On Thu, Mar 13, 2014, at 04:18 AM, David R Bosso wrote:
I've been wondering if anyone has any positive experience with using recent XFS.
We use XFS on 5 backends (virtual servers, Scientific Linux 6) with 15
partitions altogether (500 to 800 GB each) for many years without serious
crashes.
On Thu, Mar 13, 2014, at 04:18 AM, David R Bosso wrote:
> I've been wondering if anyone has any positive experience with using recent
> XFS.
This question comes up every so often. I tried a couple of years back, and the
server crashed within 6 hours under the heavy load of copying data in, and
On Thu, Mar 13, 2014, at 04:18 AM, David R Bosso wrote:
> Just curious about what filesystem (and any special mount options) you're
> using these days for large cyrus stores. We've been using ext4 for a while
> now (we used to use reiser) and have seen performance degradation over
> time. I've
--On March 12, 2014 11:53:03 PM +1100 Bron Gondwana
wrote:
>
> Looks like on a medium-loaded server we have about 15,000 connections open
> at the moment. It's about 40% masters, 40% replicas, 20% unallocated.
>
>> About disk, what is the high size of a single partition managed by Cyrus?
>
> We
On Wed, Mar 12, 2014, at 08:11 PM, Marco wrote:
> > On Mon, Mar 10, 2014, at 07:49 PM, Marco wrote:
> >> With 8GB RAM,
> >
> > I would recommend you increase that...
> [...]
> > As an interesting datapoint, the big ones cost about US$20k fully
> > stocked, including 40Tb of RAID6 storage for emai
> On Mon, Mar 10, 2014, at 07:49 PM, Marco wrote:
>> With 8GB RAM,
>
> I would recommend you increase that...
[...]
> As an interesting datapoint, the big ones cost about US$20k fully
> stocked, including 40Tb of RAID6 storage for email, plus 6Tb of
> RAID1 for search indexes and 800Gb of RAID1
On Mon, 10 Mar 2014, Marco wrote:
> My server is:
> Red Hat Enterprise Linux Server release 6.3 (Santiago)
> Without problems I read something like this:
>
> total used free sharedbuffers cached
> Mem: 80619767651020 410956 01355964
On Mon, Mar 10, 2014, at 07:49 PM, Marco wrote:
> With 8GB RAM,
I would recommend you increase that... even before you swap, you'll be seeing a
drop in performance as hot files (indexes, mailboxes.db) get evicted from
cache. Memory is relatively cheap these days.
I realise you may be constrain
[...]
> So best would be to use pmap on a "typical" imapd on your system and
> add some margin for additional helper around to get a estimate how
> far you can get.
I'll try to understand carefully. I estimated memory usage with 'ps'
and the RSS field. I'm trying with pmap. I now see value
Zitat von Marco :
Hello cyrus users,
I have a Cyrus-imapd server with 2400 mailboxes imap accessed by
Open-Xchange client. Days ago this Cyrus-Imapd server experiences an
Out of Memory and it starts to sacrifice childs:
In average I have about 400 max simoultaneous connections and I have
n
Hello cyrus users,
I have a Cyrus-imapd server with 2400 mailboxes imap accessed by
Open-Xchange client. Days ago this Cyrus-Imapd server experiences an
Out of Memory and it starts to sacrifice childs:
2014-03-04T15:25:48.927562+01:00 ucstore-csi kernel: imapd: page
allocation failure. or
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