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2e1fe1fcf9
This implements "algorithm 1" from my discussion of bug #9072: on OOM, find the circuits with the longest queues, and kill them. It's also a fix for #9063 -- without the side-effects of bug #9072. The memory bounds aren't perfect here, and you need to be sure to allow some slack for the rest of Tor's usage. This isn't a perfect fix; the rest of the solutions I describe on codeable.
16 lines
844 B
Plaintext
16 lines
844 B
Plaintext
o Major bugfixes:
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- When we have too much memory queued in circuits (according to a new
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MaxMemInCellQueues option), close the circuits consuming the most
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memory. This prevents us from running out of memory as a relay if
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circuits fill up faster than they can be drained. Fixes
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bug 9063; bugfix on the 54th commit of Tor. This bug is a further
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fix beyond bug 6252, whose fix was merged into 0.2.3.21-rc.
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Also fixes an earlier approach taken in 0.2.4.13-alpha, where we
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tried to solve this issue simply by imposing an upper limit on the
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number of queued cells for a single circuit. That approach proved to
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be problematic, since there are ways to provoke clients to send a
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number of cells in excess of any such reasonable limit.
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Fixes bug 9072; bugfix on 0.2.4.13-alpha.
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