On Sun, 01 May 2011 20:26:54 EDT, Valdis.Kletnieks@xxxxxx said: > On Fri, 29 Apr 2011 16:26:16 PDT, akpm@xxxxxxxxxxxxxxxxxxxx said: > > The mm-of-the-moment snapshot 2011-04-29-16-25 has been uploaded to > > > > http://userweb.kernel.org/~akpm/mmotm/ > > Dell Latitude E6500 laptop, Core2 Due P8700, 4G RAM, 2G swap.Z86_64 kernel. > > I was running a backup of the system to an external USB hard drive. Is a red herring. Am seeing it again, after only 20 minutes of uptime, and so far I've only gotten 1.2G or so into the 4G ram (2.5G still free), and never touched swap yet. Aha! I have a reproducer (found while composing this note). /bin/su will reliably trigger it (4 tries out of 4, launching from a bash shell that itself has sane VmRSS and VmHWM values). So it's a specific code sequence doing it (probably one syscall doing something quirky). Now if I could figure out how to make strace look at the VmRSS after each syscall, or get gdb to do similar. Any suggestions? Am open to perf/other solutions as well, if anybody has one handy...
Attachment:
pgpwx09LNNAlv.pgp
Description: PGP signature