Re: (ITS#4702) out-of-memory on huge DB ?

[Paolo.Rossi.con@h3g.it]

> 4GB is the memory limit on 32-bit Solaris, IIRC.  Just like it is  
> 2GB on 32-bit linux.  Try building everything 64-bit.


I'll give a check.

> Another thing to try, from when I ran my servers on Solaris, is to  
> fix the limits in /etc/system for the maximum amount of memory that  
> can be allocated.  I vaguely recall having to do this for my  
> Solaris systems.

uhm, maybe you referred "data seg size" ?
now, is set to "unlimited"

now I'm trying with ulimit -d 1024000, but now slapd have reached 1106MB


> Oh, and with BDB on Solaris, you want to use the "shm_key" flag in  
> slapd.conf to use shared memory segments, when running on SPARC.
> Here's the last portions of /etc/system on my old Solaris LDAP  
> servers:
>
> * turn off executable stacks
> set noexec_user_stack     = 1
> set noexec_user_stack_log = 1
> * increase the size of the kernel stack to 24k for Solaris 8/64-bit
> set rpcmod:svc_default_stksize=0x6000
> set lwp_default_stksize=0x6000
> * force load the shared module kernel information.
> forceload: sys/shmsys
> * allow shared memory segments of up to 3 GB (default 1MB)
> * See http://www.sun.com/sun-on-net/itworld/UIR960101perf.html
> set shmsys:shminfo_shmmax=3221225472
> * Increase memory performance when filesystem is being heavily used.
> * See http://www.sun.com/sun-on-net/performance/priority_paging.html
> set priority_paging=1
> * Increase memory performance when filesystem is being heavily used.
> * See http://www.samag.com/documents/s=1323/sam0110e/0110e.htm
> set maxpgio=25468
> set slowscan=500
> * autoup influences how much RAM is checked by fsflush every 5  
> seconds.
> * Default = 30. Increase autoup to decrease mem management overhead.
> * See http://docs.sun.com/db/doc/806-7009/6jftnqsin?a=view
> set autoup = 60
> * Up tcp conn hash size.  Defaults to 256.
> * See http://www.deny-all.com/en/solsecu/tech/tuning.html
> set tcp:tcp_conn_hash_size = 16384
> * Up file descriptor limit.  Defaults to 1024.
> set rlim_fd_max = 16384
>

This is mine:

set shmsys:shminfo_shmmax=2147483648
set shmsys:shminfo_shmmin=100
set shmsys:shminfo_shmmni=100
set shmsys:shminfo_shmseg=100
set semsys:seminfo_semmap=64
set semsys:seminfo_semmni=4096
set semsys:seminfo_semmns=4096
set semsys:seminfo_semmnu=4096
set semsys:seminfo_semume=64
set semsys:seminfo_semmsl=100


Thx for details, I will cross check if I miss somethings

Paolo Rossi