UBC parameter units

User Beancounters Definition /proc/user_beancounters /proc/bc/ General information Units of measurement VSwap Parameters description Primary parameters numproc, numtcpsock, numothersock, vmguarpages Secondary parameters kmemsize, tcpsndbuf, tcprcvbuf, othersockbuf, dgramrcvbuf, oomguarpages, privvmpages Auxiliary parameters lockedpages, shmpages, physpages, numfile, numflock, numpty, numsiginfo, dcachesize, numiptent, swappages Internals User pages accounting RSS fractions accounting On-demand accounting UBC consistency Consistency formulae System-wide configuration vzubc(8) Configuration examples Basic Derived Intermediate configurations Tables List of parameters Parameter properties Consistency Config examples

1. entries which name has word 'page' are measured in memory pages (4K on x86 and x86_64, 16K for IA64). These are privvmpages, oomguarpages and others.
2. entries with names like 'num*' are measured in items. i.e. numproc - number of processes, numiptent - number of iptables entries.
3. other entries like kmemsize, tcprcvbuf, tcpsndbuf are measured in bytes

Overriding default units

When using vzctl to set beancounter parameters, you can set units explicitly when appropriate (i.e. for all parameters which names are not starting with num*). The following suffixes are available:

g, G	gigabytes
m, M	megabytes
k, K	kilobytes
p, P	memory pages

Examples of freelance writing

• Set kmemsize limit to 512 Kb

# vzctl set $CTID --kmemsize 512k

• Set privvmpages limit to 256 Mb

# vzctl set $CTID --privvmpages 256m

• Set tcprcvbuf limit to 1000 pages (totals to almost 4 Mb on x86)

# vzctl set $CTID --tcprcvbuf 1000p