the team never saw this as they mount /tmp on a ramdisk, so I was sharing my recipe for this for others that wanted to try it.

Cheers

Dave  


On Wednesday, 26 September 2012 at 4:38 AM, Clint Byrum wrote:

> Excerpts from David Cheney's message of 2012-09-25 04:32:46 -0700:
> > /etc/fstab:tmpfs /tmp tmpfs nodev,nosuid,mode=1777 0 0
> > 
> > 
> > ^ and reboot 
> 
> This made me wonder.. is there something like 'eatmydata' for go
> programs? Its a nice hack to get rid of things like this (LD_PRELOADS
> a library which disables all the ways data is sync'd to disk in libc).
> 
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