Re: Bacula within Proxmox VMs - performance discussion

Am 29.04.26 um 14:39 schrieb Heitor Faria:
> Hello Stefan,
> 
>     Things work, but I only see around 50-70 MB/s for backups.
> 
> You obviously have a bottleneck. You need to start measuring: network 
> (iperf); disk writes, reads, your tree walk (e.g. time find /your/path - 
> type f > /dev/null) etc.

I replaced the virtual disk controller in the client from virtio to scsi.

And enabled SSD emulation for that disk.

Changed little ... the disk is read with around 70 MB/s according to 
atop -> shown as "busy 80%" (with virtio it was even higher).

I also checked the mount options for things like "noatime" (ext4).

SSD Emulation might be wrong:

I didn't configure that server, so I just found that the larger 
datastore consists of HDDs: 4x Seagate Exos 28 TB in some kind of ZFS 
pool (!) with raidz2, as far as I see.

hm, this might be the reason for some unwanted overhead here.

Let me repeat: not my idea, not my setup ;-)

> By coincidence, I just published my personal Proxmox Backup Plugin for 
> Bacula Community, which supports the latest Proxmox Backup APIs and 
> provides all PBS functions too: https://www.linkedin.com/posts/ 
> heitorbacula_podheitor-plugin-de-backup-replica%C3%A7%C3%A3o- 
> activity-7455206154382782464-6GS_? 
> utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAACcSp4BYjaTUSVxav5iossfBRxcPrLdSJM <https://www.linkedin.com/posts/heitorbacula_podheitor-plugin-de-backup-replica%C3%A7%C3%A3o-activity-7455206154382782464-6GS_?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAACcSp4BYjaTUSVxav5iossfBRxcPrLdSJM>
> PVT if you want to test it.

thanks, not right now.