Issues with FlowCleaner on a spam server.

[Bas Smeelen]

On 10/06/2010 09:40 AM, perikillo wrote:
> Hi my friends I have a big issue that I still cannot track what is
> causing that my server stop working.
>   
may be this bug?
http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/146792
a "fix" is also in the report
> I have a spam gateway running:
>
> spamassassin
> clamavis
> amavis
> apache+mailgraph
> postfix
> bacula client
> apcupsd client
>
> My server is running freebsd 8.0-p2 AMD64. Raid-1.
>
> Copyright (c) 1992-2009 The FreeBSD Project.
> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
>         The Regents of the University of California. All rights reserved.
> FreeBSD is a registered trademark of The FreeBSD Foundation.
> FreeBSD 8.0-RELEASE-p2 #5: Mon May 10 23:23:20 PDT 2010
>     root at filter.oakwest.com:/usr/obj/usr/src/sys/SPAMKER
> Timecounter "i8254" frequency 1193182 Hz quality 0
> CPU: Intel(R) Xeon(R) CPU           E3110  @ 3.00GHz (2999.68-MHz K8-class CPU)
>   Origin = "GenuineIntel"  Id = 0x1067a  Stepping = 10
>   Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
>   Features2=0x408e3fd<SSE3,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,XSAVE>
>   AMD Features=0x20100800<SYSCALL,NX,LM>
>   AMD Features2=0x1<LAHF>
>   TSC: P-state invariant
> real memory  = 4294967296 (4096 MB)
> avail memory = 4119261184 (3928 MB)
> ACPI APIC Table: <090208 APIC1432>
> FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
> FreeBSD/SMP: 1 package(s) x 2 core(s)
>  cpu0 (BSP): APIC ID:  0
>  cpu1 (AP): APIC ID:  1
>
> For some reason that I still don't know, amavisd stop working, the
> port no longer answer any inbound, postfix, spamd, clamd works,
> amavisd is the issue normally.
>
> My server can work for a month, each weekend I update the ports and
> upgrade my packages, spamd rules every month are updated.
>
> No issue here, suddenly after a month or 4-5 weeks the server stop
> working, amavisd stop doing the job, I can access the server via ssh
> and see the issue.
>
> This is the 4th time that happens.
>
> My IDLE goes to 50%, when I start debugging I see a process called
> "FlowCleaner" eating 1 CPU.
>
> Always got the PID 20, looks like a internal process, I have been
> searching info about this process but not to much info.
>
> I cannot kill this process, I can restart clamd, spamd, apache,
> bacula, but amavisd is stuck.
>
> If I send a shutdown -r now won't work, my server just hang-up, if I
> press the power button won't work to.
>
> I have to do a cold reboot, I don't have other choice.
>
> I have read logs but don't see any issue (maillog, console, all, message).
>
> One thing to mention, is that every time this happen, my server fan's
> are working more faster that usual, the first day I detect this I
> create a batch that send every 5 minutes the core temperature using
> freebsd coretemp.ko module.
>
> Avg. I got 40'c for each core:
>
> dev.cpu.0.temperature: 42.0C
> dev.cpu.1.temperature: 41.0C
>
> I search around on Intel site and this chip max temp. is 70'c, I had
> never seen this number on my emails, the biggest number had been 54'c
> and this appear before my server got crazy yesterday:
>
> dev.cpu.0.temperature: 53.0C
> dev.cpu.1.temperature: 49.0C
>
> Something is causing this, a spam attack, memory leak mmm I had not
> seen my server use the whole 4GB ever.
>
> My friends, what do u you recommend to me to track this?
>
> Any input will be very appreciated, I got 1 month to track this before
> this happen again, thanks!
>   



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