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    Improve Clone/Backup/Restore Speed

    Feature Requests
    backups clone
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    • Lonk
      Lonk @jdaviescoates last edited by

      @jdaviescoates I'm using .tgz with Backblaze right now since tgz was the default I didn't look into it. Should I switch to rsync for the benefit of incremental changes or are there cons like @robi is trying to solve (his cloning / restoring speed suggestions).

      Is "Incremental TAR files" the best of both worlds, basically?

      marcusquinn 1 Reply Last reply Reply Quote 0
      • marcusquinn
        marcusquinn @Lonk last edited by

        @Lonk If you use rsync, use Wasabi as it has no ingress costs. Also, in Backblaze, check the lifecycle settings on all buckets to make sure you're not paying to insure infinite versions of versions, just change the setting for each in there to just store the latest.

        Lonk 1 Reply Last reply Reply Quote 0
        • Lonk
          Lonk @marcusquinn last edited by

          @marcusquinn said in Improve Clone/Backup/Restore Speed:

          @Lonk If you use rsync, use Wasabi as it has no ingress costs. Also, in Backblaze, check the lifecycle settings on all buckets to make sure you're not paying to insure infinite versions of versions, just change the setting for each in there to just store the latest.

          I did have infinite versions on, thanks for saving me there, I owe ya!

          marcusquinn 1 Reply Last reply Reply Quote 1
          • marcusquinn
            marcusquinn @Lonk last edited by

            @Lonk Everyone does as the sneaky f***ers make it the default. Must have lost thousands of dollars before I found that where everyone else missed it.

            marcusquinn 1 Reply Last reply Reply Quote 0
            • marcusquinn
              marcusquinn @marcusquinn last edited by

              Wasabi don't make it the default though, and have a much better interface. I'm dropping Backblaze from my recommendations for S3 needs and only use if for personal machine backups which don't have all those extra costs.

              1 Reply Last reply Reply Quote 0
              • yusf
                yusf @robi last edited by

                @robi said in Improve Clone/Backup/Restore Speed:

                This feature is provided by tar via an argument -listed-incremental=snapshot-file where a "snapshot-file" is a special file maintained by the tar command to determine the files that are been added,modified or deleted.

                Have @girish or @nebulon seen this? 😃

                1 Reply Last reply Reply Quote 1
                • jimcavoli
                  jimcavoli App Dev last edited by

                  Recently, I accidentally found myself studying this problem. I've relocated backups to GCS recently from DigitalOcean Spaces for one machine...suffice it to say I found the bottleneck in that process. Previously, it appeared to be some traffic management into spaces, and/or the fact that it was heading to the SFO2 region from NYC3 (you know...because...geography). After turning on backups into GCS in the awesome us multi-region automatic replication (nearline), it became very obvious that the main limiting factor was a 10MB/s cap on the disk speed at DO.

                  Seriously; here's their graph over the last 7 days for Disk I/O performance (it's pretty obvious where the backups are):
                  CleanShot 2020-11-19 at 09.28.45.png

                  The main reason this even showed up is that GCS ingest is way faster from a bandwidth perspective:
                  800b8e2b-95a4-40f5-aa2a-df347d1a2f0d-CleanShot 2020-11-19 at 09.30.00.png

                  Too bad I don't have the old Spaces graph to show as well, but suffice it to say, it wasn't great. So the GCS switchover actually moved the first bottleneck, getting at the main root of the issue.

                  I'll update on how things go one the server in question gets itself moved into a GCP instance - by my rough math, there should be a noticeable performance bump in at least backups, but likely systemwide once it transitions into the GCP volumes, which are rated at least 50% faster in the case of the small volumes, and in the big one (apps data), should have a network performance ceiling that is roughly 6x higher than the existing DO volumes. I know this is more on the production/operator side than the personal side of usage, and the problem of "throw more, bigger resources at it" is not one most folks can/would take on a NAS/local server and home internet connection, but it's some interesting data and an intriguing problem in any case.

                  girish 1 Reply Last reply Reply Quote 5
                  • girish
                    girish Staff @jimcavoli last edited by girish

                    @jimcavoli To add to the disk I/O, for the tar.gz backups I have noticed that gzip performance is quite poor on many of the cloud providers (because of the CPU). Initially, I thought this was just node being very slow (thought that seemed a bit unlikely because it is using zlib underneath like everyone else) but I remember comparing with tar and the performance was quite comparable - https://git.cloudron.io/cloudron/box/-/issues/691#note_10936 . That led me down the path of trying to see if there was a parallel zip implementation that uses multiple cores or some special cpu instructions. I found http://www.zlib.net/pigz/ but haven't really found time to test it.

                    jimcavoli 1 Reply Last reply Reply Quote 1
                    • jimcavoli
                      jimcavoli App Dev @girish last edited by

                      @girish Interesting, and not something I'd considered. That pigs option is similarly interesting, though seems to have gone silent since 2017. Curiously, it's a similar story with pbzip2 (the same idea for bzip2) as far as I can tell. Decent roundup of options for Ubuntu at https://askubuntu.com/questions/258202/multi-core-compression-tools in case you want to review. It will be interesting to see the GCP results for sure. I'll pull some metrics after the migration/restore as well as after the manual backup and see how it does across CPU/Disk/Network in the process.

                      1 Reply Last reply Reply Quote 1
                      • jimcavoli
                        jimcavoli App Dev last edited by

                        Just to follow up, here's a sample of normal backups followed by a Cloudron upgrade, which itself triggered another backup run, and the corresponding relevant network and disk graphs:

                        Network Traffic.png Disk I_O.png

                        All in all, it's definitely fast-er but not insanely performant. CPU utilization vs load hints that it may in fact be down to inefficient utilization of cores to some extent, but there is definitely a fair bit more bottleneck coming from the network still.

                        CPU Utilization.png CPU Load.png

                        Nothing earth-shattering either way, and gains were more mild than I would have guessed, but all in all, not a bad outcome.

                        1 Reply Last reply Reply Quote 4
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