I hope someone can help as I'm at a loose end.

During normal server usage kbcached (sar -r) peaks at 300Mb; this
utilization problem can be reproduced on a cleanly booted server. If I
cat/strings a couple of large files and redirect the output to
/dev/null, kbcached (sar -r) jumps from 70Mb to 300Mb forcing the
system to page. After a reboot or approximately 8 hours uptime this
cached data is released/flushed.

Is it possible to tune the frequency at which kernel cached data is

Any guidance would be hugely appreciated.

Best Regards - Colin Rudakiewicz