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    Average writes to Disk

    Scheduled Pinned Locked Moved General pfSense Questions
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    • fireodoF
      fireodo @stephenw10
      last edited by

      @stephenw10 said in Average writes to Disk:

      Enabling RAM disks reduces it significantly but you wouldn't want to do that with Snort and pfBlocker running.

      That was my idea too but as you say - no way with snort&pfblockerNG ...

      Kettop Mi4300YL CPU: i5-4300Y @ 1.60GHz RAM: 8GB Ethernet Ports: 4
      SSD: SanDisk pSSD-S2 16GB (ZFS) WiFi: WLE200NX
      pfsense 2.8.0 CE
      Packages: Apcupsd, Cron, Iftop, Iperf, LCDproc, Nmap, pfBlockerNG, RRD_Summary, Shellcmd, Snort, Speedtest, System_Patches.

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      • fireodoF
        fireodo @stephenw10
        last edited by fireodo

        @stephenw10 said in Average writes to Disk:

        ZFS does write to the drive more than UFS by design.

        Do you think that could be from ZFS? Because I have stopped most every service that can be stopped but the writings go on ...

        On the other hand - is my installation so particular?

        Kettop Mi4300YL CPU: i5-4300Y @ 1.60GHz RAM: 8GB Ethernet Ports: 4
        SSD: SanDisk pSSD-S2 16GB (ZFS) WiFi: WLE200NX
        pfsense 2.8.0 CE
        Packages: Apcupsd, Cron, Iftop, Iperf, LCDproc, Nmap, pfBlockerNG, RRD_Summary, Shellcmd, Snort, Speedtest, System_Patches.

        johnpozJ 1 Reply Last reply Reply Quote 0
        • johnpozJ
          johnpoz LAYER 8 Global Moderator @fireodo
          last edited by johnpoz

          @fireodo what ssd are you using? Modern SSD even with 20GB a day you should still be like a 10 year lifespan..

          I just looked up a shit $20 128GB ssd from lexar the ns100, and it lists 60TB write life.. at 20GB a day your still looking at 8 some years..

          Off the cuff 20GB a day does seem like a lot... But even at that you should get decent life out of the SSD..

          An intelligent man is sometimes forced to be drunk to spend time with his fools
          If you get confused: Listen to the Music Play
          Please don't Chat/PM me for help, unless mod related
          SG-4860 24.11 | Lab VMs 2.8, 24.11

          fireodoF 1 Reply Last reply Reply Quote 0
          • fireodoF
            fireodo @johnpoz
            last edited by fireodo

            @johnpoz said in Average writes to Disk:

            what ssd are you using?

            See my signature :-)

            I already ordered some spare for ... just in case ;-)

            Kettop Mi4300YL CPU: i5-4300Y @ 1.60GHz RAM: 8GB Ethernet Ports: 4
            SSD: SanDisk pSSD-S2 16GB (ZFS) WiFi: WLE200NX
            pfsense 2.8.0 CE
            Packages: Apcupsd, Cron, Iftop, Iperf, LCDproc, Nmap, pfBlockerNG, RRD_Summary, Shellcmd, Snort, Speedtest, System_Patches.

            johnpozJ 1 Reply Last reply Reply Quote 0
            • johnpozJ
              johnpoz LAYER 8 Global Moderator @fireodo
              last edited by

              @fireodo I don't see anything listed for 16GB size.. But the 64 is listed as

              36.5TBW (64GB)

              So you have to assume lower than that.. So yeah, prob not the best drives for lots of writes..

              Lets call it half that.. Your looking at like 2.5 years only..

              An intelligent man is sometimes forced to be drunk to spend time with his fools
              If you get confused: Listen to the Music Play
              Please don't Chat/PM me for help, unless mod related
              SG-4860 24.11 | Lab VMs 2.8, 24.11

              fireodoF 2 Replies Last reply Reply Quote 0
              • fireodoF
                fireodo @johnpoz
                last edited by

                @johnpoz said in Average writes to Disk:

                @fireodo I don't see anything listed for 16GB size.. But the 64 is listed as

                36.5TBW (64GB)

                So you have to assume lower than that.. So yeah, prob not the best drives for lots of writes..

                Lets call it half that.. Your looking at like 2.5 years only..

                Of course this all sounds reasonable but for me its strange that a older APU (that I have as quick replacement in case of hardware failure - i do much HomeOffice) with 2.4.5 shows insignificant writes to disk (also ZFS) far far away from 20GB/day.

