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6.2.2 Global limits

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The kernel has supports for user limit (memory, processes file handles). With virtual server, we may want to limit the resources used by all processes in the virtual server. The security context would be used as the key here. The following resources could be limited on a security context basis (as opposed to user or process basis)

  • Memory used
  • Processes number
    (Done: This is now supported with the nproc flag in the kernel 2.4.16ctx-4. By default a new vserver is limited to 1000 processes maximum, configurable).
  • File handles
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