On Tue, 2011-12-20 at 13:14 +0100, Vincent Lefevre wrote: > Package: linux-2.6 > Version: 3.1.5-1 > Severity: minor > > I've had the following problem (under zsh-beta): > > ypig:~> time ./a.out 0.999 > ./a.out 0.999 2.87s user 18446744073.71s system -2147483648% cpu 2.902 total > > Of course, I can't reproduce it. I suppose this problem is quite rare > and occurs under some particular conditions. The value reported for system time looks close to the maximum possible 64-bit number of microseconds, presumably resulting from an underflow. Looking at the Debian source package zsh-beta, version 4.3.15-dev-0+20111220-1, it appears to use getrusage() where available, and doesn't appear to do any calculations that might cause such underflow. Ben. > I've search on Google and could only find: > > http://ftp.zcu.cz/mirrors/linux/kernel/v2.6/snapshots/old/patch-2.6.25-git4.log > > which mentions a "very huge system time" problem on IA64 due to > interrupts. This is unrelated, but could give an idea about a > possible cause... [...] -- Ben Hutchings Design a system any fool can use, and only a fool will want to use it.
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