pmgperf.adoc

   1 [[chapter_pmgperf]]
   2 ifdef::manvolnum[]
   3 pmgperf(1)
   4 ==========
   5 :pmg-toplevel:
   6
   7 NAME
   8 ----
   9
  10 pmgperf - Proxmox Simple Performance Benchmark
  11
  12
  13 SYNOPSIS
  14 --------
  15
  16 include::pmgperf.1-synopsis.adoc[]
  17
  18
  19 DESCRIPTION
  20 -----------
  21 endif::manvolnum[]
  22 ifndef::manvolnum[]
  23 Proxmox Simple Performance Benchmark
  24 ====================================
  25 :pmg-toplevel:
  26 endif::manvolnum[]
  27
  28 The command line tool `pmgperf` tries to gather some general
  29 performance data. This is mostly useful for debugging and to identify
  30 performance bottlenecks. It computes the following metrics:
  31
  32 [horizontal]
  33 CPU BOGOMIPS:: bogomips sum of all CPUs
  34
  35 REGEX/SECOND:: regular expressions per second (perl performance
  36   test), should be above 1000000.
  37
  38 HD SIZE:: harddisk size
  39
  40 BUFFERED READS:: simple HD read test. Modern HDs should reach at
  41 least 100 MB/sec
  42
  43 AVERAGE SEEK TIME:: tests average seek time. Fast SCSI HDs reach
  44 values < 8 milliseconds. Common IDE/SATA disks get values from 15 to
  45 20 ms. SSD seek times should be below 1ms.
  46
  47 FSYNCS/SECOND:: value should be greater than 200 (you should enable
  48 'write back' cache mode on you RAID controller - needs a battery
  49 backed cache (BBWC)).
  50
  51 DNS EXT:: average time to resolve an external DNS name
  52
  53 DNS INT:: average time to resolve a local DNS name
  54
  55 Here is an example output generated by the tool:
  56
  57 ----
  58 # pmgperf
  59 CPU BOGOMIPS:      16759.60
  60 REGEX/SECOND:      1186304
  61 HD SIZE:           60.78 GB (/dev/sda1)
  62 BUFFERED READS:    209.84 MB/sec
  63 AVERAGE SEEK TIME: 1.24 ms
  64 FSYNCS/SECOND:     2198.79
  65 DNS EXT:           35.69 ms
  66 DNS INT:           1.41 ms (yourdomain.tld)
  67 ----
  68
  69 ifdef::manvolnum[]
  70 include::pmg-copyright.adoc[]
  71 endif::manvolnum[]
  72