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Solaris™ Internals: Core Kernel Components by Richard McDougall, Jim Mauro

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A.4. File System Parameters

The file system and page flushing parameters in Table A-5 provide for tuning file system performance and manage the flushing of dirty pages from memory to disk.

You can read more about the fsflush and associated parameters in “Bypassing the Page Cache with Direct I/O” . “Directory Name Cache” and “Inode Caches” have more information on the file system parameters directory and inode caches.

Table A-5. File System and Page Flushing Parameters
Parameter Default Category Description/Notes
tune_t_flushr 5 Tunable fsflush interval; the fsflush daemon runs every tune_t_flushr seconds.
autoup 30 Tunable Age in seconds of dirty pages. Used in conjunction with tune_t_fsflushr; modified pages that are older than autoup are written ...

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