On 08/05/2010 06:02 AM, Sebastian Hagedorn wrote: > --On 2. August 2010 09:13:29 -0800 Matthew Schumacher > <matt.s@xxxxxxxxxxxxx> wrote: > >> I have the latest cyrus 2.3.16 but I run into frequent pop lock issues >> where the pop3 server process just won't timeout and it locks the >> account. I have used a patch followed on this list that allows me to >> set a pop3timeout less than 10 minutes and currently it's set at 3 >> minutes but that didn't help because the server doesn't seem to honor >> any timeout. >> >> To test that the client isn't sending anything, I connected to the >> process with strace and it shows absolutely nothing going: >> >> root@server:/var/log# time strace -p 16996 >> Process 16996 attached - interrupt to quit >> write(1, "3nI8\212S%\315\n\221\363m\213\203\377\3101\30(\334\332"..., >> 2762 >> >> <unfinished ...> >> Process 16996 detached >> >> real 17m0.327s >> user 0m0.000s >> sys 0m0.004s >> >> >> >> It looks like it's stuck on a write of some kind, but that is blocking >> the timeout. >> >> Anyone have any ideas? This problem is causing upper management to want >> to switch to exchange and I really don't want to deal with that. > What OS are you using? It almost sounds like your Cyrus is using /dev/random instead of /dev/urandom. Are you using a packaged version of Cyrus or one you compiled yourself? > FWIW, there *used* to be many problems like that, but that was in > earlier releases. I worked with the developers to fix those issues. At > our site we haven't had that problem since (we're running 2.3.14 now), > so I'm not sure why you're still seeing any. FWIW, the stuck process > that we saw were all TLS or SSL connections of dial-up clients. When the > dial-up connection got dropped at the wrong moment, the processes stuck > around forever. Before the fix I had implemented a cronjob that > regularly killed old pop3 processes, because no pop3 process should live > longer than maybe 30 minutes ... > > Check the archive for "stuck processes" for details. > > > > ---- > Cyrus Home Page: http://cyrusimap.web.cmu.edu/ > Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki > List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
