dovecot - Apr 2018 - GFS2 writes extremely slow

Hello all,
We are facing extremely slow GFS2 issues in Redhat 7 64 bit. Backend is 16 Gbps
FC SAN so no issues there.

I have scoured the entire (anyways most of the) Internet and arrived at the
following settings.

mmap_disable = yes
mail_fsync = always
mail_nfs_storage = yes
mail_nfs_index = yes
mmap_disable = yes
lock_method = fcntl

Did a systemctl restart dovecot and did not find any major improvement.
Can you please help.

Regards
Durga Prasad


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On 05.04.2018 15:08, DurgaPrasad - DatasoftComnet wrote:
> Hello all,
> We are facing extremely slow GFS2 issues in Redhat 7 64 bit. Backend is 16
Gbps FC SAN so no issues there.
>
> I have scoured the entire (anyways most of the) Internet and arrived at the
following settings.
>
> mmap_disable = yes
This is ok
> mail_fsync = always
Try changing to never
> mail_nfs_storage = yes
> mail_nfs_index = yes
These you should not use.
> mmap_disable = yes
This is twice here.
> lock_method = fcntl
>
> Did a systemctl restart dovecot and did not find any major improvement.
> Can you please help.
>
> Regards
> Durga Prasad
>
>
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> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
Aki