Hi Moritz, im running a few high bandwidth relays, and i'm also interested in tuning the performance - at the moment i have experienced following things regarding AES-NI acceleration:
With an upgrade to ubuntu 13.10 x64 there seem to be no more support for aesni module - so it doesnt seem to be usable any more. With older ubuntu releases it works. I've recognized that some configurations are running easily with an higher throughput - but could not figure out whats the reason for it. My VPS'es are almost running in an KVM environment - but the 2 fastest ones running on OpenVZ hypervisor. Processor and Hardware underlying are not identical (corei7 or Xeon E3 in this case) so this doesnt seem to be a reason though for the different speed. But anyway im interested on reactivating that function as it seems to really speedup relay's speed. Thanks, Geri 2014-03-04 0:40 GMT+01:00 Moritz Bartl <mor...@torservers.net>: > On 03/03/2014 11:53 PM, Felix wrote: > > In case there is a strong relay ie 1Gbit/s, enough cores and RAM > > so the HW is not limiting. Let's further assume only one IP. > > > > Could a single Tor daemon on Debian be a bottle neck? > > If yes, could be more performance to start two (or more) daemons and > > bind the first OR Port to :443 and the second to :8080. Both at the same > > 'eth' interface? > > Both OR Ports are based on the same IP so they would be the same family > > member. > > Yes, you do want to run multiple Tor processes on a high bandwidth > machine as Tor currently does not scale well across multiple CPU cores. > You will notice that you will hit a CPU limit at ~100 Mbps (or ~300-400 > Mbps with a CPU that supports AES-NI crypto acceleration). > > But, currently, you can only run two Tor process per IP address. > > Relays in the same /16 IPv4 subnets are considered part of one family > automatically. > > -- > Moritz Bartl > https://www.torservers.net/ > _______________________________________________ > tor-relays mailing list > tor-relays@lists.torproject.org > https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-relays >
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