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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 | pmgperf - Proxmox Simple Performance Benchmark | |
24 | ============================================== | |
25 | :pmg-toplevel: | |
26 | endif::manvolnum[] | |
27 | ||
28 | The command-line tool `pmgperf` gathers some general | |
29 | performance data. This is mostly useful for debugging and identifying | |
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:: hard disk 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 of the 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 |