> On Sat, Mar 14, 2015 at 8:05 PM, <jesper@xxxxxxxx> wrote: >> Hi >> I have a 3.13 (ubuntu LTS) server with 3TB of memory and under certain >> load >> conditions it can spiral off to 80+% system load. Per recommendation on >> IRC >> yesterday I have captured 2 perf reports (I'm new to perf, so I'm not >> sure they tell precisely whats needed. >> >> Bad situation (high sysload 80%+) > Hi Jesper, please take a look on > http://marc.info/?l=linux-mm&m=141605213522925&w=2, there is a long > and unfinished discussion as it seems very problematic to make a > deterministic reproduction of the bug in our environments. If you can > observe same lockups with more ease, it`ll help a lot in the issue > pinning and fixing. Hi Andrey. Yes it looks indeed familiar. I can do a fair amount of testing and our normal production load triggers the problem 6-10 times per day and I'm willing to garther data to help move forward. What do you suggest is next? Jesper -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>