[tor-bugs] #24716 [Core Tor/DirAuth]: Try cranking up cbttestfreq consensus param, to see if it helps the current overload

Tue Jan 9 00:17:10 UTC 2018

#24716: Try cranking up cbttestfreq consensus param, to see if it helps the current
overload
------------------------------+------------------------------------
 Reporter:  arma              |          Owner:  (none)
     Type:  task              |         Status:  new
 Priority:  Medium            |      Milestone:  Tor: 0.3.3.x-final
Component:  Core Tor/DirAuth  |        Version:
 Severity:  Normal            |     Resolution:
 Keywords:                    |  Actual Points:
Parent ID:                    |         Points:
 Reviewer:                    |        Sponsor:
------------------------------+------------------------------------

Comment (by arma):

 My ntor load has varied but lately it is crazy high.

 Here are the lines since the last ones I pasted:
 {{{
 Dec 30 18:38:00.502 [notice] Circuit handshake stats since last time:
 455344/455344 TAP, 28975792/28975813 NTor.
 Dec 31 00:38:00.536 [notice] Circuit handshake stats since last time:
 699334/699334 TAP, 27973797/27973843 NTor.
 Dec 31 06:38:00.542 [notice] Circuit handshake stats since last time:
 853782/853786 TAP, 29181912/29181969 NTor.
 Dec 31 12:38:00.536 [notice] Circuit handshake stats since last time:
 826675/826677 TAP, 27429591/27429629 NTor.
 Dec 31 18:38:00.573 [notice] Circuit handshake stats since last time:
 691791/691799 TAP, 41866424/41866586 NTor.
 Jan 01 00:38:00.549 [notice] Circuit handshake stats since last time:
 755275/755293 TAP, 38457671/38457826 NTor.
 Jan 01 06:38:00.569 [notice] Circuit handshake stats since last time:
 622897/622923 TAP, 23214801/23214813 NTor.
 Jan 01 12:38:00.552 [notice] Circuit handshake stats since last time:
 552771/552771 TAP, 21665861/21665865 NTor.
 Jan 01 18:38:00.554 [notice] Circuit handshake stats since last time:
 627477/627604 TAP, 35923014/35923158 NTor.
 Jan 02 00:38:00.555 [notice] Circuit handshake stats since last time:
 604364/604365 TAP, 30375781/30375796 NTor.
 Jan 02 06:38:00.555 [notice] Circuit handshake stats since last time:
 691533/691547 TAP, 33685459/33685478 NTor.
 Jan 02 12:38:00.553 [notice] Circuit handshake stats since last time:
 738342/738351 TAP, 33851359/33851421 NTor.
 Jan 02 18:38:00.567 [notice] Circuit handshake stats since last time:
 455824/455825 TAP, 31640360/31640429 NTor.
 Jan 03 00:38:00.568 [notice] Circuit handshake stats since last time:
 680932/681281 TAP, 28213577/28215385 NTor.
 Jan 03 06:38:00.577 [notice] Circuit handshake stats since last time:
 684922/684922 TAP, 30468494/30468518 NTor.
 Jan 03 12:38:00.584 [notice] Circuit handshake stats since last time:
 706932/706936 TAP, 32047162/32047204 NTor.
 Jan 03 18:38:00.586 [notice] Circuit handshake stats since last time:
 717007/717007 TAP, 33859568/33859589 NTor.
 Jan 04 00:38:00.586 [notice] Circuit handshake stats since last time:
 254597/254597 TAP, 39652360/39652429 NTor.
 Jan 04 12:35:31.607 [notice] Circuit handshake stats since last time:
 370544/370544 TAP, 43227111/43227209 NTor.
 Jan 04 18:35:31.651 [notice] Circuit handshake stats since last time:
 419505/463538 TAP, 57708012/57718125 NTor.
 Jan 05 00:35:31.667 [notice] Circuit handshake stats since last time:
 323241/328550 TAP, 61154041/61154849 NTor.
 Jan 05 06:35:31.677 [notice] Circuit handshake stats since last time:
 320161/321177 TAP, 56381809/56382464 NTor.
 Jan 05 12:35:31.703 [notice] Circuit handshake stats since last time:
 461325/465544 TAP, 56769051/56769766 NTor.
 Jan 05 18:35:31.706 [notice] Circuit handshake stats since last time:
 511351/652657 TAP, 62709365/62749635 NTor.
 Jan 06 10:24:49.143 [notice] Circuit handshake stats since last time:
 261450/261450 TAP, 38935974/38937202 NTor.
 Jan 06 23:14:22.057 [notice] Circuit handshake stats since last time:
 473587/473589 TAP, 46681363/46681447 NTor.
 Jan 07 05:14:22.102 [notice] Circuit handshake stats since last time:
 486614/486615 TAP, 46743956/46744012 NTor.
 Jan 07 11:14:22.144 [notice] Circuit handshake stats since last time:
 496896/496896 TAP, 48832445/48832552 NTor.
 Jan 07 17:14:22.176 [notice] Circuit handshake stats since last time:
 477255/503942 TAP, 47588565/47592247 NTor.
 Jan 07 23:14:22.201 [notice] Circuit handshake stats since last time:
 492865/493968 TAP, 50934071/50936320 NTor.
 Jan 08 05:14:22.231 [notice] Circuit handshake stats since last time:
 426030/426035 TAP, 45163497/45163547 NTor.
 Jan 08 11:14:22.204 [notice] Circuit handshake stats since last time:
 452647/457412 TAP, 38736117/38754463 NTor.
 Jan 08 17:14:22.232 [notice] Circuit handshake stats since last time:
 510958/511346 TAP, 46547845/46548062 NTor.
 }}}

 So maybe the circuit overload is still here because of #24769, or maybe
 this experiment was overall a failure.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24716#comment:12>
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