search for: chibi

Displaying 20 results from an estimated 89 matches for "chibi".

2004 Jun 10
3
"virgin" mail accounts
...ectively. The rationale should be obvious, no frantic user calls about "My mail is not working" when the answer is "Duh, that's because you never ever received one yet". ;) Regards, Christian Balzer -- Christian Balzer Network/Systems Engineer NOC chibi at gol.com Global OnLine Japan/Fusion Network Services http://www.gol.com/
2017 Feb 12
1
dovecot config for 1500 simultaneous connection
...ckend servers? If so, how many IMAP sessions can one proxy server handle (assuming the proxy does authorization using MySQL running on a separate server)? And, could the proxy server be tuned to help in optimizing mostly IDLE backend sessions? > On Feb 12, 2017, at 1:58 AM, Christian Balzer <chibi at gol.com> wrote: > > > Hello, > > On Fri, 10 Feb 2017 14:50:03 -0500 KT Walrus wrote: > >>> 1. 256GB of real RAM, swap is for chums. >> >> Are you sure that 100,000 IMAP sessions wouldn?t work well with SWAP, especially with fast SSD storage (which...
2017 Feb 10
2
dovecot config for 1500 simultaneous connection
...ory at all times. My mail server isn?t that large yet as I haven?t fully deployed Dovecot outside my own small group yet, but it would be nice if scaling Dovecot IMAP to millions of users wasn?t limited to 50,000 IMAP sessions on a server... > On Feb 10, 2017, at 11:07 AM, Christian Balzer <chibi at gol.com> wrote: > > On Fri, 10 Feb 2017 07:59:52 -0500 KT Walrus wrote: > >>> 1500 IMAP sessions will eat up about 3GB alone. >> >> Are you saying that Dovecot needs 2MB of physical memory per IMAP session? >> > That depends on the IMAP session, re...
2017 May 12
2
[BUG] doveadm kick doesn't play well with hibernate
...olutely crucial for us as we need this for our custom mailbox migration functionality. If there's no workaround or fix within 2 months I'll be forced to disable hibernation again (with a heavy heart). Regards, Christian -- Christian Balzer Network/Systems Engineer chibi at gol.com Global OnLine Japan/Rakuten Communications http://www.gol.com/
2017 Feb 13
1
dovecot config for 1500 simultaneous connection
...d that Raid10 give a faster write and read whereas Raid 1 will have slow writes and fast reads the question is will there be huge performance difference between Raid1 and Raid 10 when it comes small files like mail queue ? thanks rajesh ----- Original Message ----- From: Christian Balzer [mailto:chibi at gol.com] To: dovecot at dovecot.org Cc: kevin at my.walr.us Sent: Mon, 13 Feb 2017 10:46:13 +0900 Subject: Hello, On Sun, 12 Feb 2017 08:27:21 -0500 KT Walrus wrote: > Thanks for the info. I do have one further question for you. On your servers that are currently handling 50k IMAP sessio...
2017 Feb 15
1
dovecot config for 1500 simultaneous connection
...y busy doing so while also fitting all 2.7GB of data for about 1 million users into RAM. ############## >>>>>>>>>>>>>>>>>>how do i put all relevant data into the RAM ? thanks rajesh ----- Original Message ----- From: Christian Balzer [mailto:chibi at gol.com] To: dovecot at dovecot.org Sent: Tue, 14 Feb 2017 16:40:01 +0900 Subject: Hello, On Mon, 13 Feb 2017 22:53:23 +0530 Rajesh M wrote: > thanks for your help > > happy to say that the performance dramatically improved after i use the high performance settings from here >...
2017 Feb 10
2
dovecot config for 1500 simultaneous connection
...IMAP sessions will eat up about 3GB alone. Are you saying that Dovecot needs 2MB of physical memory per IMAP session? If I want to support a max 100,000 IMAP sessions per server, I should configure the server to have at least 200GBs of SWAP? > On Feb 10, 2017, at 3:58 AM, Christian Balzer <chibi at gol.com> wrote: > > On Fri, 10 Feb 2017 01:13:20 +0530 Rajesh M wrote: > >> hello >> >> could somebody with experience let me know the dovecot config file settings to handle around 1500 simultaneous connections over pop3 and 1500 connection over imap simultaneous...
2017 Feb 12
0
dovecot config for 1500 simultaneous connection
...tp://www.dovecot.org/list/dovecot/2016-November/106284.html ) Timo mentioned that he's not aware of anybody doing more than 50k per server, something I got licked already and definitely will go to 100k eventually. Regards, Christian > > On Feb 10, 2017, at 11:07 AM, Christian Balzer <chibi at gol.com> wrote: > > > > On Fri, 10 Feb 2017 07:59:52 -0500 KT Walrus wrote: > > > >>> 1500 IMAP sessions will eat up about 3GB alone. > >> > >> Are you saying that Dovecot needs 2MB of physical memory per IMAP session? > >>...
