How to reduce memory usage for Meteor?

Question

I created a very simple Meteor (v1.0.1, development mode) web application, it's on a staging server so only a few users has access to it. The server is on Rackspace and have 1GB of memory.

When I returned from my weekend break, I get this error:

FATAL ERROR: Evacuation Allocation failed - process out of memory Aborted (core dumped)

I restarted the application and ran top. I see that I only have 70MB of memory left, and the top three process are from meteor, taking up nearly 60% of the memory. The second process (15517) keeps creaping up in memory usage (9.7, when first started, to 10.6 in about an hour), and I have a feeling it might be the one that causes out-of-memory (OOM) error.

  PID USER   PR   NI   VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND                                         
15445 root   20   0 1367736 443624   2792 S 10.3 43.8   6:09.26 [dir]/.meteor/packages/meteor-tool/.1.0.36.1rumazb++os.linux.+
15517 root   20   0  830796 107040   3172 R  3.0 10.6   1:07.75 [dir]/.meteor/packages/meteor-tool/.1.0.36.1rumazb++os.linux.+
15468 root   20   0  813608  36348   1824 S  0.3  3.6   0:04.82 [dir]/.meteor/packages/meteor-tool/.1.0.36.1rumazb++os.linux.+

I have asked, in a different question, what these processes do, but in this question, I want to focus on what can I do to reduce the memory usage of Meteor? Is there a way to cap how much memory can be allocated to Meteor, to prevent this fatal error? It is a very simple application after all.