System News
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Articles for the keywords: Crash Dump
24 Apr 2015 Better ways to handle crash dumps in Solaris [42105]
Chris Beal

Chris W Beal writes, "For some time now we've realised that system crash dumps in Solaris are getting larger, and taking longer to preserve. A number of us have been working on projects to help speed these up, and reduce the size.

The first of these was "Crash Dump Restructuring". Implemented by Sriman and Vlad, this went in to Solaris 11.2, and allowed the administrator to remove certain portions from the crash dump via the dumpadm(1m) command..."
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24 Apr 2015 Deferred dump in Solaris [42106]
Store dump in memory, reboot the system and extract the dump to disk

Vlad writes, "Kernels of even most robust operating systems do crash from time to time and getting crash dump image of kernel and process memory is usually indispensable for root causing the problem. With growing memory sizes (the M6-32 SPARC server can have up to 32TB of RAM) the amount of data which needs to be written to disk in order to store a crash dump can be pretty big - for larger systems uncompressed crash dumps with tens of gigabytes in size are not exceptional... To overcome this limitation I've been working with my colleagues Sriman, Brian, Nick and Chris to store dump in memory, reboot the system and extract the dump to disk. This technology is called Deferred dump..."
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