I foolishly attempted to startup 25 uml instances on one system (dual 252
opterons with 8G of ram, each um instance getting 256M)
what I found was that they seem to be getting in each others way a LOT
(just on system boot), vmstat on the host is showing almost all of the cpu
time (80%+) being spent in the system, not in userspace (which surprised
me)
so before I spend much time gathering info to try and debug this I wanted
to ask what the current limits are, and if the limits should just be cpu
and ram, then I'll do more digging to find out what's happening in my
case.
I definantly have some oddities among the 25, two of the 25 did not get
far enough to use their cow files (20K each according to ls -ls) and when
I connect to them via uml_mconsole it hangs when I issue any command
(including help)
I'm working from home so I won't see the consoles until I get in on
monday, so I'll give more details then unless I'm told that I am being
silly to try to start this many on one system.
David Lang
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