[lkml]   [2002]   [Jul]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRE: About the need of a swap area
>Much more.
>The latency difference seems to be on the order of 100000 times.
>It is the latency we care about because that determines how long
>the CPU cannot do anything useful but has to wait.

And if you look at the ratio between the access time of ram
which is in the low nanoseconds (1* 10 ^ -9) (data and address must be
present for at least
the rated number of ns to guarantee a sucessful read or write). and compare
it to
the seek + rotational delay of a discrete spindal which is in low
milliseconds (1* 10 ^ -3) that puts you at
a ratio of about 1000000.


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:27    [from the cache]
©2003-2014 Jasper Spaans. hosted at Digital Ocean