[rt-users] RT Slow to add and remove group members

[Todd Chapman]

Ruslan,

Thanks for the feedback. The group happens to be an AdminCc on many
queues with lots of members. Do you think that matters?

On Mon, Dec 13, 2010 at 8:39 PM, Ruslan Zakirov <ruz at bestpractical.com> wrote:
> On Tue, Dec 14, 2010 at 12:27 AM, Todd Chapman <todd at chaka.net> wrote:
>> Our production RT instance (3.6.3 - old, I know) takes a really,
>> really long time to add and remove group members.
>>
>> Our database is MySQL and the CachedGroupMembers table has the index:
>> KEY `CachedGroupMembers3` (`MemberId`,`ImmediateParentId`)
>
> I recall that index on Via is relevant for the shredder, so may be
> it's also relevant for removing a member as it also means dropping
> records. Without full SQL log it's hard to say. It's better to write a
> script that adds a user to a group and deletes him right after. Use
> this script to collect all queries with hi-res timings. All queries
> required to see queries that are executed many times even if those are
> quite fast.
>
>> What can we do to improve the situation (yes, I would be upgrading if
>> that were possible at the moment)?
>>
>> Would running shrink_cgm_table.pl be a good idea?
>
> Shrinking would make lookups faster. Let's say 30% faster as table
> gets ~30% smaller. As far as I know there is no harm in running it on
> 3.6.x.
>
>> Thanks!
>>
>> -Todd
>>
>
>
>
> --
> Best regards, Ruslan.
>