[389-users] Fedora DS with virtual machines

[John A. Sullivan III]

Likewise, we are running in VServer (www.linux-vserver.org) with no
problems at all but our environment is currently much smaller - John

On Tue, 2009-07-14 at 12:42 +1000, Luke Bigum wrote:
> Hey Nick,
> 
> We run Fedora DS inside Virtuozzo VEs (not VMWare) and don't have any capacity concerns, our environment sounds like a good tenth the size of yours though. Each VE (there's 2) has only half a GB of RAM and does about 100 connections a minute, however our LDAP database is very small, so the memory we've allocated is massive overkill. In terms of CPU usage, the VE does practically nothing.
> 
> I wouldn't think you'd need much more RAM over the size of your LDAP database files, so unless you've got 8GB of LDAP information, 8GB of RAM sounds a lot to me. Our LDAP database is only about 40MB, which is close to the RAM usage of the VE.
> 
> Our stats, might help you decide on what you need. Maybe someone more knowledgeable in the DS internals could explain the large virtual table size.
> 
> USER      PR  NI  VIRT  RES  SHR S %CPU    TIME+  %MEM COMMAND                                            
> nobody    18   0  601m  39m  18m S    0  16:29.95  7.7 ns-slapd
> 
> [root at host:/var/lib/dirsrv/slapd-host]# du -sh .
> 38M     .
> 
> Luke Bigum
> Systems Administrator
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> Level 1, 100 Ipswich Road Woolloongabba QLD 4102
> 
> 
> 
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> 
> -----Original Message-----
> From: fedora-directory-users-bounces at redhat.com [mailto:fedora-directory-users-bounces at redhat.com] On Behalf Of Nick Gresham
> Sent: Tuesday 14 July 2009 12:18 PM
> To: fedora-directory-users at redhat.com
> Subject: [389-users] Fedora DS with virtual machines
> 
> Hi All
> 
> Does anyone have any experience running DS in a virtual machine? Our  
> current LDAP infrastructure is quite busy, 500-1000 connections/ 
> minute, with >6.5 million operations per day. The VMs will have up to  
> 8GB of RAM, though we think we'll only need 6.
> 
> We're performing testing with slamd, but it's hard to get truly  
> representative stress testing using this tool I think.
> 
> What has your experience been like? Any snafus to watch out for?
> 
> Thanks,
> Nick
> 
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-- 
John A. Sullivan III
Open Source Development Corporation
+1 207-985-7880
jsullivan at opensourcedevel.com

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