                Kettop Mi4300YL CPU: i5-4300Y @ 1.60GHz RAM: 8GB Ethernet Ports: 4
                SSD: SanDisk pSSD-S2 16GB (ZFS) WiFi: WLE200NX
                pfsense 2.8.0 CE
                Packages: Apcupsd, Cron, Iftop, Iperf, LCDproc, Nmap, pfBlockerNG, RRD_Summary, Shellcmd, Snort, Speedtest, System_Patches.

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                • AndyRHA
                  AndyRH
                  last edited by

                  Extra space will get longer life, more room for TRIM to work with and at todays prices it is worth the investment IMHO.

                  o||||o
                  7100-1u

                  fireodoF 1 Reply Last reply Reply Quote 0
                  • fireodoF
                    fireodo @AndyRH
                    last edited by

                    @andyrh said in Average writes to Disk:

                    Extra space will get longer life, more room for TRIM to work with and at todays prices it is worth the investment IMHO.

                    I understand that all very well - its the Researcher in me that wants to find out what the real cause of all that is! Eliminating the symptoms dont eliminate the ill (if it is one) ;-)

                    Kettop Mi4300YL CPU: i5-4300Y @ 1.60GHz RAM: 8GB Ethernet Ports: 4
                    SSD: SanDisk pSSD-S2 16GB (ZFS) WiFi: WLE200NX
                    pfsense 2.8.0 CE
                    Packages: Apcupsd, Cron, Iftop, Iperf, LCDproc, Nmap, pfBlockerNG, RRD_Summary, Shellcmd, Snort, Speedtest, System_Patches.

                    1 Reply Last reply Reply Quote 0
                    • AndyRHA
                      AndyRH
                      last edited by

                      @fireodo said in Average writes to Disk:

                      its the Researcher in me that wants to find out what the real cause of all that is!

                      Agreed.
                      Not everyone does that. I like to know how it works too.

                      o||||o
                      7100-1u

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                      • fireodoF
                        fireodo @johnpoz
                        last edited by

                        @johnpoz Is this process telling you (or somebody else) something?

                        zpool-zroot{txg_thread_enter}

                        This process is doing very much writing when I use
                        top -SH -o write (and after that "m")

                        Kettop Mi4300YL CPU: i5-4300Y @ 1.60GHz RAM: 8GB Ethernet Ports: 4
                        SSD: SanDisk pSSD-S2 16GB (ZFS) WiFi: WLE200NX
                        pfsense 2.8.0 CE
                        Packages: Apcupsd, Cron, Iftop, Iperf, LCDproc, Nmap, pfBlockerNG, RRD_Summary, Shellcmd, Snort, Speedtest, System_Patches.

                        johnpozJ 1 Reply Last reply Reply Quote 0
                        • johnpozJ
                          johnpoz LAYER 8 Global Moderator @fireodo
                          last edited by johnpoz

                          I see that pop up every few seconds on mine as well

                          zpool.png

                          But I have no idea what it is or does to be honest..

                          Maybe a zfs guru will chime in - that sure isn't me ;)

                          An intelligent man is sometimes forced to be drunk to spend time with his fools
                          If you get confused: Listen to the Music Play
                          Please don't Chat/PM me for help, unless mod related
                          SG-4860 24.11 | Lab VMs 2.8, 24.11

                          fireodoF 1 Reply Last reply Reply Quote 0
                          • fireodoF
                            fireodo @johnpoz
                            last edited by

                            @johnpoz said in Average writes to Disk:

                            But I have no idea what it is or does to be honest..

                            I googled about it but I did not find anything concludent - that's why I was asking.

                            Would you show me your output of iostat -d 5 6 ?

                            Kettop Mi4300YL CPU: i5-4300Y @ 1.60GHz RAM: 8GB Ethernet Ports: 4
                            SSD: SanDisk pSSD-S2 16GB (ZFS) WiFi: WLE200NX
                            pfsense 2.8.0 CE
                            Packages: Apcupsd, Cron, Iftop, Iperf, LCDproc, Nmap, pfBlockerNG, RRD_Summary, Shellcmd, Snort, Speedtest, System_Patches.

                            johnpozJ 1 Reply Last reply Reply Quote 0
                            • johnpozJ
                              johnpoz LAYER 8 Global Moderator @fireodo
                              last edited by

                              here you go - but I don't have a ssd, this is on a netgate sg4860

                              output.png

                              An intelligent man is sometimes forced to be drunk to spend time with his fools
                              If you get confused: Listen to the Music Play
                              Please don't Chat/PM me for help, unless mod related
                              SG-4860 24.11 | Lab VMs 2.8, 24.11

                              fireodoF 1 Reply Last reply Reply Quote 0
                              • fireodoF
                                fireodo @johnpoz
                                last edited by

                                @johnpoz said in Average writes to Disk:

                                here you go - but I don't have a ssd, this is on a netgate sg4860

                                Thanks a lot - your values are similar to mine! You have also ZFS?

