mongod will use the mincore() kernel function (or the similar Windows QueryWorkingSetEx() API) on platforms where we have provided support in a src/mongo/util/processinfo_<platform>.cpp file to enable better runtime decisions about when to throw a PageFaultException.
We do not provide a processinfo_*.cpp file for Solaris/SmartOS, though Solaris has support for mincore() (according to http://www.opensolarisforum.org/man/man2/mincore.html) and has supported the mincore() function since Solaris 9 (according to http://fossies.org/linux/privat/libsigsegv-2.10.tar.gz:a/libsigsegv-2.10/src/stackvma-mincore.c).
The missing support results in a warning message being displayed by mongod in the Solaris/SmartOS build, and in the jstests/block_check_supported.js test reporting failure (because Solaris is not being excluded from testing):
** NOTE: your operating system version does not support the method that MongoDB
** uses to detect impending page faults.
** This may result in slower performance for certain use cases
Testing workingSet and indexCounters portions of serverStatus
Testing db.serverStatus({workingSet:1}).workingSet for expected fields
assert: Test FAILED: missing "note" field
Error: Printing Stack Trace
at printStackTrace (src/mongo/shell/utils.js:37:15)
at doassert (src/mongo/shell/assert.js:6:5)
at testExpectedFields (/data/buildslaves/SolarisSmartOS_64bit/mongo/jstests/block_check_supported.js:14:13)
at doTest (/data/buildslaves/SolarisSmartOS_64bit/mongo/jstests/block_check_supported.js:67:9)
at /data/buildslaves/SolarisSmartOS_64bit/mongo/jstests/block_check_supported.js:100:1
Thu Apr 11 10:57:46.942 JavaScript execution failed: Test FAILED: missing "note" field at src/mongo/shell/assert.js:L7
failed to load: /data/buildslaves/SolarisSmartOS_64bit/mongo/jstests/block_check_supported.js
It would be good to add a src/mongo/util/processinfo_solaris.cpp file (similar to the Linux version) to enable this support. If required, the structure of this support allows this to be a runtime test.
- related to
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SERVER-7404 Solaris file relocation error: posix_fadvise
-
- Closed
-