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Perfomance issues
I'm having an issue with my vps (network/performance related) and I would like to ask if these values from a couple of tests are still in the "ok" zone.
So, once I have logged in from ssh, I notice a couple of "hiccups" whenever doing the usual edits/actions. e.g. when I type
nano nix.php
it takes a couple of seconds to actually open nano. The file itself has only
phpinfo();
in addition to the php tags in it. After opening a file with vi or nano, when deleting a couple of words off the file it kinda sticks and I end up deleting more than I wanted when I can do anything on it.
So I went ahead and did the usual tests to rule out the usual suspects i.e. network, disk-io or memory issues.
wget freevps.us/downloads/bench.sh -O - -o /dev/null | bash CPU model : Intel(R) Xeon(R) CPU E3-1230 v3 @ 3.30GHz Number of cores : 1 CPU frequency : 491.911 MHz Total amount of ram : 256 MB Total amount of swap : 32 MB System uptime : 1 day, 1:02, Download speed from CacheFly: 26.4MB/s Download speed from Coloat, Atlanta GA: 12.4MB/s Download speed from Softlayer, Dallas, TX: 24.4MB/s Download speed from Linode, Tokyo, JP: 7.67MB/s Download speed from i3d.net, Rotterdam, NL: 5.02MB/s Download speed from Leaseweb, Haarlem, NL: 9.42MB/s Download speed from Softlayer, Singapore: 8.34MB/s Download speed from Softlayer, Seattle, WA: 12.5MB/s Download speed from Softlayer, San Jose, CA: 20.5MB/s Download speed from Softlayer, Washington, DC: 22.5MB/s I/O speed : 37.9 MB/s
Traceroute from home to server:
traceroute to 66.xx.xx.4 (66.xx.xx.4), 64 hops max 1 192.xx.xx.4 1,153ms 1,285ms 1,244ms 2 192.xx.xx.4 1,525ms 1,382ms 1,602ms 3 62.xx.xx.4 21,280ms 62.xx.xx.4 18,158ms 18,536ms 4 62.xx.xx.4 20,849ms 62.xx.xx.4 38,664ms 28,688ms 5 62.xx.xx.4 29,387ms 62.xx.xx.4 40,268ms 28,811ms 6 62.xx.xx.4 30,189ms 62.xx.xx.4 28,671ms 33,928ms 7 62.xx.xx.4 30,909ms 62.xx.xx.4 28,754ms 29,084ms 8 62.xx.xx.4 29,305ms 84.xx.xx.4 28,975ms 30,303ms 9 84.xx.xx.4 30,703ms 213.xx.xx.4 28,772ms 28,754ms 10 213.xx.xx.4 30,051ms 80.xx.xx.4 28,785ms 29,624ms 11 62.xx.xx.4 30,168ms 213.xx.xx.4 123,866ms 123,515ms 12 80.xx.xx.4 122,208ms 213.xx.xx.4 156,306ms 156,086ms 13 213.xx.xx.4 163,722ms 62.xx.xx.4 162,322ms 179,356ms 14 62.xx.xx.4 161,314ms 198.xx.xx.4 161,534ms 159,087ms 15 198.xx.xx.4 159,244ms * * 16 * * * 17 * * * 18 * * * 19 * * * 20 * * * 21 * * * 22 * * * 23 * * * 24 * * * 25 * * * 26 * * * 27 * * * 28 * * * 29 * * * 30 * * * 31 * * * 32 * * * 33 * * * 34 * * * 35 * * * 36 * * * 37 * * * 38 * * * 39 * * * 40 * * * 41 * * * 42 * * * 43 * * * 44 * * * 45 * * * 46 * * * 47 * * * 48 * * * 49 * * * 50 * * * 51 * * * 52 * * * 53 * * * 54 * * * 55 * * * 56 * * * 57 * * * 58 * * * 59 * * * 60 * * * 61 * * * 62 * * * 63 * * * 64 * * *
Traceroute from server to home:
