There looks to be a performance regression in cbbackupmgr, the issue was spotted later because there has been issue with the backup performance cluster leto (CBPS-769)
We know a few months back 6.6 was perform better and was using less resouces. Espically CPU.
Now we notice on older hardware 6.6. performances worst than 6.5.0, but on better hardware it performances better that 6.5.0.
The following results were seens backing up a 100GB bucket from 6.5.0:
CBM 6.5.0: 4m23.556859363s
CBM 6.6.0: 5m34.174214886s
Also the CPU usage has increeased.
In the time period without automated performance testing there has been a number of changes, that could have caused this.
For cbbackupmgr 6.6 to preforman equally or better than cbbackupmgr 6.5.
- relates to
GOCBC-958 gocbcore v9 buffer acknowledgement packets are sent to frequently
|For Gerrit Dashboard: MB-40525|
|132832,1||MB-40525 Close all vBuckets at the end of the backup||mad-hatter||backup||Status: ABANDONED||+2||+1|
|132833,1||MB-40525 Periodically sync the Rift data store to disk||mad-hatter||backup||Status: ABANDONED||+2||+1|
|132834,1||MB-40525 Change Rift index synchronous mode to 'normal'||mad-hatter||backup||Status: ABANDONED||+2||+1|
|133052,2||MB-40525 Update gocbcore to v9.0.4||master||manifest||Status: MERGED||+2||+1|