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[tor-bugs] #15034 [Tor]: swap storm and MaxMemInQueues
#15034: swap storm and MaxMemInQueues
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Reporter: toralf | Owner:
Type: defect | Status: new
Priority: normal | Milestone:
Component: Tor | Version:
Keywords: | Actual Points:
Parent ID: | Points:
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I experienced at a hardened Gentoo Linux exit relay 3 times in the last 2
weeks a swap storm, resulting in writing 10 till 12 GB to swap.
This made the exit relay unresponsive for a longer time frame.
At least for the last time the swap storm seems to correlate with a lot of
port scan connections over port 80 ("a lot" == 500 till 2000 and even more
connections per seconds to a wide address range).
So I added today to torrc the line
MaxMemInQueues 4 GB
Anything else what I should do to narrow down the root cause ?
The linux kernel is a hardened 3.18.x linux, tor was 0.2.6.2-alpha
(switched now to 2.6.3-alpha)
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/15034>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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