[389-users] Serious write-performance problems on RHEL6

[Steve Holden]

No worries.

I've checked IO issues using iotop, but ns-slapd only makes fleeting appearances there, so I don't *think* it's IO-bound
There are 43 separate slapd threads (according to ' ps -efL | grep -c slapd').

I'd wondered about setting the 389 server as a replica of the production servers, but am not feeling that brave yet!

-----Original Message-----
From: 389-users-bounces at lists.fedoraproject.org [mailto:389-users-bounces at lists.fedoraproject.org] On Behalf Of Dustin Rice
Sent: 31 March 2014 17:59
To: 389-users at lists.fedoraproject.org
Subject: Re: [389-users] Serious write-performance problems on RHEL6

Ah derp, my mistake, I apparently didn't scroll down far enough.

Do you know if the slapd procs are sitting in an IO wait state?

When you run a ps -eLf how many slapd threads are there?

I'm going through a migration from Sun One 5.2 to 389ds also. You can 
setup a 389 DS replica of a Sun One master. It works out pretty well. My 
plan is to slowly replace our Sun One replicas with 389 DS replicas that 
are tied to a 389DS hub. Once all the Sun One replicas have been 
replace, I then promote that 389 DS hub to master and we're done.

On 03/31/2014 09:28 AM, Steve Holden wrote:
> Hi, Dustin
>
> Thanks for the rapid response.
>
> I did - sorry for not making that clearer (it was buried in the footer).
>
> I added indexes for the equivalent attributes from our current servers,
> and then re-indexed all attributes by unchecking and re-checking
> one of the checked boxes for _every_ indexed attribute and clicking "Save".
>
> Since then, I've used the following which I understand re-indexes
> every attribute by default (but let me know if I've misunderstood!)
>
> /usr/lib64/dirsrv/slapd-${HOSTNAME%%.*}/db2index.pl \
> -D "$ADMIN_USER" -w "$ADMIN_PASSWD" -n userRoot -v
>
> Best wishes,
> Steve
>
> -----Original Message-----
> From: 389-users-bounces at lists.fedoraproject.org [mailto:389-users-bounces at lists.fedoraproject.org] On Behalf Of Dustin Rice
> Sent: 31 March 2014 16:37
> To: 389-users at lists.fedoraproject.org
> Subject: Re: [389-users] Serious write-performance problems on RHEL6
>
> When you did your import, did you make sure that your indexes got rebuilt?
>
> On 03/31/2014 08:34 AM, Steve Holden wrote:
>
>> I've hit a snag with my 389 development server; it's performance far worse
>> than the 10 year-old servers it's intended to replace.
> ...
>> The directory contains custom attributes, some of which are CoS,
>> and many of which have been indexed (AFAIK, all attributes have been re-indexed).
>
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-- 
=====================================
Dustin Rice
UNIX System Administrator - CIS
Portland State University
=====================================

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