                                Kettop Mi4300YL CPU: i5-4300Y @ 1.60GHz RAM: 8GB Ethernet Ports: 4
                                SSD: SanDisk pSSD-S2 16GB (ZFS) WiFi: WLE200NX
                                pfsense 2.8.0 CE
                                Packages: Apcupsd, Cron, Iftop, Iperf, LCDproc, Nmap, pfBlockerNG, RRD_Summary, Shellcmd, Snort, Speedtest, System_Patches.

                                johnpozJ 1 Reply Last reply Reply Quote 0
                                • johnpozJ
                                  johnpoz LAYER 8 Global Moderator @fireodo
                                  last edited by

                                  Yeah zfs.. Like I said I agree that 20GB a day seems like a lot - if your doing your math right, etc. But even at that your typical ssd should have a long life anyway..

                                  My desktop model sg4860 has eMMC not ssd.. Which also have limited life writes..

                                  An intelligent man is sometimes forced to be drunk to spend time with his fools
                                  If you get confused: Listen to the Music Play
                                  Please don't Chat/PM me for help, unless mod related
                                  SG-4860 24.11 | Lab VMs 2.8, 24.11

                                  fireodoF 1 Reply Last reply Reply Quote 0
                                  • fireodoF
                                    fireodo @johnpoz
                                    last edited by

                                    @johnpoz said in Average writes to Disk:

                                    My desktop model sg4860 has eMMC not ssd.. Which also have limited life writes..

                                    Is that eMMC replaceable?

                                    Kettop Mi4300YL CPU: i5-4300Y @ 1.60GHz RAM: 8GB Ethernet Ports: 4
                                    SSD: SanDisk pSSD-S2 16GB (ZFS) WiFi: WLE200NX
                                    pfsense 2.8.0 CE
                                    Packages: Apcupsd, Cron, Iftop, Iperf, LCDproc, Nmap, pfBlockerNG, RRD_Summary, Shellcmd, Snort, Speedtest, System_Patches.

                                    johnpozJ 1 Reply Last reply Reply Quote 0
                                    • johnpozJ
                                      johnpoz LAYER 8 Global Moderator @fireodo
                                      last edited by johnpoz

                                      I don't think so - not easy... But I think there is something missing here on what is actually being written.

                                      So from my understanding zpool iostat shows total since boot..

                                      [21.05.1-RELEASE][admin@sg4860.local.lan]/: zpool iostat
                                                     capacity     operations    bandwidth
                                      pool        alloc   free   read  write   read  write
                                      ----------  -----  -----  -----  -----  -----  -----
                                      zroot        969M  25.1G      0     10    645   227K
                                      [21.05.1-RELEASE][admin@sg4860.local.lan]/: 
                                      

                                      My box has been up for days.. Since I updated it to 21.05.1

                                      Uptime 6 Days 02 Hours 12 Minutes 47 Seconds

                                      edit: Well that can not be since boot... Not exactly sure what that reads to be honest.. But if you have it report every 2 seconds.

                                      [21.05.1-RELEASE][admin@sg4860.local.lan]/: zpool iostat zroot 2
                                                     capacity     operations    bandwidth
                                      pool        alloc   free   read  write   read  write
                                      ----------  -----  -----  -----  -----  -----  -----
                                      zroot        970M  25.1G      0     10    645   227K
                                      zroot        970M  25.1G      0      0      0      0
                                      zroot        968M  25.1G      0     34      0   552K
                                      zroot        968M  25.1G      0      0      0      0
                                      zroot        967M  25.1G      0     35      0   624K
                                      zroot        967M  25.1G      0      0      0      0
                                      zroot        967M  25.1G      0      0      0      0
                                      zroot        967M  25.1G      0     38      0   532K
                                      zroot        967M  25.1G      0      0      0      0
                                      zroot        967M  25.1G      0     33      0   602K
                                      zroot        967M  25.1G      0      0      0      0
                                      zroot        967M  25.1G      0      0      0      0
                                      zroot        967M  25.1G      0     34      0   520K
                                      zroot        967M  25.1G      0      0      0      0
                                      zroot        967M  25.1G      0     33      0   618K
                                      zroot        967M  25.1G      0      0      0      0
                                      zroot        967M  25.1G      0      0      0      0
                                      zroot        967M  25.1G      0     33      0   531K
                                      zroot        967M  25.1G      0      0      0      0
                                      zroot        967M  25.1G      0     33      0   621K
                                      zroot        967M  25.1G      0      0      0      0
                                      zroot        967M  25.1G      0      7      0   114K
                                      zroot        967M  25.1G      0     24      0   415K
                                      zroot        967M  25.1G      0      0      0      0
                                      

