Re: [thredds] TDS 4.5 Heap issues

• To: "Walker, Jordan" <jiwalker@xxxxxxxx>
• Subject: Re: [thredds] TDS 4.5 Heap issues
• From: Christian Ward-Garrison <cwardgar@xxxxxxxx>
• Date: Wed, 25 Feb 2015 17:10:07 -0700

Hi Jordan,

I haven't investigated this specific issue, but I suspect it's related to
this: https://github.com/Unidata/thredds/issues/97

If so, it's been fixed in the development branch, 4.6.0. We may apply it to
4.5 as well.

Cheers,
Christian

On Wed, Feb 25, 2015 at 3:52 PM, Walker, Jordan <jiwalker@xxxxxxxx> wrote:

> We are seeing something on TDS 4.5 that hadn't been occurring on 4.3.  Our
> heap is set to 4GB, but with somewhat heavy use this is filling up very
> fast (several hours) and causing out of memory errors.  Looking briefly at
> some heapdumps.  It appears that the issue is some hdf5 headers that are
> sticking around in the heap and not being cleaned up.  Specifically there
> are about 5,500,000 char[] that are around 500 bytes each.
>
> Is it possible that I have a misconfiguration that is causing this to
> occur?  Otherwise, what else might I provide that will help diagnose this
> problem?
>
> --
> Jordan Walker
> Center for Integrated Data Analytics
> US Geological Survey
> 8505 Research Way
> Middleton, WI 53562
> 608.821.3842
> http://cida.usgs.gov
>
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    • From: Walker, Jordan