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tulo

CPU usage rippled

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13 hours ago, tulo said:

What I see in the logs is A LOT of "LoadMonitor:WRN Job"

Also with a very long time such as:


2020-May-03 17:02:03.925339628 UTC LoadMonitor:WRN Job: processLedgerData run: 0ms wait: 337895ms

I mean...337 seconds to process the Ledger data?? :mellow:

It took 0ms for the job to run. It took the server 337.895 seconds, or over 5 minutes, to actually complete higher-priority jobs and/or earlier ledger data to get to it and execute it.

Somethings is definitely weird here. The [node_size] being small probably doesn't help—I'd recommend medium by the way—but I doubt that's the issue. Sukrim may be right about the disk. Can you please execute the following command while rippled is running?

iostat -t -d -x 10 > iostat.out 2>&1

It will collect disk I/O information every 10 seconds until stopped. Please allow this to run for about 5 minutes then press CTRL-C. You can then attach the file iostat.out here. Please review the information contained within before you do so (you can use any text editor to view the contents), to ensure that it contains no information that you feel uncomfortable with. It should not; just I/O metrics on the disks on your machine, but better safe than sorry!

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Posted (edited)
Linux 4.15.0-91-generic (XXX) 	15/05/2020 	_x86_64_	(4 CPU)

15/05/2020 XX:18:39
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     3,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,79    19,65   12,00 1276,11    70,07 12109,99    18,91     0,05    0,05    0,44    0,05   0,09  11,66

15/05/2020 XX:18:49
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    33,30    0,00  387,10     0,00  2707,20    13,99     1,50    3,88    0,00    3,88   0,12   4,56

15/05/2020 XX:18:59
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    17,70    0,70  684,70    11,20  4738,00    13,86     2,13    3,11    1,14    3,11   0,10   6,56

15/05/2020 XX:19:09
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    20,50    0,40  703,70     1,60  9922,40    28,19     2,27    3,23    0,00    3,23   0,14  10,20

15/05/2020 XX:19:19
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    12,50    0,00  195,00     0,00  1391,20    14,27     0,44    2,28    0,00    2,28   0,15   2,88

15/05/2020 XX:19:29
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    17,20    0,00  679,50     0,00  4733,20    13,93     1,90    2,81    0,00    2,81   0,10   6,48

15/05/2020 XX:19:39
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,20    22,38    2,50  212,69    51,15  1442,96    13,89     0,81    3,78    0,32    3,83   0,19   4,08

15/05/2020 XX:19:49
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,30    18,20    3,50  660,60    15,20  4676,00    14,13     1,93    2,91    0,23    2,93   0,10   6,92

15/05/2020 XX:19:59
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    30,10   76,10  294,90  2578,00  2166,40    25,58     1,19    3,21    0,50    3,91   0,14   5,28

15/05/2020 XX:20:09
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    17,50    0,00  614,10     0,00  4241,20    13,81     2,26    3,69    0,00    3,69   0,11   6,64

15/05/2020 XX:20:19
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    31,80    0,00  272,70     0,00  1834,40    13,45     0,83    3,06    0,00    3,06   0,13   3,68

15/05/2020 XX:20:29
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    17,10    0,10  474,20     0,40  3514,40    14,82     1,25    2,66    4,00    2,66   0,12   5,84

15/05/2020 XX:20:39
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    12,80    0,00  210,00     0,00  1392,80    13,26     0,57    2,71    0,00    2,71   0,16   3,40

15/05/2020 XX:20:49
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    13,00    0,00  389,10     0,00  2717,60    13,97     1,28    3,29    0,00    3,29   0,11   4,32

15/05/2020 XX:20:59
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               5,50     9,30   10,80  416,90    85,20  3030,80    14,57     0,64    1,51    0,41    1,54   0,10   4,36

15/05/2020 XX:21:09
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    22,40  183,70 1548,70  1412,80 12025,20    15,51     5,22    3,02    0,19    3,36   0,09  14,84

15/05/2020 XX:21:19
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    22,30    0,30 2696,70     1,20 21739,20    16,12     8,05    3,00    0,00    3,00   0,07  20,08

15/05/2020 XX:21:29
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    24,30    0,00 4097,20     0,00 30058,00    14,67     9,87    2,42    0,00    2,42   0,07  28,04

15/05/2020 XX:21:39
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    22,80    0,00 4552,80     0,00 34366,40    15,10    13,44    2,97    0,00    2,97   0,06  28,28

15/05/2020 XX:21:49
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    23,30    0,00 2151,30     0,00 15777,20    14,67     4,88    2,29    0,00    2,29   0,08  16,24

