--- Giorgos Keramidas <[EMAIL PROTECTED]> wrote:
> On 2005-03-25 10:08, Jonathan Stewart <[EMAIL PROTECTED]> wrote:
> > --- Giorgos Keramidas keramida at ceid dot upatras dot gr wrote:
> > > So, what you are looking for is a single byte count that
> increases
> > > sequentially for all read() and write() system calls?
> >
> > Pretty much, yes. To be specific all read() and write() calls for a
> > given process. Even something that counted in 512 byte or
> UFUFSlocks
> > would be useful.
>
> To what end, may I ask? Per process statistics may include byte
> counts from a
> few thousand threads that read and/or write from a few hundred
> descriptors.
>
> Even per file descriptor statistics quickly get useless when one
> considers
> that a single byte read may cause the read-ahead of a few thousand
> bytes or
> that a single write may reach the corresponding device several
> seconds later.
>
As I mentioned in an earlier email my main use of this is really just
for one program. I can do a du to find out how much information it
needs to read and then by watching how much it has read get a rough
idea of how much longer it will be. Not really a necessary feature
just a "nice to have" kind of thing.
Jonathan
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