2017 Apr 24
2
IMAP hibernate and scalability in general
...to split and spread out sessions between hibernate processes? It's clearly something more involved than "fill up one and then fill up the next" or we would see 16k on the old one and a few on the new one. Christian -- Christian Balzer Network/Systems Engineer chibi at gol.com Global OnLine Japan/Rakuten Communications http://www.gol.com/
2017 Apr 06
3
IMAP hibernate and scalability in general
On 6 Apr 2017, at 9.56, Christian Balzer <chibi at gol.com> wrote: > >> For no particular reason besides wanting to start conservatively, we've got >> client_limit set to 50 on the hibernate procs (with 1100 total hibernated >> connections on the box I'm looking at). At only a little over a meg each, >> I...
2017 Apr 24
2
V1 Dovecot POP3 index migrate to V3
Hi, I've very old Dovecot version so I'm trying to migrate new disk and current version of dovecot. But POP3 accounts have "version 1" .INBOX/dovecot-uidlist files so clients download the messages again. How can achieve not to download to mailbox after copy to new disk? Is there any script or something to migrate index v1 to v3? thanks for your suggestions.
2016 Nov 29
2
auth client limit versus service count of mail processes
...rence in Dovecot's logic between a mail service that has a service count of 1 versus one with >1? 2. Any way to get the process recycling for IMAP going w/o setting the fd limit to a ridiculous amount? Thanks, Christian -- Christian Balzer Network/Systems Engineer chibi at gol.com Global OnLine Japan/Rakuten Communications http://www.gol.com/
2017 Feb 10
0
dovecot config for 1500 simultaneous connection
...when doing their obviously flawed cleanup on exit. Some things clearly do NOT scale well. My current goal is to have 100k capable servers that work well, 200k in a failover scenario, but that won't be particular enjoyable. Christian > > On Feb 10, 2017, at 3:58 AM, Christian Balzer <chibi at gol.com> wrote: > > > > On Fri, 10 Feb 2017 01:13:20 +0530 Rajesh M wrote: > > > >> hello > >> > >> could somebody with experience let me know the dovecot config file settings to handle around 1500 simultaneous connections over pop3 and 1500 c...
2017 Feb 10
1
dovecot config for 1500 simultaneous connection
----- Original Message ----- From: Christian Balzer [mailto:chibi at gol.com] To: dovecot at dovecot.org Cc: 24x7server at 24x7server.net Sent: Fri, 10 Feb 2017 17:58:58 +0900 Subject: On Fri, 10 Feb 2017 01:13:20 +0530 Rajesh M wrote: > hello > > could somebody with experience let me know the dovecot config file settings to handle around 1500 simult...
2017 Feb 21
5
Scaling to 10 Million IMAP sessions on a single server
I just read this blog: https://mrotaru.wordpress.com/2013/10/10/scaling-to-12-million-concurrent-connections-how-migratorydata-did-it/ <https://mrotaru.wordpress.com/2013/10/10/scaling-to-12-million-concurrent-connections-how-migratorydata-did-it/> about scaling to 12 Million Concurrent Connections on a single server and it got me thinking. Would it be possible to scale Dovecot IMAP server
2004 May 18
4
POP (dot) locks
...g methods are available. #mbox_read_dotlock = no --- means that if the only other reading accesses to a (mbox style in this case here) mailbox are via other dovecot processes everything will be fine? Regards, Christian Balzer -- Christian Balzer Network/Systems Engineer NOC chibi at gol.com Global OnLine Japan/Fusion Network Services http://www.gol.com/
2009 Jun 21
1
Need help installing xts package
..."xts",dependencies=T) I received a lot of "ERROR: compilation failed for package" errors when R tries to install xts dependencies. I do not understand this behavior. I notice one thing. It complains. ERROR: compilation failed for package 'Hmisc' ** Removing '/home/chibi/R/x86_64-unknown-linux-gnu-library/2.8/Hmisc' * Installing *source* package 'Design' ... ** libs WARNING: R include directory is empty -- perhaps need to install R-devel.rpm or similar Is it because I need R-devel.rpm? What is it? I search google around and cannot find any explanation...
2004 Jul 22
4
0.99.10.x auth memory leak?
....07 dovecot-auth --- So, I guess my questions to Timo are: Think it's leaky and any idea where? Given the load, would a single auth process be a bad idea? (it is a quite fast dual opteron box) Regards, Christian Balzer -- Christian Balzer Network/Systems Engineer NOC chibi at gol.com Global OnLine Japan/Fusion Network Services http://www.gol.com/
2019 Aug 31
1
CVE-2019-11500: Critical vulnerability in Dovecot and Pigeonhole
...> > I personally think re-connecting clients are normal operations so I > wouldn't bother. But you could override the stop action in the systemd > unit if you have local reasons that warrant such a hack. > -- Christian Balzer Network/Systems Engineer chibi at gol.com Rakuten Mobile Inc.
2017 Apr 30
1
IMAP hibernate and scalability in general
On 24 Apr 2017, at 15.41, Timo Sirainen <tss at iki.fi> wrote: > > On 24 Apr 2017, at 4.04, Christian Balzer <chibi at gol.com <mailto:chibi at gol.com>> wrote: >> >> >> Hello, >> >> Just to follow up on this, we've hit over 16k (default client limit here) >> hibernated sessions: >> --- >> dovecot 119157 0.1 0.0 63404 56140 ? S Apr01...