Icewarp daemons produce high CPU load

[matti2355]

Hello,

we have some strange behavior on our new Icewarp 11.4.4 installation on Debian 8 64bit. The icewarp processes produce very high load although only one user uses the server with outlook sync and webmail. It's a test system. It's installed using mysql on the same server.

Here's a top summary:

top - 07:41:31 up 19:35,  1 user,  load average: 5,09, 5,12, 5,08
Tasks:  99 total,   2 running,  97 sleeping,   0 stopped,   0 zombie
%Cpu0  :  0,5 us, 99,5 sy,  0,0 ni,  0,0 id,  0,0 wa,  0,0 hi,  0,0 si,  0,0 st
%Cpu1  :  0,0 us,100,0 sy,  0,0 ni,  0,0 id,  0,0 wa,  0,0 hi,  0,0 si,  0,0 st
KiB Mem:   1533408 total,  1519768 used,    13640 free,     6424 buffers
KiB Swap:  1048572 total,        0 used,  1048572 free.   594756 cached Mem

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND                                                                                                                           
14304 icewarp   20   0  946716  33764  18308 S  40,7  2,2 410:24.26 cal                                                                                                                               
14367 icewarp   20   0 1223292  32028  17744 S  40,2  2,1 408:04.42 pop3                                                                                                                              
14336 icewarp   20   0 1266684  59008  40492 S  39,8  3,8 409:53.33 im                                                                                                                                
14233 icewarp   20   0 1268436  53256  27448 S  38,8  3,5 410:18.57 control                                                                                                                           
14377 icewarp   20   0 1213896  27072  16416 S  38,8  1,8 407:34.65 smtp                                                                                                                              
14268 icewarp   20   0   48688  13256   6520 S   0,9  0,9  12:34.30 ctasd.bin                                                                                                                         
 3596 root      20   0   82728   5956   5100 S   0,5  0,4   0:00.07 sshd                                                                                                                              
14264 root      20   0  118048   2128   1824 S   0,5  0,1   0:31.01 kavehost                                                                                                                          
20858 root      20   0  745092 374552  14992 S   0,5 24,4   0:09.63 kavscanner                                                                                                                        
    1 root      20   0   28252   4044   2624 S   0,0  0,3   0:02.16 systemd 
.
.
.

As you can see there is a high system load.
I already disabled the search and IPS.
After a reboot it that the load is ok until the services are used. E. g. an IMAP connection is made or the Webclient is used.

So, does someone know this probem?

Thanks in advance.

[jrodeiro]

Same problem over here, can you resolv this?

Thanks.

[jrodeiro]

Same problem here, any solution?

Thanks.

[matti2355]

Not really, sorry.
The support looked at it and could't find the reason for the high load. We found out, that it has to do with the LDAP connection to our AD Server. We used it to sync the AD users to icewarp. But if it is enabled the load rises if the first LDAP user logs in. Disabling the LDAP sync keeps the load low.
But on the other hand we have an equal system in our office and it works pretty good with LDAP sync.

Hope that helps.