-roger
Martin Maechler wrote:
NEWS for R 1.8.0 has
USER-VISIBLE CHANGES
<......>
o On Unix-like systems interrupt signals now set a flag that is
checked periodically rather than calling longjmp from the
signal handler. This is analogous to the behavior on Windows.
This reduces responsiveness to interrupts but prevents bugs
caused by interrupting computations in a way that leaves the
system in an inconsistent state. It also reduces the number
of system calls, which can speed up computations on some
platforms and make R more usable with systems like Mosix.
and this has already caused grief here (actually it has several days ago, when I switched our users to R-1.8.0beta __ BUT THEY DIDN'T TELL ANY R DEVELOPER __ )
for a user who does use *large* matrices.
When accidentally calling print() {implicitly}, we have been used here to press CTRL+c (twice in Emacs ESS!) for stopping the output.
This no longer works in R 1.8.0 at least on our unix platforms. To reproduce, type
cbind(1:1e6)
and try to cut it short (it only takes a minute or so, whereas our user here had a matrix that needed more than 10 minutes of screen output !)
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