So beside the fact that TLS as a cpu cost, LZ4 depending of the type of 
data too. 
I would go for a run without LZ4 first to see how much cpu bonding is your 
FD.

Then you may want to tune TLS to only use cipher that may benefit hardware 
acceleration like certain aes.

Trying without TLS will give you a better view of how much % it cost. You 
may then want to consider ktls 
https://docs.bareos.org/TasksAndConcepts/TransportEncryption.html#enabling-ktls

The global bytes/sec seens at the end is really a "naive" computation 
between the time spend between how much data divided by stop-start 
timestamp.
 
If you're loading tape (the time to load, unload is included), if the job 
is waiting 1 hour an operator to label a volume, that also count.
so so ...

On Wednesday 18 September 2024 at 19:31:29 UTC+2 Markus Dubois wrote:

> Hi,
>
> i'm trying to backup between a directly attached (no switch,. no router in 
> between) a client via a 10G network
>
> ipferf3 shows me:
>
>  [ ID] Interval           Transfer     Bitrate
>
> [  5]   0.00-1.00   sec   393 MBytes  3.30 Gbits/sec                  
>
> [  5]   1.00-2.00   sec   460 MBytes  3.86 Gbits/sec                  
>
> [  5]   2.00-3.00   sec   308 MBytes  2.59 Gbits/sec                  
>
> [  5]   3.00-4.00   sec   397 MBytes  3.33 Gbits/sec                  
>
> [  5]   4.00-5.00   sec   480 MBytes  4.03 Gbits/sec                  
>
> [  5]   5.00-6.00   sec   372 MBytes  3.12 Gbits/sec                  
>
> [  5]   6.00-7.00   sec   476 MBytes  3.99 Gbits/sec                  
>
> [  5]   7.00-8.00   sec   348 MBytes  2.92 Gbits/sec                  
>
> [  5]   8.00-9.00   sec   437 MBytes  3.66 Gbits/sec                  
>
> [  5]   9.00-10.00  sec   441 MBytes  3.70 Gbits/sec                  
>
> [  5]  10.00-10.00  sec   181 KBytes  3.85 Gbits/sec                  
>
> - - - - - - - - - - - - - - - - - - - - - - - - -
>
> [ ID] Interval           Transfer     Bitrate
>
> [  5]   0.00-10.00  sec  4.02 GBytes  3.45 Gbits/sec                  
> receiver
>
> -----------------------------------------------------------
>
> the backup task runs with lz4 compression over TLS
>
> but in average i get this:
>
> Full Backup Job started: 18-Sep-24 15:16 Files=6,075,920 
> Bytes=1,715,453,454,098 *Bytes/sec=113,171,490* Errors=2
>
> this seems not the "best" transfer rate.
>
> I'm trying to find a way to optimize this. Any hints?
>
>
>
>
>

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