Re: Performance issue

Em 24/01/2025 12:48, Bill Arlofski via Bacula-users escreveu:
> On 1/24/25 8:36 AM, Roberto Greiner wrote:
>> Hy,
>>
>> I'm having a performance issue with my installation.
>>
>> When I make a backup, to backup is running well bellow of the expected
>> speed. A restore, on the other side, works fine.
>>
>> In one example, I made a (full) backup of one server. The full backup of
>> 137.7GB took 4h 25m.
>>
>> The restore of the same data to the same server was completed in 24
>> minutes. It's not network congestion during backup, as the backup runs
>> in the middle of the night, when no one is using it. It's all local LAN.
>>
>> Any ideas of what could cause this issue? I've considered if it could be
>> due to the ZFS/deduplication load, but my logs/graphs show that the CPU
>> is not being overloaded (I use both Cacti and Zabbix to collect those).
>>
>> Tks,
>>
>>
>> Roberto
>>
>> My setup:
>> Server running Ubuntu 22.04, Bacula 15.0.2, backup is in a local RAID
>> array set as ZFS with compression and deduplication, with a quad core
>> CPU 
> and 8GB RAM. Bacula is using MySQL as backend.
>> The client is a VM, running Ubuntu 24.04, Bacula 15.0.2, with 4 CPUS and
>> 6GB RAM, 1TB storage.
>
> Hello Roberto,
>
> Any chance you have disabled attribute spooling?  ie: `SpoolAttributes 
> = no` in a Job.
>
> This is the first thing that I can see which could inexplicably slow 
> things down.  If you are monitoring the MySQL server/service, have a 
> look to those graphs during the Full backup run time.
>
>
> Best regards,
> Bill
>
SpoolAttributes is set as yes in the JobDefs, and not mentioned anywhere 
else in my setup, so thats not it.

I'm not monitoring the MySQL service specifically, but I can add this. 
In any case, there are no HDD/IO indications of problems here, but I 
will add more specific monitoring.

Tks,

Roberto


-- 
   -----------------------------------------------------
                 Marcos Roberto Greiner

    Os otimistas acham que estamos no melhor dos mundos
     Os pessimistas tem medo de que isto seja verdade
                              James Branch Cabell
   -----------------------------------------------------



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