VPS : Basic checks for performance of a VPS and or a Server
There is more than one way to check the performance available on a VPS Server but I go for a 1st quick shot to test if something is falling over.
All I one Script:
The Guys @ freevps.us offer a script that does it all or you.
Host info , Download Speed Test , and disk IO.
Give it a try, it does help you quick and dirty to get some results.
wget freevps.us/downloads/bench.sh -O - -o /dev/null | bash
VPS Upload and Download Speed:
Quick check to see your up and downstream speed for the VPS.
wget https://raw.githubusercontent.com/sivel/speedtest-cli/master/speedtest_cli.py speedtest_cli.py --share
IO (also covered by the all in one script):
To get a brief feeling about IO capabilities of a VPS you could use
dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync;rm test
16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 9.91105 s, 108 MB/s
Some commonly accepted averages for random IO operations, calculated as 1/(seek + latency) = IOPS: (Source wikipedia https://en.wikipedia.org/wiki/IOPS)
| Device | Type | IOPS | Interface |
| 7,200 rpm SATA drives | HDD | ~75-100 IOPS[2] | SATA 3 Gbit/s |
| 10,000 rpm SATA drives | HDD | ~125-150 IOPS[2] | SATA 3 Gbit/s |
| 10,000 rpm SAS drives | HDD | ~140 IOPS[2] | SAS |
| 15,000 rpm SAS drives | HDD | ~175-210 IOPS[2] | SAS |
| Various (See Wikipedia page for details) |
SSD | ~ > 5000 IOPS | SATA 3 / 6 Gbit/s |
More to read about disk performance here http://wintelguy.com/2013/20130406_disk_perf.html
Further details about your CPU:
cat /proc/cpuinfo
processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 45 model name : Intel(R) Xeon(R) CPU E5-2650 0 @ 2.00GHz stepping : 7 microcode : 0x710 cpu MHz : 1995.192 cache size : 20480 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss ht syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts nopl xtopology tsc_reliable nonstop_tsc aperfmperf pni pclmulqdq ssse3 cx16 pcid sse4_1 sse4_2 x2apic popcnt aes xsave avx hypervisor lahf_lm ida arat epb xsaveopt pln pts dtherm bogomips : 3990.38 clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management:
SAR / Sysstat
To be able to periodically check the performance even retrospectively, you may want to install sysstat which contains sar.
Sar can give you detail about
- Collective CPU usage
- Individual CPU statistics
- Memory used and available
- Swap space used and available
- Overall I/O activities of the system
- Individual device I/O activities
- Context switch statistics
- Run queue and load average data
- Network statistics
- Report sar data from a specific time
In CentOS / Redhat you can do so by using
Sudo yum install sysstat
In Debian / Ubuntu you use
sudo apt-get install sysstat
Check that it put in the periodic checks in the crontab
vi /etc/cron.d/sysstat # Check there is PATH=/usr/lib/sysstat:/usr/sbin:/usr/sbin:/usr/bin:/sbin:/bin # Activity reports every 10 minutes everyday 5-55/10 * * * * root command -v debian-sa1 > /dev/null && debian-sa1 1 1 # Additional run at 23:59 to rotate the statistics file 59 23 * * * root command -v debian-sa1 > /dev/null && debian-sa1 60 2
Many usage examples could be found here
http://www.thegeekstuff.com/2011/03/sar-examples/
sysbench
There is a package named sysbench which could be installed
apt-get install sysbench #or yum install sysbench
the man file will provide with loads of options. here are a few quick ones:
CPU
sysbench --test=cpu --cpu-max-prim=10000 run
File IO
Create a test file.
It is advised to use a file larger than the memory size to avoid it being cached.
sysbench --test=fileio --file-total-size=20G prepare
The test:
sysbench --test=fileio --file-total-size=20G --file-test-mode=rndrw --init-rng=on --max-time=300 --max-requests=0 run
Cleanup the created test file.
sysbench --test=fileio --file-total-size=150G cleanup
