-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Nick Mathewson: > Circuit creation happens within the Tor protocol. How many > circuit creation requests you get at once is a function of how much > bandwidth you appear to have. How many you can handle is a > function of how fast your CPU is, and how fast your crypto > implementation is.
Slow and slow, for the Raspberry Pi. I have started gathering student hand-optimized crypto routines from around the net that are written from ARMv6, but that's a looooong ways away. > You can decrease how much bandwidth you appear to have with > "MaxAdvertisedBandwidth", but you already knew that. Yep. I just don't understand why it's so spiky. > One thing that you should try is seeing whether the latest 0.2.4.x > release does any better for you. In particular, I'd recommend > trying the just-released 0.2.4.16-rc, with openssl 1.0.1e, and make > sure that openssl 1.0.1e was built with the > -enable-ec_nistp_64_gcc_128 option if possible. (I see you're > already using 1.0.1e, but it doesn't appear to have been built with > that option.) Yeah, I just noticed this morning that because I'd installed the Pi a few months ago before I upgraded to 0.2.4.x everywhere (figured I might as well when I upgraded my bridges to obfs3), it's still on 0.2.3.x. > Using 0.2.4.x should let Tor use a faster circuit extension > handshake to clients that support it. It will also have Tor use an > improved algorithm for deciding how long is too long for a circuit > queue. Instead of limiting the queue to a fixed number, it limits > the size of the queue based on the expected time to clear it. I'll try it in the next day or two. > (Another thing to look at would be the output of ./src/test/bench > in the 0.2.4.x package.) And I'll try that and post it. - -Gordon -----BEGIN PGP SIGNATURE----- iQEcBAEBCgAGBQJSCQ4oAAoJED/jpRoe7/ujw6IIAKMJZr+h+VLfoTd4VjKehsrF qNNw3nstx82bAcaehKEFPSrvkIH2FRO+FqYR6ai+pWHTV8zZI593GA46Mb+9ElUU Gpifg/D0oJtitsjwzB1MQ+MqNfqa7/13jQ45nm5J9ip51KqbyUwgwR4XAhFRxQ8H J7Uv47SRqSd4sV0YQSC2rBOYFStLz0tYsN89L4ArC6mph83aNqpM0W2vopkRbO2R xC8//NmWQ93wsqkRFHpc3jZVsTuURx3YmgiCF4mpn/me7X/o0j9bhP8ZOmWW/vfB 6kdGG7a0tBYcciQk7VWqNHsGMh+PEIJCPAOS+sbeeds+0ZN8BPbXSRwHj/0OQ8s= =C2cg -----END PGP SIGNATURE----- _______________________________________________ tor-relays mailing list [email protected] https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-relays
