[anti-censorship-team] Need to increase number of tor instances on snowflake-01 bridge, increased usage since yesterday

[David Fifield]

On Thu, Sep 22, 2022 at 09:24:47AM -0600, David Fifield wrote:
> There is increased usage of the snowflake-01 bridge since yesterday,
> likely related to protests/shutdowns in Iran. The 4 load-balanced tor
> instances, which recently were at about 60% CPU at the steady state, are
> currently near 100%.
> 
> I am planning to increase the number of instances today.

I increased the number of instances without incident:
https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40173

> I am also seeing a lot of "no address in clientID-to-IP map (capacity
> 10240)" (dozens per second), so I will increase that parameter at the
> same time.

This is among some performance changes that I hope to deploy tomorrow.
I've actually deployed them on the snowflake-02 bridge for testing
already.
https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40086#note_2836854

> https://metrics.torproject.org/collector/recent/bridge-descriptors/extra-infos/
> 
> ```
> @type bridge-extra-info 1.3
> extra-info flakey1 5481936581E23D2D178105D44DB6915AB06BFB7F
> published 2022-09-22 13:18:22
> write-history 2022-09-22 03:48:24 (86400 s) 1571942788096,1624372588544,1540386311168,1503769995264,1541499914240
> read-history 2022-09-22 03:48:24 (86400 s) 1553884182528,1606369537024,1525348965376,1487172212736,1519574591488
> dirreq-stats-end 2022-09-22 05:10:35 (86400 s)
> dirreq-v3-ips ru=13656,us=2120,ir=2056,cn=1384,de=616,by=432,gb=392,??=384,fr=288,in=264,ua=256,ca=168,nl=168,br=152,au=144,es=112,eg=104,it=104,sa=80,pl=72,se=72,tr=72,ae=64,ch=64,mx=64,ro=64,be=48,cz=48,fi=48,jp=48,za=48,at=40,id=40,kz=40,az=32,cl=32,dk=32,il=32,ke=32,kr=32,lt=32,lv=32,ma=32,ng=32,nz=32,pt=32,co=24,ee=24,gr=24,hk=24,hu=24,mu=24,no=24,ph=24,pk=24,tn=24,ar=16,bd=16,bg=16,do=16,dz=16,ge=16,hr=16,ie=16,iq=16,md=16,my=16,rs=16,sg=16,sk=16,th=16,tw=16,ug=16,uz=16,am=8,ap=8,ba=8,bf=8,bh=8,bj=8,bn=8,bo=8,bw=8,ci=8,cm=8,cr=8,cu=8,cv=8,cw=8,cy=8,ec=8,eu=8,ga=8,gh=8,gt=8,gy=8,hn=8,is=8,jm=8,jo=8,kg=8,kh=8,kw=8,ky=8,lb=8,lk=8,lu=8,ly=8,me=8,mk=8,ml=8,mm=8,mo=8,mv=8,mw=8,na=8,ne=8,ni=8,np=8,om=8,pe=8,pr=8,ps=8,py=8,qa=8,re=8,rw=8,sc=8,sd=8,si=8,sn=8,so=8,ss=8,sy=8,tg=8,tm=8,tt=8,tz=8,ve=8,vi=8,vn=8,ye=8,zm=8,zw=8
