Date: Fri, 20 Jan 2023 19:56:14 -0500 From: Paul Procacci <pprocacci@gmail.com> To: Stavros Filargyropoulos <stav@stav.cc> Cc: freebsd-questions@freebsd.org Subject: Re: Load 0.20 on a freshly installed idle system Message-ID: <CAFbbPujMDQgo=zvSc5orcT=v3ftrVPXDjZE-D%2BUxt3%2BdOjFmUA@mail.gmail.com> In-Reply-To: <CAGAKwcghHH5t1_dtWPkOCwxPvDra%2BmgNFTQsG65i1_7pzTDkug@mail.gmail.com> References: <CAGAKwcjmzz%2B6NMaK2YpjWZPB282RvrKV6zQ%2BSLHsDj3zqXwvGw@mail.gmail.com> <CAFbbPuhX%2BrJFLn8ALVNbCujf1tG3DufVWGSknPkJ%2BKdovFq1xQ@mail.gmail.com> <CAGAKwcgFWukBrB_6SZVAoC4YKyPVhVMGED4aB6Z4E1fwZAO6mg@mail.gmail.com> <CAFbbPuhyJDewvE_a6MQpiGrpUew7EtxZKwt_=RHODNUyCYNduw@mail.gmail.com> <CAGAKwcghHH5t1_dtWPkOCwxPvDra%2BmgNFTQsG65i1_7pzTDkug@mail.gmail.com>
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[-- Attachment #1 --] I'll concede it probably isn't a 5 second window as what I've provided is for OpenBSD, but it's still a measurement of processes in the run queue - that's for sure. I'm being lazy and don't want to look at the source code. That's something you could do. Thanks, Paul Procacci On Fri, Jan 20, 2023 at 7:28 PM Stavros Filargyropoulos <stav@stav.cc> wrote: > Thanks Paul, but If that was the case, then running 5 `top -SH` with a > refresh of 1 second, should increase the load to x4. Which is not what I > see. > > This answer seems a bit vague. Is that the best explanation we have? Do > you mean to say that there is not a single freebsd box out there that has a > load of less than 0.20? > > I'm pretty sure that last time I run FreeBSD that wasn't the case. Also > haven't seen this load in idle system in any other *BSDs. > > Thanks for taking a look anyway. > > On Fri, Jan 20, 2023 at 4:19 PM Paul Procacci <pprocacci@gmail.com> wrote: > >> Stavros, >> >> Load averages by themselves mean very little. >> It's not a figure of cpu usage if that's what you're worried about. >> >> Load averages on BSD are simply processes which have wanted to run at >> least once in the most recent 5-second window, with a degradation over >> time.[1] >> >> Unless you're having a specific problem, I'd guess to say there is no >> problem here at all. >> >> Thanks, >> Paul Procacci >> >> [1] - http://www.undeadly.org/cgi?action=article&sid=20090715034920 >> >> >> On Fri, Jan 20, 2023 at 6:59 PM Stavros Filargyropoulos <stav@stav.cc> >> wrote: >> >>> Thanks Paul. >>> >>> Yeah, I used the `-SH` flags. Don't see anything suspicious. >>> >>> This is is the output of the `systat`: Not sure I understand much from it >>> >>> 2 users Load 0.20 0.15 0.06 Jan 20 15:54:53 >>> Mem usage: 1%Phy 0%Kmem VN PAGER SWAP >>> PAGER >>> Mem: REAL VIRTUAL in out in >>> out >>> Tot Share Tot Share Free count >>> Act 33476K 10672K 513G 12612K 31367M pages >>> All 35920K 12928K 513G 47112K ioflt >>> Interrupts >>> Proc: cow 34 >>> total >>> r p d s w Csw Trp Sys Int Sof Flt zfod >>> uart0 4 >>> 25 118 1 21 5 13 1 ozfod 10 >>> cpu0:timer >>> %ozfod 9 >>> cpu1:timer >>> 0.0%Sys 0.0%Intr 0.0%User 0.0%Nice 100%Idle daefr 6 >>> cpu2:timer >>> | | | | | | | | | | | prcfr 4 >>> cpu3:timer >>> totfr 4 >>> xhci0 128 >>> 229 dtbuf react >>> ahci0 129 >>> Namei Name-cache Dir-cache 619780 maxvn pdwak >>> nvme0:admi >>> Calls hits % hits % 805 numvn 5 pdpgs >>> nvme0:io0 >>> 7 7 100 52 frevn intrn >>> nvme0:io1 >>> 355M wire >>> nvme0:io2 >>> Disks nvd0 ada0 ada1 ada2 ada3 ada4 da0 17M act >>> nvme0:io3 >>> KB/t 16.00 0.00 0.00 0.00 0.00 0.00 0.00 2880K inact >>> igb0:rxq0 >>> tps 0 0 0 0 0 0 0 0 laund >>> igb0:rxq1 >>> MB/s 0.01 0.00 0.00 0.00 0.00 0.00 0.00 31G free 1 >>> igb0:rxq2 >>> %busy 0 0 0 0 0 0 0 142M buf >>> igb0:rxq3 >>> >>> igb0:aq >>> >>> And the output of `top -SH` for reference: >>> >>> last pid: 1508; load averages: 0.25, 0.22, 0.10 >>> >>> up >>> 0+00:08:13 15:57:54 >>> 131 threads: 5 running, 106 sleeping, 20 waiting >>> CPU: 0.1% user, 0.0% nice, 0.0% system, 0.0% interrupt, 99.9% idle >>> Mem: 16M Active, 3032K Inact, 355M Wired, 142M Buf, 31G Free >>> Swap: 3962M Total, 3962M Free >>> >>> PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU >>> COMMAND >>> 11 root 155 ki31 0B 64K RUN 2 8:12 99.99% >>> idle{idle: cpu2} >>> 11 root 155 ki31 0B 64K CPU3 3 8:11 99.98% >>> idle{idle: cpu3} >>> 11 root 155 ki31 0B 64K CPU0 0 8:12 99.97% >>> idle{idle: cpu0} >>> 11 root 155 ki31 0B 64K CPU1 1 8:11 99.96% >>> idle{idle: cpu1} >>> 0 root -76 - 0B 640K - 0 0:00 0.04% >>> kernel{if_config_tqg_0} >>> 1508 stavros 20 0 14M 3812K CPU2 2 0:00 0.02% top >>> 1493 stavros 20 0 15M 5080K select 1 0:00 0.02% tmux >>> 12 root -60 - 0B 320K WAIT 3 0:01 0.01% >>> intr{swi4: clock (0)} >>> 5 root -16 - 0B 16K - 0 0:00 0.01% >>> rand_harvestq >>> 6 root -16 - 0B 48K psleep 0 0:00 0.00% >>> pagedaemon{dom0} >>> 1440 stavros 20 0 21M 9440K select 3 0:00 0.00% sshd >>> 1404 root 20 0 18M 6988K select 2 0:00 0.00% >>> sendmail >>> 15 root -72 - 0B 96K - 3 0:00 0.00% >>> usb{usbus0} >>> 12 root -60 - 0B 320K WAIT 2 0:00 0.00% >>> intr{swi4: clock (2)} >>> 12 root -88 - 0B 320K WAIT 2 0:00 0.00% >>> intr{irq128: xhci0} >>> 8 root 20 - 0B 144K sdflus 3 0:00 0.00% >>> bufdaemon{/ worker} >>> 12 root -60 - 0B 320K WAIT 1 0:00 0.00% >>> intr{swi4: clock (1)} >>> 0 root -76 - 0B 640K - 2 0:00 0.00% >>> kernel{if_io_tqg_2} >>> 8 root -16 - 0B 144K - 1 0:00 0.00% >>> bufdaemon{bufspacedaemon-0} >>> 9 root 16 - 0B 16K syncer 3 0:00 0.00% syncer >>> 12 root -60 - 0B 320K WAIT 3 0:00 0.00% >>> intr{swi4: clock (3)} >>> 8 root -16 - 0B 144K psleep 2 0:00 0.00% >>> bufdaemon{bufdaemon} >>> 8 root -16 - 0B 144K - 0 0:00 0.00% >>> bufdaemon{bufspacedaemon-1} >>> >>> Thanks, >>> Stavros >>> >>> >>> On Fri, Jan 20, 2023 at 2:03 PM Paul Procacci <pprocacci@gmail.com> >>> wrote: >>> >>>> What flags have you included with top? >>>> >>>> By default `top` doesn't show any kernel related processes. `top -SH` >>>> is useful in this respect and others flags may be useful as well. >>>> >>>> systat -vmstat >>>> >>>> ^^ Another command that I like. Also may give you insight. >>>> >>>> Thanks, >>>> Paul Procacci >>>> >>>> On Fri, Jan 20, 2023 at 4:33 PM Stavros Filargyropoulos <stav@stav.cc> >>>> wrote: >>>> >>>>> Hi, >>>>> >>>>> I just installed 13.1 on a system, and the load is at 0.20 at all >>>>> times, although nothing is running and the CPU is 100% free. >>>>> >>>>> `ps aux` and `top` don't show anything of interest either. >>>>> >>>>> For what's worth it, the motherboard is a Supermicro X12STL-IF and the >>>>> CPU a Xeon 2314. >>>>> >>>>> Any ideas/commands that will help me troubleshoot this further? >>>>> >>>>> Thanks, >>>>> Stavros >>>>> >>>> >>>> >>>> -- >>>> __________________ >>>> >>>> :(){ :|:& };: >>>> >>> >> >> -- >> __________________ >> >> :(){ :|:& };: >> > -- __________________ :(){ :|:& };: [-- Attachment #2 --] <div dir="ltr"><div>I'll concede it probably isn't a 5 second window as what I've provided is for OpenBSD, but it's still a measurement of processes in the run queue - that's for sure.