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Re: [tor-bugs] #23751 [Core Tor/Tor]: [warn] tor_bug_occurred_: Bug: src/common/buffers.c, etc.
#23751: [warn] tor_bug_occurred_: Bug: src/common/buffers.c, etc.
------------------------------------------------+--------------------------
Reporter: Felixix | Owner: (none)
Type: defect | Status: new
Priority: High | Milestone: Tor:
| 0.3.2.x-final
Component: Core Tor/Tor | Version:
Severity: Normal | Resolution:
Keywords: tor-channel, tor-sched, tor-buffer | Actual Points:
Parent ID: | Points:
Reviewer: | Sponsor:
------------------------------------------------+--------------------------
Comment (by Felixix):
The number of circuits for this particular tor process was pretty high
(200k) for hours compared to other relays (typ <20k).
An increase in mbuf clusters usage could be observed after one day and
having set the MaxMemInQueues higher.
I changed from
`MaxMemInQueues 2 GB`
to
`MaxMemInQueues 4 GB`
service tor reload
{{{
Oct 01 08:20:52.000 [notice] Received reload signal (hup). Reloading
config and resetting internal state.
Oct 01 08:20:52.000 [notice] Read configuration file
"/usr/local/etc/tor/torrc".
}}}
The last 4 minutes (on minutes log base)
top -nCSjI
{{{
PID JID USERNAME THR PRI NICE SIZE RES
STATE C TIME CPU COMMAND
2017-10-02_02-57-00:66451 5 256 6 20 0 3050M 2984M
uwait 0 71.9H 11.87% tor
2017-10-02_02-58-00:66451 5 256 6 20 0 3054M 2986M
uwait 3 71.9H 11.47% tor
2017-10-02_02-59-00:66451 5 256 6 20 0 3054M 2986M
uwait 2 71.9H 100.00% tor
2017-10-02_03-00-00:66451 5 256 6 20 0 3054M 2986M
uwait 2 71.9H 100.00% tor
}}}
netstat -m | grep "mbuf clusters in use"
{{{
2017-10-02_02-57-00: 2508/43038/45546/2035262 mbuf clusters in use
(current/cache/total/max)
2017-10-02_02-58-00: 2552/42994/45546/2035262 mbuf clusters in use
(current/cache/total/max)
2017-10-02_02-59-00: 19335/26211/45546/2035262 mbuf clusters in use
(current/cache/total/max)
2017-10-02_03-00-00: 33636/11910/45546/2035262 mbuf clusters in use
(current/cache/total/max)
}}}
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23751#comment:6>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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