Hello, Emir,

Thanks for the reply, this is the solr version and heap info, standalone single 
solr server. I don't have monitor tool connected. only look at 'top', has not 
seen cpu spike so far, when the slow response happens, cpu usage is not high at 
all, around 30%.


# curl 'http://.../solr/admin/info/system?wt=json&indent=true'
{
  "responseHeader":{
    "status":0,
    "QTime":27},
  "mode":"std",
  "solr_home":"/ardome/solr",
  "lucene":{
    "solr-spec-version":"6.5.1",
    "solr-impl-version":"6.5.1 cd1f23c63abe03ae650c75ec8ccb37762806cc75 - 
jimczi - 2017-04-21 12:23:42",
    "lucene-spec-version":"6.5.1",
    "lucene-impl-version":"6.5.1 cd1f23c63abe03ae650c75ec8ccb37762806cc75 - 
jimczi - 2017-04-21 12:17:15"},
  "jvm":{
    "version":"1.8.0_144 25.144-b01",
    "name":"Oracle Corporation Java HotSpot(TM) 64-Bit Server VM",
    "spec":{
      "vendor":"Oracle Corporation",
      "name":"Java Platform API Specification",
      "version":"1.8"},
    "jre":{
      "vendor":"Oracle Corporation",
      "version":"1.8.0_144"},
    "vm":{
      "vendor":"Oracle Corporation",
      "name":"Java HotSpot(TM) 64-Bit Server VM",
      "version":"25.144-b01"},
    "processors":32,
    "memory":{
      "free":"69.1 GB",
      "total":"180.2 GB",
      "max":"266.7 GB",
      "used":"111 GB (%41.6)",
      "raw":{
        "free":74238728336,
        "total":193470136320,
        "max":286331502592,
        "used":119231407984,
        "used%":41.64103736566334}},
    "jmx":{
      
"bootclasspath":"/usr/java/jdk1.8.0_144/jre/lib/resources.jar:/usr/java/jdk1.8.0_144/jre/lib/rt.jar:/usr/java/jdk1.8.0_144/jre/lib/sunrsasign.jar:/usr/java/jdk1.8.0_144/jre/lib/jsse.jar:/usr/java/jdk1.8.0_144/jre/lib/jce.jar:/usr/java/jdk1.8.0_144/jre/lib/charsets.jar:/usr/java/jdk1.8.0_144/jre/lib/jfr.jar:/usr/java/jdk1.8.0_144/jre/classes",
      "classpath":"...",
      "commandLineArgs":["-Xms100G",
        "-Xmx300G",
        "-DSTOP.PORT=8079",
        "-DSTOP.KEY=..",
        "-Dsolr.solr.home=..",
        "-Djetty.port=8983"],
      "startTime":"2019-03-18T09:35:27.892Z",
      "upTimeMS":9258422}},
  "system":{
    "name":"Linux",
    "arch":"amd64",
    "availableProcessors":32,
    "systemLoadAverage":14.72,
    "version":"3.0.101-311.g08a8a9d-default",
    "committedVirtualMemorySize":2547960700928,
    "freePhysicalMemorySize":4530696192,
    "freeSwapSpaceSize":3486846976,
    "processCpuLoad":0.3257436126790475,
    "processCpuTime":93869450000000,
    "systemCpuLoad":0.3279781055816521,
    "totalPhysicalMemorySize":406480175104,
    "totalSwapSpaceSize":4302303232,
    "maxFileDescriptorCount":32768,
    "openFileDescriptorCount":385,
    "uname":"Linux ... 3.0.101-311.g08a8a9d-default #1 SMP Wed Dec 14 10:15:37 
UTC 2016 (08a8a9d) x86_64 x86_64 x86_64 GNU/Linux\n",
    "uptime":" 13:09pm  up 5 days 21:23,  7 users,  load average: 14.72, 12.28, 
11.48\n"}}




________________________________
From: Emir Arnautović <emir.arnauto...@sematext.com>
Sent: Monday, March 18, 2019 12:10:30 PM
To: solr-user@lucene.apache.org
Subject: Re: Solr index slow response

Hi Aaron,
Which version of Solr? How did you configure your heap? Is it standalone Solr 
or SolrCloud? A single server? Do you use some monitoring tool? Do you see some 
spikes, pauses or CPU usage is constant?

Thanks,
Emir
--
Monitoring - Log Management - Alerting - Anomaly Detection
Solr & Elasticsearch Consulting Support Training - http://sematext.com/



> On 18 Mar 2019, at 11:47, Aaron Yingcai Sun <y...@vizrt.com> wrote:
>
> Hello, Solr!
>
>
> We are having some performance issue when try to send documents for solr to 
> index. The repose time is very slow and unpredictable some time.
>
>
> Solr server is running on a quit powerful server, 32 cpus, 400GB RAM, while 
> 300 GB is reserved for solr, while this happening, cpu usage is around 30%, 
> mem usage is 34%.  io also look ok according to iotop. SSD disk.
>
>
> Our application send 100 documents to solr per request, json encoded. the 
> size is around 5M each time. some times the response time is under 1 seconds, 
> some times could be 300 seconds, the slow response happens very often.
>
>
> "Soft AutoCommit: disabled", "Hard AutoCommit: if uncommited for 3600000ms; 
> if 1000000 uncommited docs"
>
>
> There are around 100 clients sending those documents at the same time, but 
> each for the client is blocking call which wait the http response then send 
> the next one.
>
>
> I tried to make the number of documents smaller in one request, such as 20, 
> but  still I see slow response time to time, like 80 seconds.
>
>
> Would you help to give some hint how improve the response time?  solr does 
> not seems very loaded, there must be a way to make the response faster.
>
>
> BRs
>
> //Aaron
>
>
>

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