<br></div><div>I'm being lazy and don't want to look at the source code. That's something you could do.</div><div><br></div><div>Thanks,</div><div>Paul Procacci<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jan 20, 2023 at 7:28 PM Stavros Filargyropoulos <<a href="mailto:stav@stav.cc">stav@stav.cc</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div></div><div>Thanks Paul, but If that was the case, then running 5 `top -SH` with a refresh of 1 second, should increase the load to x4. Which is not what I see.</div><div><br></div><div>This answer seems a bit vague. Is that the best explanation we have? Do you mean to say that there is not a single freebsd box out there that has a load of less than 0.20?<br></div><div><br></div><div>I'm pretty sure that last time I run FreeBSD that wasn't the case. Also haven't seen this load in idle system in any other *BSDs.<br></div><div><br></div><div>Thanks for taking a look anyway.<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jan 20, 2023 at 4:19 PM Paul Procacci <<a href="mailto:pprocacci@gmail.com" target="_blank">pprocacci@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div><div>Stavros,</div><div><br></div>Load averages by themselves mean very little.<br></div><div>It's not a figure of cpu usage if that's what you're worried about.</div><div><br></div><div>Load averages on BSD are simply processes which have wanted to run at least once in the most recent 5-second window, with a degradation over time.[1]<br><br></div><div>Unless you're having a specific problem, I'd guess to say there is no problem here at all.</div><div><br></div><div>Thanks,</div><div>Paul Procacci</div><div><br></div><div>[1] - <a href="http://www.undeadly.org/cgi?action=article&sid=20090715034920" target="_blank">http://www.undeadly.org/cgi?action=article&sid=20090715034920</a></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jan 20, 2023 at 6:59 PM Stavros Filargyropoulos <<a href="mailto:stav@stav.cc" target="_blank">stav@stav.cc</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Thanks Paul.<br><br>Yeah, I used the `-SH` flags. Don't see anything suspicious.<br><br>This is is the output of the `systat`: Not sure I understand much from it<br><br> 2 users Load 0.20 0.15 0.06 Jan 20 15:54:53<br> Mem usage: 1%Phy 0%Kmem VN PAGER SWAP PAGER<br>Mem: REAL VIRTUAL in out in out<br> Tot Share Tot Share Free count<br>Act 33476K 10672K 513G 12612K 31367M pages<br>All 35920K 12928K 513G 47112K ioflt Interrupts<br>Proc: cow 34 total<br> r p d s w Csw Trp Sys Int Sof Flt zfod uart0 4<br> 25 118 1 21 5 13 1 ozfod 10 cpu0:timer<br> %ozfod 9 cpu1:timer<br> 0.0%Sys 0.0%Intr 0.0%User 0.0%Nice 100%Idle daefr 6 cpu2:timer<br>| | | | | | | | | | | prcfr 4 cpu3:timer<br> totfr 4 xhci0 128<br> 229 dtbuf react ahci0 129<br>Namei Name-cache Dir-cache 619780 maxvn pdwak nvme0:admi<br> Calls hits % hits % 805 numvn 5 pdpgs nvme0:io0<br> 7 7 100 52 frevn intrn nvme0:io1<br> 355M wire nvme0:io2<br>Disks nvd0 ada0 ada1 ada2 ada3 ada4 da0 17M act nvme0:io3<br>KB/t 16.00 0.00 0.00 0.00 0.00 0.00 0.00 2880K inact igb0:rxq0<br>tps 0 0 0 0 0 0 0 0 laund igb0:rxq1<br>MB/s 0.01 0.00 0.00 0.00 0.00 0.00 0.00 31G free 1 igb0:rxq2<br>%busy 0 0 0 0 0 0 0 142M buf igb0:rxq3<br><div> igb0:aq</div><div><br></div><div>And the output of `top -SH` for reference:<br></div><div><br></div><div>last pid: 1508; load averages: 0.25, 0.22, 0.10 up 0+00:08:13 15:57:54<br>131 threads: 5 running, 106 sleeping, 20 