15/05/2020 XX:21:59
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    22,70    0,00 4260,70     0,00 32510,80    15,26    10,60    2,49    0,00    2,49   0,07  29,04

15/05/2020 XX:22:09
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    21,90    0,00 4457,80     0,00 34346,40    15,41    14,72    3,31    0,00    3,31   0,06  27,80

15/05/2020 XX:22:19
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    24,50    0,00 4137,00     0,00 28729,20    13,89    12,46    3,02    0,00    3,02   0,06  26,20

15/05/2020 XX:22:29
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    20,80    0,00 2637,20     0,00 21236,00    16,10     7,90    3,01    0,00    3,01   0,07  18,76

15/05/2020 XX:22:39
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    24,30    0,10 3994,90     0,40 29432,80    14,74    12,01    3,02    0,00    3,02   0,07  27,40

15/05/2020 XX:22:49
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    22,90    0,00 4247,60     0,00 31560,80    14,86    11,19    2,65    0,00    2,65   0,06  27,28

15/05/2020 XX:22:59
Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
loop0             0,00     0,00    0,00    0,00     0,00     0,00     0,00     0,00    0,00    0,00    0,00   0,00   0,00
sda               0,00    25,10    0,00 3000,00     0,00 21406,00    14,27     7,91    2,65    0,00    2,65   0,07  21,72

Is node_size small reducing RAM usage and increasing hard disk usage?
BTW unrelated,  @nikb did the team improved the overall RAM usage in 1.4.0 or 1.5.0? Because to me it went down from around 11GB (rippled 1.3.1) to 5.5GB (1.5.0).

Edited by tulo

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18 hours ago, nikb said:

I'd definitely have you doing online delete a lot less; say once every 10k ledgers?

I'm trying. I'm not seeing any difference in CPU usage till now.

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Posted (edited)
On 4/3/2020 at 5:23 AM, tulo said:

Is it normal that an intel i7, 6th gen, 3.5Ghz is always between 110% and 350% usage only for rippled (not validating)?

And there are around 30-50 transactions per ledger. What the hell is the CPU doing with 30 transactions every 4 seconds?

Do you have similar numbers?

After updating to 1.5.0, the xrpchat validator was struggling to keep up. Upgrading from 16GB TO 32GB RAM appears to fix that bottleneck. If I had to guess, the extra RAM was needed because the CPU was getting overloaded, which seems new.

You mentioned you are not validating, so it’s weird that the new rippled needs so much processing power. But I watched the CPU % a fair bit over the last few weeks, and it definitely goes over 100% (A LOT). Bearing in mind the validator is only 4 core XEON. Even so there’s no reason for that happen.

Edited by karlos

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That's curious. I don't see such CPU spikes on my own machines and CPU and memory seems roughly in line with what I would expect. Spiking the CPU on occasion is not unreasonable; the question is what the server is doing during those spikes. Can you produce the output of the following two commands:

  1. rippled server_info counters
  2. rippled get_counts

Out of an abundance of caution, please be sure to mask out or remove the pubkey_nodepubkey_validator and hostid fields from the server_info counters response.

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Posted (edited)
On 5/24/2020 at 9:39 PM, karlos said:

After updating to 1.5.0, the xrpchat validator was struggling to keep up. Upgrading from 16GB TO 32GB RAM appears to fix that bottleneck. If I had to guess, the extra RAM was needed because the CPU was getting overloaded, which seems new.

You mentioned you are not validating, so it’s weird that the new rippled needs so much processing power. But I watched the CPU % a fair bit over the last few weeks, and it definitely goes over 100% (A LOT). Bearing in mind the validator is only 4 core XEON. Even so there’s no reason for that happen.

I doubt the problem is fixed. Sounds like you've just masked the problem by adding more hardware. But there's nothing that can't be fixed without throwing more money at it.

Edited by Scout

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On 5/26/2020 at 8:05 AM, nikb said:

That's curious. I don't see such CPU spikes on my own machines and CPU and memory seems roughly in line with what I would expect. Spiking the CPU on occasion is not unreasonable; the question is what the server is doing during those spikes. Can you produce the output of the following two commands:

  1. rippled server_info counters
  2. rippled get_counts

Out of an abundance of caution, please be sure to mask out or remove the pubkey_nodepubkey_validator and hostid fields from the server_info counters response.

