You're right. A bug has already been raised for this:
4894692 caching data in heap inflates crash dump
Thomas Maier-Komor wrote On 11/10/06 15:40,:
Hi,
I'm not sure if this is the right forum, but I guess this topic will be bounced
into the right direction from here.
With ZFS using as much physical memory as it can get, dumps and livedumps via 'savecore -L' are huge in size. I just tested it on my workstation and got a 1.8G vmcore file, when dumping only kernel pages.
Might it be possible to add an extension that would make it possible, to
support dumping without the whole ZFS cache? I guess this would make kernel
live dumps smaller again, as they used to be...
Any comments?
Cheers,
Tom
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