>>>>> "F" == Freerk J Bosscha <[EMAIL PROTECTED]> writes: F> Date: Thu, 19 Dec 2002 21:04:33 +0100 F> To: [EMAIL PROTECTED]
F> I notice the following problem on my mail-system: F> When the system load increases, once in a while, the number of tls F> sessions explode (up to 2500 processes) and no user is connected to it. F> During this, the system slows down and the only thing I can do is stop F> and start the cyrus daemons. F> Has anyone else noticed the same problem F> If you need additional info, please ask I have noticed not same but similar phenomena. I am running cyrus-2.2 ( alfa or even pre-alfa ) plus MySQL modules plus Sendmail 8.12.5 on FreeBSD 4.6.1-RELEASE-p10 and occasionally the following errors in logs happen: Dec 19 17:01:31 horse pop3[5033]: IOERROR: opening /var/spool/imap/domain/wm.west-call.com/user^multikom/cyrus.cache: Too many open files It keeps going that way for a few minutes and then comes back to normal operation. The whole system's load in general is not big; max. processor usage is about 25%. The impression is -- sometimes cyrus or some its routine starts to consume lots of file descriptors. I used lsof for checking open files when the error took place and saw lots of files opened by pop3d. The exact lsof output seems to me too large to post here; you can see it at http://sm.msk.ru/cyrus-lsof.txt For security reasons I have omitted: - files opened by mysql -- 136 entries - files contained /lib/ -- 430 entries - files opened by miscellaneous programs -- 192 entries total Honestly, I always feel a bit nervous running such kind of software as my programmer's experience tells me: it must be a bug! Could anybody please help me to fix that ? Below are some kernel parameters which I believe are related to max. open files. Their values seem to me be adequate for my situation -- please correct if I am wrong. kern.maxvnodes: 40204 kern.maxproc: 8212 kern.maxfiles: 24636 kern.maxfilesperproc: 14781 kern.maxprocperuid: 7390 kern.ipc.maxsockets: 16424 kern.openfiles: 1732 kern.maxusers: 512 user.stream_max: 20 user.tzname_max: 255 I would be glad to give more information if necessary as well as trace/debug the code here. Thanks, -- ------------------------------------------------------------------------ Sergey Mukhin | Head of Internet department | http://sm.msk.ru/ WestCall LTD, Moscow, Russia | SM45-RIPE ------------------------------------------------------------------------ * If you can't learn do it well learn to enjoy doing it badly. * ------------------------------------------------------------------------
