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Mr. Death
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Joined: 14 Jan 2012
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PostPosted: Wed Apr 25, 2012 11:40 am    Post subject: rtorrent and 100% CPU Reply with quote

Hi, I have problem on my new router with rtorrent. After while it tooks 100% of CPU. I've tried masked version too with the same problem. On my previous router it worked normal. I can't locate the problem. Do you know, where could be the problem? Or what to check? Thanks in advance and sorry if it's in wrong section.
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audiodef
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Joined: 06 Jul 2005
Posts: 5256

PostPosted: Wed Apr 25, 2012 2:06 pm    Post subject: Reply with quote

The first thing I would do is start rtorrent from a terminal and watch any output. Is there any?
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Mr. Death
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PostPosted: Wed Apr 25, 2012 2:58 pm    Post subject: Reply with quote

Usually it's starts CPU drain, when someone starts downloading, but it isn't OK and even when there isn't any traffic it holds 100%.

I've tried disable all parameters, same problem.
Here is my configuration:

directory=torrent_dir
download_rate=6M
upload_rate=6M
bind = my_ip
port_range = 26900-26990
use_udp_trackers = yes
check_hash = no
session = /var/rtorrent
system.umask.set = 0000
dht = off
#dht_port = 26991
encryption = allow_incoming, try_outgoing,enable_retry, prefer_plaintext
peer_exchange = yes
scgi_port = 127.0.0.1:5000
encoding_list = UTF-8
max_memory_usage = 1400M
network.send_buffer.size.set = 2M
network.receive_buffer.size.set = 4M
min_peers = 80
max_peers = 160
min_peers_seed = 160
max_peers_seed = 320
max_uploads = 40
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M
Guru
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Joined: 12 Dec 2006
Posts: 427

PostPosted: Wed Apr 25, 2012 4:17 pm    Post subject: Reply with quote

This happened to me too recently.
No such behaviour since I recompiled rtorrent with xmlrpc flag disabled. I don't use web frontend anyway, I guess that is what xmlrpc is for.
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Mr. Death
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PostPosted: Wed Apr 25, 2012 10:22 pm    Post subject: Reply with quote

Tried disable xmlrpc and same problem. I don't know, what else should I check. :(
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Mr. Death
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PostPosted: Wed May 02, 2012 9:27 pm    Post subject: Reply with quote

Now I've tried downgrade to previous version (0.8.7/0.12.7) and receiving segfaults. When trying open rtgui. It could be connected with newer version of XMLRPC.
But no 100% CPU. Definitely newer versions have some problems.
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chrisyu
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PostPosted: Thu May 03, 2012 12:45 pm    Post subject: Reply with quote

Had same problem too, x86 and amd64, multiple versions.

Now I switched to transmission. :oops:

You could try re-emerge curl with USE='-threads ares', after I switched to transmission, there is a bug if you emerge curl with threads.
But this is just a blind shot.

Good luck.


Last edited by chrisyu on Fri May 04, 2012 3:02 am; edited 1 time in total
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Mr. Death
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PostPosted: Thu May 03, 2012 3:53 pm    Post subject: Reply with quote

chrisyu wrote:
Had same problem too, x86 and amd64, multiple versions.

Now I switched to transmission. :oops:

You could try re-emerge curl with USE='-threads ares', after I switched to transmission, there is a bug if you emerge curl with threads.
But this is just a blind shoot.

Good luck.


It seems it helped. Meanwhile my harddrive is almost dead and need replace and I can't to test it properly. Thank you.
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trubicoid
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PostPosted: Mon May 07, 2012 12:35 pm    Post subject: Reply with quote

chrisyu wrote:
try re-emerge curl with USE='-threads ares'


it helped, thanks a lot! :D
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Mr. Death
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PostPosted: Mon May 07, 2012 12:38 pm    Post subject: Reply with quote

Yes, it helped and there is something wrong with curl.
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trubicoid
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PostPosted: Mon May 07, 2012 12:57 pm    Post subject: Reply with quote

actually the new unstable version of curl doesn't allow you to choose together ares and threads.
but I haven't tried -ares threads, maybe it also works.
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trubicoid
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PostPosted: Tue May 08, 2012 11:10 am    Post subject: Reply with quote

so -ares +threads and curl-7.25.0-r1 results in 100%cpu usage
keep +ares -threads
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alex67500
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PostPosted: Mon Oct 08, 2012 4:45 pm    Post subject: Reply with quote

Hi,

this is not a Gentoo specific issue, it seems to be the case of FreeBSD too.

Have you managed to solve it?

Thanks.
--
Alex
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Mr. Death
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PostPosted: Mon Oct 08, 2012 5:01 pm    Post subject: Reply with quote

I've solved by using older curl.
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