J
Jay
just ordered a matrox ultra 133 80Gb drive with 8Mb cache, wants the
performance gain with the increased cache?
performance gain with the increased cache?
just ordered a matrox ultra 133 80Gb drive with 8Mb cache,
maxtor.
wants the performance gain with the increased cache?
Previously Jay said:just ordered a matrox ultra 133 80Gb drive with 8Mb cache, wants the
performance gain with the increased cache?
Arno Wagner said:Without OS buffer-cache (think DOS): considerably.
So do you think the 8MB cache idea is mostly a marketing scheme,
and will the 2 MB cached HDs become obsolete?
Looks like lots of HD manufacturers are
selling HDs with the 8MB cache these days.
If 256Mb costs $5, then 64Mb (8MB) is probably $2. Why use anything smaller?
just ordered a matrox ultra 133 80Gb drive with 8Mb cache, wants the
performance gain with the increased cache?
There's probably a measurable difference in the lab, but I'd expect
the real world improvement is non existent.
I'd suspect the ram chip manufacturer simply improved it's product
(2M>8M) for the same price.
Papa said:So do you think the 8MB cache idea is mostly a marketing scheme,
and will the 2 MB cached HDs become obsolete?
Previously Alexander Grigoriev said:There is a case when it shows: multichannel playback. 8MB buffer allows to
read-ahead more (disk) tracks, so when multiple files are read in parallel,
there is less need to seek. With 2MB, number of channels that can be read in
parallel, is considerably less. When number of channels exceeds number of
disk tracks that can be kept in the read-ahead, number of seeks jumps
considerably.
<snip>Folkert Rienstra said:No, not at all.
If your application benefits from cache it will benefit longer from that
cache when it is bigger. In any cache, some data will be kicked sooner or
later to make place for newer data. The bigger the cache, the longer the
data can stay (more segments). Or with the same number of segments,
the bigger the individual cache segments can be.
When 2MB cache chips become more expensive than 8MB chips, very likely.
Actually a modern OS does its own read-ahead,
so this advantage vanished almost completely as well.