> dirreq-v3-reqs ru=26032,??=4128,us=3408,ir=2792,cn=2784,de=960,by=664,gb=648,ua=592,fr=512,in=360,ca=280,au=272,nl=264,br=248,es=208,it=184,eg=176,mx=152,ae=144,pl=136,ch=128,tr=120,ro=112,se=112,jp=96,sa=96,fi=88,za=80,at=72,be=72,cz=72,il=64,kr=64,kz=64,az=56,dk=56,hu=56,id=56,lt=56,rs=56,hk=48,ke=48,lv=48,cl=40,co=40,ng=40,no=40,nz=40,ph=40,pk=40,pt=40,ee=32,ge=32,gr=32,ma=32,md=32,mu=32,sg=32,tn=32,am=24,ar=24,bd=24,bg=24,dz=24,ie=24,my=24,sk=24,th=24,tw=24,uz=24,cr=16,cy=16,do=16,ec=16,eu=16,hr=16,iq=16,lk=16,ly=16,mm=16,pe=16,si=16,ug=16,vn=16,ap=8,ba=8,bf=8,bh=8,bj=8,bn=8,bo=8,bw=8,ci=8,cm=8,cu=8,cv=8,cw=8,ga=8,gh=8,gt=8,gy=8,hn=8,is=8,jm=8,jo=8,kg=8,kh=8,kw=8,ky=8,lb=8,lu=8,me=8,mk=8,ml=8,mo=8,mv=8,mw=8,na=8,ne=8,ni=8,np=8,om=8,pr=8,ps=8,py=8,qa=8,re=8,rw=8,sc=8,sd=8,sn=8,so=8,ss=8,sy=8,tg=8,tm=8,tt=8,tz=8,ve=8,vi=8,ye=8,zm=8,zw=8
> bridge-stats-end 2022-09-22 05:10:44 (86400 s)
> bridge-ips ru=18440,ir=5200,us=3624,cn=1880,de=984,gb=656,by=648,??=520,in=472,fr=416,ua=320,nl=264,br=240,ca=232,au=216,eg=176,it=160,es=152,sa=136,pl=128,se=120,tr=120,ae=104,ch=104,mx=104,ro=96,be=80,jp=80,cz=72,fi=72,id=72,mu=72,za=72,at=64,ng=64,kz=56,ma=56,tn=56,hk=48,il=48,pk=48,az=40,cl=40,co=40,dk=40,dz=40,ke=40,kr=40,lt=40,lv=40,no=40,nz=40,pt=40,ar=32,gr=32,ie=32,my=32,ph=32,sg=32,bd=24,bg=24,ee=24,hu=24,iq=24,rs=24,th=24,tw=24,vn=24,zm=24,cr=16,cy=16,do=16,ec=16,ge=16,gt=16,hr=16,kw=16,lk=16,md=16,mm=16,om=16,pe=16,sd=16,sk=16,tz=16,ug=16,uz=16,ve=16,af=8,al=8,am=8,ao=8,ap=8,ba=8,bf=8,bh=8,bj=8,bn=8,bo=8,bw=8,bz=8,ci=8,cm=8,cu=8,cv=8,cw=8,eu=8,ga=8,gh=8,gn=8,gu=8,gy=8,hn=8,is=8,jm=8,jo=8,kg=8,kh=8,ky=8,lb=8,lu=8,ly=8,me=8,mk=8,ml=8,mo=8,mt=8,mv=8,mw=8,na=8,ne=8,ni=8,np=8,pg=8,pr=8,ps=8,py=8,qa=8,re=8,rw=8,sc=8,si=8,sn=8,so=8,sr=8,ss=8,sv=8,sy=8,sz=8,tg=8,tj=8,tm=8,tt=8,uy=8,vi=8,ye=8,zw=8
> ```

