Re: [Proftpd-user] Exceptional slowness and lost connections 1.3.6b vs 1.3.5e
Mark Moseley <[email protected]>
| Newsgroups | gmane.network.proftpd.user |
|---|---|
| Message-ID | <CAOH1cHkP9-0UyQ9tHx8mfhO19MK1uYvYEMFdcJ_0ZanCRYTWug@mail.gmail.com> |
On Wed, Dec 18, 2019 at 12:40 AM Matus UHLAR - fantomas <[email protected]> wrote: > >On Thu, Dec 5, 2019 at 10:00 AM Matus UHLAR - fantomas > ><[email protected]> wrote: > >> this could be issue of mod_delay, try using "DelayEngine off" > > On 17.12.19 09:56, Tony Stocker wrote: > >I implemented this statement and it did not change behavior. > > OK. > > >> Passive mode or port mode? Can be an ipv6 issue. > > > >Passive mode with a defined set of passive ports (64000-65000) > > that should be enough > > >> >The system in question is running CentOS 6.10 (Final) with the latest > >> >kernel, 2.6.32-754.24.3.el6.x86_64. > >> > >> quite old system. can be something with this system as long. > > > >System is still supported, doesn't EOL until next November. No issues > >with 1.3.5e, only with subsequent versions. > > Subsequent versions may require features not available in centos 6. > > >> can you try debugging? run proftpd interactively "proftpd -nd10" > >> and see the results.. > > > >I've done this and ran the system for approximately ten (10) minutes > >capturing debug output. Should I sanitize and post it (it's > >approximately 10 MiB in size uncompressed)? Or is there something > >specific I should look for in the file and post? > > if you can find the exact places where the delays happened, logs from there > would be good. if not, you could turn on debugging with DebugLevel in > config > and when anyone reports issues, look for logs from that time. > > Otherwise, I'm afraid nobody will dig through 10MiB file. > > > Assuming your 'ps' output shows the IP address that an individual proftpd child is connected to (or get it from netstat), you could lsof+strace your own FTP connection. I.e. connect, fire up strace, and do a DIR or some other slow operation. That might give you some insight into what it's doing. _______________________________________________ ProFTPD Users List <[email protected]> Unsubscribe problems? http://www.proftpd.org/list-unsub.html