{
   "result" : {
      "info" : {
         "build_version" : "1.5.0",
         "complete_ledgers" : "55824648-55841275",
         "counters" : {
            "job_queue" : {
               "acceptLedger" : {
                  "finished" : "356147",
                  "queued" : "356148",
                  "queued_duration_us" : "159273219",
                  "running_duration_us" : "296527060321",
                  "started" : "356148"
               },
               "advanceLedger" : {
                  "finished" : "11314812",
                  "queued" : "11314812",
                  "queued_duration_us" : "182195571274",
                  "running_duration_us" : "348976246977",
                  "started" : "11314812"
               },
               "batch" : {
                  "finished" : "9804895",
                  "queued" : "9804895",
                  "queued_duration_us" : "3287620154",
                  "running_duration_us" : "91395449129",
                  "started" : "9804895"
               },
               "clientCommand" : {
                  "finished" : "14992132",
                  "queued" : "14992133",
                  "queued_duration_us" : "33226073085",
                  "running_duration_us" : "35116397751",
                  "started" : "14992133"
               },
               "clusterReport" : {
                  "finished" : "137627",
                  "queued" : "137627",
                  "queued_duration_us" : "1813165331",
                  "running_duration_us" : "27914698",
                  "started" : "137627"
               },
               "fetchTxnData" : {
                  "finished" : "8741674",
                  "queued" : "8741674",
                  "queued_duration_us" : "73175644535",
                  "running_duration_us" : "22351679446",
                  "started" : "8741674"
               },
               "heartbeat" : {
                  "finished" : "1341991",
                  "queued" : "1341991",
                  "queued_duration_us" : "16004141504",
                  "running_duration_us" : "19748931430",
                  "started" : "1341991"
               },
               "ledgerData" : {
                  "finished" : "4307794",
                  "queued" : "4307794",
                  "queued_duration_us" : "339810477342",
                  "running_duration_us" : "343062420142",
                  "started" : "4307794"
               },
               "ledgerRequest" : {
                  "finished" : "1112554",
                  "queued" : "1112554",
                  "queued_duration_us" : "81124330674",
                  "running_duration_us" : "947858889",
                  "started" : "1112554"
               },
               "makeFetchPack" : {
                  "finished" : "100",
                  "queued" : "100",
                  "queued_duration_us" : "4934458",
                  "running_duration_us" : "17981004",
                  "started" : "100"
               },
               "publishAcqLedger" : {
                  "finished" : "194",
                  "queued" : "194",
                  "queued_duration_us" : "3165420",
                  "running_duration_us" : "29414800",
                  "started" : "194"
               },
               "sweep" : {
                  "finished" : "43469",
                  "queued" : "43469",
                  "queued_duration_us" : "770089738",
                  "running_duration_us" : "73298779238",
                  "started" : "43469"
               },
               "total" : {
                  "finished" : "152248245",
                  "queued" : "152248247",
                  "queued_duration_us" : "6184420058189",
                  "running_duration_us" : "1559682365459",
                  "started" : "152248247"
               },
               "transaction" : {
                  "finished" : "14102849",
                  "queued" : "14102849",
                  "queued_duration_us" : "418213100092",
                  "running_duration_us" : "35362294456",
                  "started" : "14102849"
               },
               "trustedProposal" : {
                  "finished" : "21846117",
                  "queued" : "21846117",
                  "queued_duration_us" : "1053391896000",
                  "running_duration_us" : "58153733423",
                  "started" : "21846117"
               },
               "trustedValidation" : {
                  "finished" : "12825976",
                  "queued" : "12825976",
                  "queued_duration_us" : "1082303194100",
                  "running_duration_us" : "99018568696",
                  "started" : "12825976"
               },
               "untrustedProposal" : {
                  "finished" : "50710180",
                  "queued" : "50710180",
                  "queued_duration_us" : "2886637034070",
                  "running_duration_us" : "124778547357",
                  "started" : "50710180"
               },
               "untrustedValidation" : {
                  "finished" : "182571",
                  "queued" : "182571",
                  "queued_duration_us" : "11715484674",
                  "running_duration_us" : "404974562",
                  "started" : "182571"
               },
               "updatePaths" : {
                  "finished" : "355981",
                  "queued" : "355981",
                  "queued_duration_us" : "141979839",
                  "running_duration_us" : "442760618",
                  "started" : "355981"
               },
               "writeAhead" : {
                  "finished" : "71182",
                  "queued" : "71182",
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}

 

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Sometimes if the disk is old, it will slow down the cpu, I have no idea why but it will slow it down. Try to put in an ssd, not the cheapest one but a decent ssd.

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On 7/31/2020 at 10:18 AM, JakekeKe9 said:

Sometimes if the disk is old, it will slow down the cpu, I have no idea why but it will slow it down. Try to put in an ssd, not the cheapest one but a decent ssd.

It's a relatively new SSD.

Another thing I noticed is that the more rippled runs, the less responsive it is. Sort of leakeage of performances over time. Then resetting it solves the issue (not the CPU issue).

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