                                      An intelligent man is sometimes forced to be drunk to spend time with his fools
                                      If you get confused: Listen to the Music Play
                                      Please don't Chat/PM me for help, unless mod related
                                      SG-4860 24.11 | Lab VMs 2.8, 24.11

                                      fireodoF 1 Reply Last reply Reply Quote 0
                                      • fireodoF
                                        fireodo @johnpoz
                                        last edited by

                                        @johnpoz Here is my output - I'm also no ZFS expert!
                                        As far as I see not much different ...
                                        zpool iostat
                                        capacity operations bandwidth
                                        pool alloc free read write read write


                                        zroot 808M 11.7G 0 12 319 214K

                                        zpool iostat zroot 2
                                        capacity operations bandwidth
                                        pool alloc free read write read write


                                        zroot 807M 11.7G 0 12 319 214K
                                        zroot 808M 11.7G 0 35 0 623K
                                        zroot 808M 11.7G 0 30 0 432K
                                        zroot 808M 11.7G 0 1 0 8.00K
                                        zroot 808M 11.7G 0 0 0 0
                                        zroot 807M 11.7G 0 36 0 535K
                                        zroot 807M 11.7G 0 0 0 0
                                        zroot 807M 11.7G 0 32 0 442K
                                        zroot 807M 11.7G 0 0 0 0
                                        zroot 807M 11.7G 0 2 0 28.0K
                                        zroot 807M 11.7G 0 35 0 618K
                                        zroot 807M 11.7G 0 0 0 0
                                        zroot 807M 11.7G 0 32 0 420K
                                        zroot 807M 11.7G 0 3 0 22.0K
                                        zroot 807M 11.7G 0 0 0 0
                                        zroot 807M 11.7G 0 35 0 486K
                                        zroot 807M 11.7G 0 0 0 0
                                        zroot 807M 11.7G 0 32 0 442K
                                        zroot 807M 11.7G 0 0 0 7.99K
                                        zroot 807M 11.7G 0 0 0 5.98K
                                        zroot 807M 11.7G 0 32 0 442K
                                        zroot 807M 11.7G 0 0 0 0
                                        zroot 806M 11.7G 0 1 0 14.0K
                                        zroot 806M 11.7G 0 2 0 28.0K
                                        zroot 806M 11.7G 0 1 0 14.0K
                                        zroot 807M 11.7G 0 33 0 442K
                                        zroot 807M 11.7G 0 0 0 0
                                        zroot 807M 11.7G 0 31 0 428K
                                        zroot 807M 11.7G 0 0 0 0
                                        zroot 807M 11.7G 0 0 0 0
                                        zroot 807M 11.7G 0 10 0 623K
                                        zroot 808M 11.7G 0 33 0 547K
                                        zroot 808M 11.7G 0 35 0 498K
                                        zroot 808M 11.7G 0 1 0 14.0K

                                        Kettop Mi4300YL CPU: i5-4300Y @ 1.60GHz RAM: 8GB Ethernet Ports: 4
                                        SSD: SanDisk pSSD-S2 16GB (ZFS) WiFi: WLE200NX
                                        pfsense 2.8.0 CE
                                        Packages: Apcupsd, Cron, Iftop, Iperf, LCDproc, Nmap, pfBlockerNG, RRD_Summary, Shellcmd, Snort, Speedtest, System_Patches.

                                        M 1 Reply Last reply Reply Quote 0
                                        • M
                                          mcury Rebel Alliance @fireodo
                                          last edited by

                                          SG-3100 - 21.05.1 - pfblockerng dnsbl python mode enabled

                                          iostat -d 5 6
                                          6dd05033-bf0e-488b-816b-548dcdec0275-image.png

                                          dead on arrival, nowhere to be found.

                                          fireodoF keyserK 2 Replies Last reply Reply Quote 0
                                          • fireodoF
                                            fireodo @mcury
                                            last edited by

                                            @mcury I guess FS is UFS and not ZFS ...

                                            Kettop Mi4300YL CPU: i5-4300Y @ 1.60GHz RAM: 8GB Ethernet Ports: 4
                                            SSD: SanDisk pSSD-S2 16GB (ZFS) WiFi: WLE200NX
                                            pfsense 2.8.0 CE
                                            Packages: Apcupsd, Cron, Iftop, Iperf, LCDproc, Nmap, pfBlockerNG, RRD_Summary, Shellcmd, Snort, Speedtest, System_Patches.

                                            M 1 Reply Last reply Reply Quote 0
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