[Dovecot] outlook 2007 very slow.
kuizhang at gmail.com
Wed Sep 28 23:00:27 EEST 2011
On Tue, Sep 27, 2011 at 10:42 PM, Stan Hoeppner <stan at hardwarefreak.com> wrote:
> On 9/27/2011 4:50 PM, Kui Zhang wrote:
>>> I think if you disable the new local indexing features in TB then it
>>> should start running fairly decently?
>> I had indexing disabled... that did not help much.
>> TB work better after I have these settings...
>> mail.imap.expunge_after_delete true
>> mail.imap.expunge_option 2
>> mail.server.default.autosync_offline_stores false
>> mail.server.default.offline_download false
>> mail.server.default.autosync_max_age_days 14
>> I think mail.imap.expunge_after_delete might have caused mdbox limit
>> problem I had before... but not confirmed.
> What, exactly, was the nature of the performance problem you originally
> mentioned to start this thread, the mailbox with the thousands of sub
This thread might be getting little off topic.
It was for inotify loop on server side during idle (outlook 2k7), with
approximate 2.1k folders.
> With GLODA and local synchronization disabled, using 1 IMAP connection
> instead of the default 5, disabling IDLE and using check interval seconds,
> and using the default:
I have not notice looping on idle when client using Thunderbird. So it
might be outlook specific.
> mail.server.default.check_all_folders_for_new FALSE
Not feasible. Few folders need to be checked periodically...
> then you should have excellent performance with TB regardless of the number
> of folders in a mailbox. Unless maybe the hardware or net pipe are lacking.
Ya, but TB would be doing less work.
> What are the specs of the client machine in question? What CPU/freq. Maybe
> more importantly, what is the link speed of the network between this PC and
> the Dovecot server? LAN or WAN?
avg ttl = 0.5ms
Sustain 10-12MB/s, concurrent connections, from 5+ workstations.
No load issues recorded on the server side.
The clients have 8GB of ram, athlon II X4 640 quad core. they should
have enough juice...
On an athlon 3200, 2G Ram, I did some tests on an account, with 3GB on
disk, approximate 100k emails, and 30 folders.
on the client side, when no mail client running.
450-500MB ram used.
CPU at 1-2%
TB hangs on start up, for extent period of time. cpu at 100%, ram at 1
- 1.2 GB used. CPU usage almost always at 100%. And it hangs from time
to time. The client side disk usage for TB is around 200MB… why would
it need 500MB of ram? This is something I will bring up with the
With claws-mail, cpu goes up depending on amount of email in the
folder. And cpu usage drop almost immediately after folder switch.
around 480 – 520 MB ram used. So the client box is not too slow.
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