On 10/6/10 11:26 PM, Brandon Davidson wrote:
I do have one more idea I'll throw out there. Everything I've got here
is virtual. I only have the one Dovecot/Postfix server running now, and
the impression I get from you all is that that should be adequate for my
load. What would the collective o
Chris,
On 10/6/10 9:42 PM, "Chris Hobbs" wrote:
> 3) Modified my NFS mount with noatime to reduce i/o hits there. Need to
> figure out what Brad's suggestions about readahead on the server mean.
It's been a while since I mucked with Linux as a NFS server, I've been on
Netapp for a while. There
On Wed, 06 Oct 2010 21:42:57 -0700, Chris Hobbs
wrote:
> For documentation's sake, here's what I've done so far:
>
> I do have one more idea I'll throw out there. Everything I've got
> here is virtual. I only have the one Dovecot/Postfix server running
> now, and the impression I get from you all
For documentation's sake, here's what I've done so far:
1) Implemented Timo's fixes to my config file (fixed shared INDEX,
adjusted nfs settings for reality of only one server hitting it)
2) installed imapproxy on the webmail server at the recommendation of
the developers of that product (SO
Chris,
> -Original Message-
> Subject: Re: [Dovecot] Significant performance problems
>
> Try bumping up the RAM on both servers to 8+GB, and make sure that you
> don't have any mount options that would prevent the client from
caching
> data - noac for example is a
Chris,
> -Original Message-
> Subject: [Dovecot] Significant performance problems
>
> I'm sure my issues are a result of misconfiguration, but I'm hoping
> someone can point me in the right direction. I'm getting pressure to
> move us back to GroupWise,
On 10/6/10 6:28 PM, Rick Romero wrote:
Is your disk a virtual disk as well? Have you checked performance?
Something like:
| hdparm -tT /dev/sda|
On a ZFS RAID 10 of 10 7200RPM SATA drives, I get about 100MB/s
At work we have an EMC SAN, and I get like 350MB/s on that beast - but
if this is
On 10/6/2010 7:41 PM, Chris Hobbs wrote:
On 10/6/10 5:22 PM, Timo Sirainen wrote: login_processes_count: 20
Probably could use less then 20.
login_max_connections: 64
And this could be higher. In general you should have maybe 1-2x the
number of login processes than CPU cores.
Since this is
On 10/6/10 5:22 PM, Timo Sirainen wrote:
Is the load CPU load or disk I/O load? If I/O load, what NFS
operations are peaking there, or all of them? Pretty graphs of nfsstat
output would be nice.
If I'm reading the output of our monitoring system correctly, the CPU is
spending quite a bit of
imapproxy can only take you from "doesn't work" to "might as well not work",
ime. If at all possible look into a stateful web client.
-bdh
On Oct 6, 2010, at 6:32 PM, Chris Hobbs wrote:
> Hi all,
>
> I'm sure my issues are a result of misconfiguration, but I'm hoping someone
> can point me
On 7.10.2010, at 0.32, Chris Hobbs wrote:
> We currently see load averages spiking into the 20-30 range. When this
> happens, service crawls to a near standstill, and ultimately the SOGo client
> starts crashing out.
Is the load CPU load or disk I/O load? If I/O load, what NFS operations are
p
Hi all,
I'm sure my issues are a result of misconfiguration, but I'm hoping
someone can point me in the right direction. I'm getting pressure to
move us back to GroupWise, which I desperately want to avoid :-/
We're running dovecot 1.2.9 on Ubuntu 10.4 LTS+postfix. The server is a
VM with 1
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