It seems that the delay is in the connection. I have played with the backlog queue, the max child, and prefork settings without being able to make it any faster. I am logging in a doing a list command. The mailboxes are all empty so I am not thinking that once the connection is authed it is slow. It is just getting the frontend to open enough connections to the backend. I can't seem to nail down what the problem is. If I connect the stress test to the backend it is very fast less than a second a connection. If I can provide anymore info let me know. I am looking to have over 150,000 boxes they are all pop now but I want to offer IMAP.
--Mike ----- Original Message ----- From: "Ken Murchison" <[EMAIL PROTECTED]> To: "Michael J Farina" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Friday, March 12, 2004 9:54 AM Subject: Re: pop3d proxy > Michael J Farina wrote: > > > Ken, > > > > Is there a way to do PLAIN from the frontends to the backends? The > > servers I am testing are on a isolated network no network traffic other than > > the mail servers. Any help would be appreciated. sasl_maximum_layer:0 didn't > > seem to change the pop3 proxy timing. The server are also dual 1.4s with 2 > > gigs of ram if that helps at all. > > You can do PLAIN, but the frontends will also need to use TLS, since > PLAIN won't be advertised by the backends unless a security layer is in > place. > > Are you saying that there is a delay for every command, or for every > login? Is your stress test only doing one command per login? > > > > > > ----- Original Message ----- > > From: "Ken Murchison" <[EMAIL PROTECTED]> > > To: "Michael J Farina" <[EMAIL PROTECTED]> > > Cc: <[EMAIL PROTECTED]> > > Sent: Thursday, March 11, 2004 4:58 PM > > Subject: Re: pop3d proxy > > > > > > > >>Michael J Farina wrote: > >> > >> > >>>I am setting up a cyrus imap murder for a large number of accounts. In > > > > my > > > >>>stress testing I have noticed that the pop3 proxy has quite a delay. > > > > When I > > > >>>connect directly to a backend I can check mail at a very fast rate about > > > > .5 > > > >>>secs a mailbox. When I connect to the proxy the wait time increases a > > > > ton to > > > >>>about 5 secs. I am thinking I must have a configuration problem. I will > >>>include my imapd.conf and my cyrus.conf I am using cyrus 2.2.3. > >> > >>Once you authenticate and the mailbox is opened on the backend, the > >>proxy just acts as a bitpipe between the client and backend, so there > >>should be very little overhead. > >> > >>You *might* be seeing a slowdown because the frontend is authenticating > >>to the backend using DIGEST-MD5 with a security layer or TLS+PLAIN. In > >>either case you have encrypt/decrypt overhead. > >> > >>If using DIGEST-MD5, you could try setting sasl_maximum_layer:0 on the > >>backend, which will prevent the security layer from being negotiated. > >> > >>Otherwise, the only other delay that I could think of would be network > >>related. > >> > >> > >> > >>>Frontend cyrus.conf > >>> > >>>START { > >>> mboxlist cmd="ctl_cyrusdb -r" > >>>} > >>> > >>># UNIX sockets start with a slash and are put into /var/imap/sockets > >>>SERVICES { > >>> # mupdate database service - must prefork atleast 1 > >>> mupdate cmd="/usr/cyrus/bin/mupdate -m" listen=3905 prefork=1 > >>> > >>> # add or remove based on preferences > >>> imap cmd="proxyd" listen="imap" prefork=5 > >>> pop3 cmd="pop3proxyd" listen="pop3" prefork=5 maxchild=-1 > >>> sieve cmd="timsieved" listen="sieve" prefork=0 > >>> > >>> lmtp cmd="lmtpproxyd" listen="/var/imap/socket/lmtp" > > > > prefork=0 > > > >>>} > >>> > >>>EVENTS { > >>> checkpoint cmd="ctl_cyrusdb -c" period=5 > >>>} > >>> > >>>Frontend imapd.conf > >>> > >>>configdirectory: /var/imap > >>>partition-default: /tmp > >>>admins: cyrus > >>>sasl_pwcheck_method: saslauthd > >>>allowplaintext: 1 > >>>mupdate_admin: murder > >>>mupdate_server: frontend > >>>mupdate_password: murder pass > >>>proxy_authname: proxy > >>>proxy_password: proxy pass > >>>unixhierarchysep: 1 > >>>sasl_mech_list: PLAIN > >>> > >>> > >>>Backend cyrus.conf > >>> > >>>START { > >>> recover cmd="ctl_cyrusdb -r" > >>> mupdatepush cmd="ctl_mboxlist -m" > >>>} > >>> > >>># UNIX sockets start with a slash and are put into /var/imap/sockets > >>>SERVICES { > >>> # add or remove based on preferences > >>> imap cmd="imapd" listen="imap" prefork=5 > >>> pop3 cmd="pop3d" listen="pop3" prefork=0 maxchild=-1 > >>> > >>> # at least one LMTP is required for delivery > >>> lmtp cmd="lmtpd" listen="lmtp" prefork=2 > >>> > >>>} > >>>EVENTS { > >>> # this is required > >>> checkpoint cmd="ctl_cyrusdb -c" period=5 > >>>} > >>> > >>>Backend imapd.conf > >>> > >>>configdirectory: /var/imap > >>>partition-default: /var/spool/imap > >>>admins: cyrus > >>>mupdate_server: frontend > >>>mupdate_authname: murder > >>>mupdate_password: murder pass > >>> > >>>allowplaintext: yes > >>>sasl_pwcheck_method: saslauthd > >>>sasl_mech_list: PLAIN DIGEST-MD5 > >>>proxyservers: proxy > >>>unixhierarchysep: 1 > >>>defaultacl: anyone rsd > >>> > >>> > >>>--- > >>>Home Page: http://asg.web.cmu.edu/cyrus > >>>Wiki/FAQ: http://cyruswiki.andrew.cmu.edu > >>>List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html > >>> > >> > >> > >>-- > >>Kenneth Murchison Oceana Matrix Ltd. > >>Software Engineer 21 Princeton Place > >>716-662-8973 x26 Orchard Park, NY 14127 > >>--PGP Public Key-- http://www.oceana.com/~ken/ksm.pgp > >> > >> > > > > > > --- > > Home Page: http://asg.web.cmu.edu/cyrus > > Wiki/FAQ: http://cyruswiki.andrew.cmu.edu > > List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html > > > > > -- > Kenneth Murchison Oceana Matrix Ltd. > Software Engineer 21 Princeton Place > 716-662-8973 x26 Orchard Park, NY 14127 > --PGP Public Key-- http://www.oceana.com/~ken/ksm.pgp > --- > Home Page: http://asg.web.cmu.edu/cyrus > Wiki/FAQ: http://cyruswiki.andrew.cmu.edu > List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html > > > >