If you recalculate something, so that the something
doesn't stay in memory, it won't stay in the cache either.
The cache is a memory cache - what's there is also in
the main memory.
CPU's have become faster, but main memories have become bigger.
Nowadays, computers tend not to swap; if your server swaps
on a regular basis, you might want to do some tuning.
Memory I/O is faster than disk I/0, and the ratio
memory I/0 / disk I/0 is more than the ratio cache / memory.
Maybe not much of a data point, but from the servers with
resource problems I've seen, more of them benefitted from
getting more memory, than more or faster CPUs. Most computers
have more than enough CPU cycles - but usually they can use
more main memory.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
Outside of code tags, you may need to use entities for some characters:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||