One day later, ir has jumped way out in front.

```
dirreq-stats-end 2022-09-23 05:10:35 (86400 s)
dirreq-v3-ips ir=36472,ru=12088,us=5584,cn=1184,de=720,by=448,gb=432,mu=384,??=352,tn=336,fr=328,in=240,nl=224,eg=216,ua=216,ca=160,ma=160,ng=160,br=144,za=144,au=136,it=120,es=104,tr=96,zm=96,ae=88,jp=80,ci=64,pl=64,ro=64,se=64,ch=56,ke=56,mx=56,sa=56,ug=56,fi=48,sd=48,be=40,bf=40,cz=40,hk=40,at=32,dk=32,id=32,il=32,kr=32,kz=32,lv=32,ph=32,pk=32,ar=24,az=24,bd=24,cl=24,gr=24,hu=24,lt=24,mw=24,no=24,nz=24,pt=24,sg=24,sk=24,am=16,bg=16,co=16,cr=16,dz=16,ee=16,ga=16,ge=16,gh=16,ie=16,iq=16,kw=16,md=16,mg=16,my=16,rs=16,sl=16,th=16,tw=16,uz=16,vn=16,af=8,al=8,ao=8,ap=8,aw=8,ba=8,bb=8,bh=8,bi=8,bj=8,bo=8,bw=8,cg=8,cm=8,cu=8,cw=8,cy=8,do=8,ec=8,eu=8,fj=8,gm=8,gq=8,gt=8,gu=8,hn=8,hr=8,is=8,jm=8,jo=8,kg=8,kh=8,ky=8,la=8,lb=8,lk=8,lu=8,ly=8,mk=8,ml=8,mm=8,mt=8,mv=8,mz=8,na=8,ni=8,om=8,pa=8,pe=8,ps=8,py=8,qa=8,re=8,rw=8,sb=8,sc=8,si=8,sn=8,so=8,sr=8,sv=8,sy=8,tg=8,tj=8,tm=8,tt=8,uy=8,ve=8,ye=8,zw=8
dirreq-v3-reqs ir=51832,ru=21040,??=8760,us=7800,cn=2136,de=1136,by=704,gb=664,fr=576,mu=496,tn=480,nl=376,ua=376,in=328,eg=312,ca=296,au=248,ng=240,br=232,ma=216,za=208,es=176,it=176,zm=136,ae=128,jp=128,tr=128,pl=104,ch=96,mx=96,ro=96,ci=88,se=88,ke=80,sa=80,ug=80,cz=72,fi=72,be=64,kr=64,lv=64,sd=64,at=56,bf=56,hk=56,lb=56,ph=56,pk=56,ar=48,id=48,iq=48,az=40,bd=40,dk=40,il=40,kz=40,nz=40,sg=40,cl=32,co=32,hu=32,lt=32,no=32,sk=32,uz=32,am=24,cr=24,ee=24,ga=24,ge=24,gh=24,gr=24,ie=24,md=24,mw=24,my=24,pt=24,rs=24,sl=24,ap=16,bg=16,dz=16,ec=16,eu=16,hr=16,kw=16,lu=16,ly=16,mg=16,th=16,tw=16,vn=16,af=8,al=8,ao=8,aw=8,ba=8,bb=8,bh=8,bi=8,bj=8,bo=8,bw=8,cg=8,cm=8,cu=8,cw=8,cy=8,do=8,fj=8,gm=8,gq=8,gt=8,gu=8,hn=8,is=8,jm=8,jo=8,kg=8,kh=8,ky=8,la=8,lk=8,mk=8,ml=8,mm=8,mt=8,mv=8,mz=8,na=8,ni=8,om=8,pa=8,pe=8,ps=8,py=8,qa=8,re=8,rw=8,sb=8,sc=8,si=8,sn=8,so=8,sr=8,sv=8,sy=8,tg=8,tj=8,tm=8,tt=8,uy=8,ve=8,ye=8,zw=8
bridge-stats-end 2022-09-23 05:10:44 (86400 s)
bridge-ips ir=79192,ru=16840,us=12592,cn=1696,de=1320,mu=968,tn=768,gb=744,by=720,fr=600,??=504,eg=472,ma=416,in=408,nl=392,ng=368,za=304,ua=288,ca=272,au=224,br=208,zm=192,it=176,tr=176,ae=152,ci=152,es=152,jp=144,ro=136,se=128,ug=128,ke=120,sd=112,pl=104,sa=104,ch=96,fi=80,mx=72,be=64,bf=64,cz=64,hk=64,id=64,at=56,kr=56,kz=56,ph=56,pk=56,dk=48,ga=48,lv=48,ar=40,az=40,il=40,no=40,sg=40,bd=32,bg=32,cl=32,co=32,ge=32,gh=32,gr=32,hu=32,lt=32,mw=32,my=32,nz=32,pt=32,sk=32,am=24,ap=24,ee=24,ie=24,iq=24,kw=24,mg=24,rs=24,sl=24,th=24,tw=24,vn=24,af=16,cg=16,cm=16,cr=16,dz=16,ec=16,eu=16,gm=16,hr=16,lu=16,ly=16,md=16,mm=16,om=16,pe=16,sn=16,tg=16,uz=16,al=8,ao=8,aw=8,ba=8,bb=8,bh=8,bi=8,bj=8,bo=8,bs=8,bw=8,cd=8,cu=8,cw=8,cy=8,do=8,et=8,fj=8,gq=8,gt=8,gu=8,hn=8,ht=8,is=8,jo=8,kg=8,kh=8,ky=8,la=8,lb=8,lk=8,mk=8,ml=8,mt=8,mv=8,mz=8,na=8,nc=8,ni=8,np=8,pa=8,pf=8,pg=8,ps=8,py=8,qa=8,re=8,rw=8,sb=8,sc=8,si=8,so=8,sr=8,sv=8,sy=8,sz=8,tj=8,tm=8,tt=8,tz=8,uy=8,ve=8,ye=8,zw=8
```