Hi again, I'm having an issue with your reproducer, it doesn't work at all for me and I'm a bit surprized by this :
On Wed, Mar 08, 2017 at 10:09:25PM +0800, longhb wrote: > [PATCH] BUG/MAJOR: stream: fix tcp half connection expire causes cpu 100% > > Repetition condition: > haproxy config: > global: > tune.bufsize 10485760 > defaults > timeout server-fin 90s > timeout client-fin 90s > backend node2 > mode tcp > timeout server 900s > timeout connect 10s > server def 127.0.0.1:3333 > frontend fe_api > mode tcp > timeout client 900s > bind :1990 > use_backend node2 > timeout server-fin shorter than timeout server, the backend server > sends data, this package is left in the cache of haproxy, the backend > server continue sending fin package, haproxy recv fin package. this > time the session information is as follows: > 0x2373470: proto=tcpv4 src=127.0.0.1:39513 fe=fe_api be=node2 > srv=def ts=08 age=1s calls=3 > rq[f=848000h,i=0,an=00h,rx=14m58s,wx=,ax=] > rp[f=8004c020h,i=0,an=00h,rx=,wx=14m58s,ax=] s0=[7,0h,fd=6,ex=] > s1=[7,18h,fd=7,ex=] exp=14m58s > rp has set the CF_SHUTR state, next, the client sends the fin package, > session information is as follows: > 0x2373470: proto=tcpv4 src=127.0.0.1:39513 fe=fe_api be=node2 > srv=def ts=08 age=38s calls=4 rq[f=84a020h,i=0,an=00h,rx=,wx=,ax=] > rp[f=8004c020h,i=0,an=00h,rx=1m11s,wx=14m21s,ax=] s0=[7,0h,fd=6,ex=] > s1=[9,10h,fd=7,ex=] exp=1m11s Here, as you mentionned, both remotes have sent their FIN so once the data are transferred the sessions should close. So I'm definitely missing something. Does the server (or the client) send more data than the buffer can store ? Does one of the other side refrain from reading all the data ? I've tried various such scenarios and I cannot reproduce your situation unfortunately. I have an idea of how to definitely get rid of all this mess but I have no way to validate that it will work in your case. Any help would be much appreciated. BTW, if you want to have more detailed session dumps, you can type "show sess <ptr>" or "show sess all", you'll get many more details about the internals. Also, could you tell me what version you are using ? Thanks! Willy
