> This is the trickle syncer. It prevents bursts of disk activity every
> 30 seconds. It is for non-fsync writes, of course, and I assume if the
> kernel buffers get low, it starts to flush faster.
AFAICT, the syncer only speeds up when virtual memory paging fills the
buffers past
a threshold and even in that event it only speeds it up by a factor of two.
I can't find any provision for speeding up flushing of the dirty buffers
when they fill for normal file system writes, so I don't think that
happens.
- Curtis