waiting<br>CPU: 0.1% user, 0.0% nice, 0.0% system, 0.0% interrupt, 99.9% idle<br>Mem: 16M Active, 3032K Inact, 355M Wired, 142M Buf, 31G Free<br>Swap: 3962M Total, 3962M Free<br><br> PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND<br> 11 root 155 ki31 0B 64K RUN 2 8:12 99.99% idle{idle: cpu2}<br> 11 root 155 ki31 0B 64K CPU3 3 8:11 99.98% idle{idle: cpu3}<br> 11 root 155 ki31 0B 64K CPU0 0 8:12 99.97% idle{idle: cpu0}<br> 11 root 155 ki31 0B 64K CPU1 1 8:11 99.96% idle{idle: cpu1}<br> 0 root -76 - 0B 640K - 0 0:00 0.04% kernel{if_config_tqg_0}<br> 1508 stavros 20 0 14M 3812K CPU2 2 0:00 0.02% top<br> 1493 stavros 20 0 15M 5080K select 1 0:00 0.02% tmux<br> 12 root -60 - 0B 320K WAIT 3 0:01 0.01% intr{swi4: clock (0)}<br> 5 root -16 - 0B 16K - 0 0:00 0.01% rand_harvestq<br> 6 root -16 - 0B 48K psleep 0 0:00 0.00% pagedaemon{dom0}<br> 1440 stavros 20 0 21M 9440K select 3 0:00 0.00% sshd<br> 1404 root 20 0 18M 6988K select 2 0:00 0.00% sendmail<br> 15 root -72 - 0B 96K - 3 0:00 0.00% usb{usbus0}<br> 12 root -60 - 0B 320K WAIT 2 0:00 0.00% intr{swi4: clock (2)}<br> 12 root -88 - 0B 320K WAIT 2 0:00 0.00% intr{irq128: xhci0}<br> 8 root 20 - 0B 144K sdflus 3 0:00 0.00% bufdaemon{/ worker}<br> 12 root -60 - 0B 320K WAIT 1 0:00 0.00% intr{swi4: clock (1)}<br> 0 root -76 - 0B 640K - 2 0:00 0.00% kernel{if_io_tqg_2}<br> 8 root -16 - 0B 144K - 1 0:00 0.00% bufdaemon{bufspacedaemon-0}<br> 9 root 16 - 0B 16K syncer 3 0:00 0.00% syncer<br> 12 root -60 - 0B 320K WAIT 3 0:00 0.00% intr{swi4: clock (3)}<br> 8 root -16 - 0B 144K psleep 2 0:00 0.00% bufdaemon{bufdaemon}<br> 8 root -16 - 0B 144K - 0 0:00 0.00% bufdaemon{bufspacedaemon-1}</div><div><br></div><div>Thanks,</div><div>Stavros<br></div></div><br><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jan 20, 2023 at 2:03 PM Paul Procacci <<a href="mailto:pprocacci@gmail.com" target="_blank">pprocacci@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>What flags have you included with top?</div><div><br></div><div>By default `top` doesn't show any kernel related processes. `top -SH` is useful in this respect and others flags may be useful as well.</div><div><br></div><div>systat -vmstat <br><br></div><div>^^ Another command that I like. Also may give you insight.</div><div><br></div><div>Thanks,</div><div>Paul Procacci<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jan 20, 2023 at 4:33 PM Stavros Filargyropoulos <<a href="mailto:stav@stav.cc" target="_blank">stav@stav.cc</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>Hi,</div><div><br></div><div>I just installed 13.1 on a system, and the load is at 0.20 at all times, although nothing is running and the CPU is 100% free.</div><div><br></div><div>`ps aux` and `top` don't show anything of interest either.</div><div><br></div><div>For what's worth it, the motherboard is a Supermicro X12STL-IF and the CPU a Xeon 2314.</div><div><br></div><div>Any ideas/commands that will help me troubleshoot this further?</div><div><br></div><div>Thanks,</div><div>Stavros<br></div></div> </blockquote></div><br clear="all"><br>-- <br><div dir="ltr">__________________<br><br>:(){ :|:& };:</div> </blockquote></div> </blockquote></div><br clear="all"><br>-- <br><div dir="ltr">__________________<br><br>:(){ :|:& };:</div> </blockquote></div> </blockquote></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail_signature">__________________<br><br>:(){ :|:& };:</div>
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