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docs: Discourage users to set hard_limit

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In one of my previous patches I am removing the hard_limit heuristic to
guess the correct value if none set. However, it turned out, this limit
is hard to guess even for users. We should advise them to not set the
limit as their domains may be OOM killed. Sigh.
This commit is contained in:
Michal Privoznik 2013-08-19 11:54:05 +02:00
parent 16bcb3b616
commit 09adfdc62d
1 changed files with 5 additions and 1 deletions
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docs/formatdomain.html.in
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@ -676,7 +676,11 @@
<dt><code>hard_limit</code></dt>
<dd> The optional <code>hard_limit</code> element is the maximum memory
the guest can use. The units for this value are kibibytes (i.e. blocks
of 1024 bytes)</dd>
of 1024 bytes). <strong>However, users of QEMU and KVM are strongly
advised not to set this limit as domain may get killed by the kernel.
To determine the memory needed for a process to run is
<a href="http://en.wikipedia.org/wiki/Undecidable_problem">
undecidable problem</a>.</strong></dd>
<dt><code>soft_limit</code></dt>
<dd> The optional <code>soft_limit</code> element is the memory limit to
enforce during memory contention. The units for this value are