traceroute to 85.xx.xx.4 (85.xx.xx.4), 30 hops max, 60 byte packets 1 198.xx.xx.4 0.021 ms 0.006 ms 0.005 ms 2 38.xx.xx.4 1.146 ms 62.xx.xx.4 0.377 ms 0.359 ms 3 213.xx.xx.4 0.421 ms 154.xx.xx.4 1.495 ms 154.xx.xx.4 17.107 ms 4 154.xx.xx.4 6.353 ms 154.xx.xx.4 1.891 ms 154.xx.xx.4 7.447 ms 5 66.xx.xx.4 1.466 ms 154.xx.xx.4 20.827 ms 154.xx.xx.4 1.229 ms 6 84.xx.xx.4 126.628 ms 154.xx.xx.4 31.568 ms 31.635 ms 7 154.xx.xx.4 31.711 ms 31.729 ms 154.xx.xx.4 21.319 ms 8 154.xx.xx.4 31.809 ms 62.xx.xx.4 133.240 ms 154.xx.xx.4 31.522 ms 9 213.xx.xx.4 33.146 ms 213.xx.xx.4 41.102 ms 213.xx.xx.4 38.385 ms 10 94.xx.xx.4 119.711 ms 94.xx.xx.4 117.963 ms 94.xx.xx.4 117.972 ms 11 84.xx.xx.4 131.436 ms 94.xx.xx.4 124.959 ms 213.xx.xx.4 32.712 ms 12 216.xx.xx.4 125.314 ms 62.xx.xx.4 162.718 ms 213.xx.xx.4 117.851 ms 13 94.xx.xx.4 130.235 ms 213.xx.xx.4 128.869 ms 62.xx.xx.4 135.347 ms 14 216.xx.xx.4 126.953 ms * * 15 * 62.xx.xx.4 136.625 ms 62.xx.xx.4 133.666 ms 16 * * 62.xx.xx.4 143.600 ms 17 62.xx.xx.4 142.314 ms 146.389 ms 140.642 ms 18 62.xx.xx.4 141.802 ms * 62.xx.xx.4 138.646 ms 19 * * 62.xx.xx.4 139.668 ms 20 * * * 21 * * * 22 * * * 23 * * * 24 * * * 25 * * * 26 * * * 27 * * * 28 * * * 29 * * * 30 * * *
MTR from home to server (mtr -r -w -n < ip >)
Start: Mon Jul 6 16:10:21 2015 HOST: mike-PC Loss% Snt Last Avg Best Wrst StDev 1.|-- 192.xx.xx.4 0.0% 10 2.6 1.6 1.3 2.6 0.3 2.|-- 192.xx.xx.4 0.0% 10 1.6 1.9 1.5 3.1 0.5 3.|-- 62.xx.xx.4 0.0% 10 18.6 19.7 18.3 24.3 1.9 4.|-- 62.xx.xx.4 0.0% 10 18.5 18.3 17.9 18.7 0.0 5.|-- 62.xx.xx.4 0.0% 10 37.9 36.7 29.4 45.0 5.0 6.|-- 62.xx.xx.4 0.0% 10 29.2 31.7 28.9 50.1 6.5 7.|-- 62.xx.xx.4 0.0% 10 30.0 30.6 28.8 38.7 3.0 8.|-- 62.xx.xx.4 0.0% 10 28.4 29.7 28.4 36.1 2.3 9.|-- 84.xx.xx.4 0.0% 10 29.6 29.9 29.2 32.5 0.9 10.|-- 80.xx.xx.4 0.0% 10 31.3 29.7 28.9 31.3 0.8 11.|-- 80.xx.xx.4 0.0% 10 29.3 33.5 29.3 61.5 10.0 12.|-- 62.xx.xx.4 0.0% 10 125.8 124.9 122.1 128.4 2.3 13.|-- 62.xx.xx.4 0.0% 10 119.4 112.5 45.2 163.6 56.6 14.|-- 62.xx.xx.4 0.0% 10 123.1 150.8 121.1 160.0 15.2 15.|-- 213.xx.xx.4 10.0% 10 160.0 158.4 155.8 163.5 2.2 16.|-- 66.xx.xx.4 10.0% 10 158.1 156.0 153.4 159.5 1.7
MTR from server to home:
HOST: xyzabc123.tld Loss% Snt Last Avg Best Wrst StDev 1. 198.xx.xx.4 0.0% 10 0.0 0.0 0.0 0.1 0.0 2. 38.xx.xx.4 0.0% 10 1.1 1.4 1.1 1.8 0.2 3. 154.xx.xx.4 0.0% 10 6.3 22.7 0.5 163.1 51.9 4. 154.xx.xx.4 0.0% 10 0.8 1.4 0.8 3.0 0.7 5. 154.xx.xx.4 0.0% 10 1.3 1.8 1.2 3.8 0.8 6. 154.xx.xx.4 0.0% 10 6.4 7.5 6.3 17.6 3.5 7. 154.xx.xx.4 0.0% 10 21.3 21.3 20.9 22.0 0.4 8. 154.xx.xx.4 0.0% 10 31.9 32.4 31.5 34.5 1.1 9. 154.xx.xx.4 0.0% 10 31.5 33.7 31.5 40.6 3.4 10. 154.xx.xx.4 0.0% 10 33.3 33.3 32.8 34.2 0.5 11. 213.xx.xx.4 0.0% 10 33.5 46.9 32.7 141.3 33.6 12. 94.xx.xx.4 0.0% 10 117.5 118.7 116.7 130.9 4.3 13. 84.xx.xx.4 0.0% 10 124.7 127.3 124.3 142.4 5.5 14. 216.xx.xx.4 0.0% 10 125.2 125.0 124.3 126.5 0.6 15. 62.xx.xx.4 0.0% 10 125.2 127.3 124.9 134.2 3.3 16. 62.xx.xx.4 0.0% 10 135.8 142.0 135.8 183.0 14.6 17. 62.xx.xx.4 0.0% 10 135.6 149.0 135.6 180.1 16.4 18. 62.xx.xx.4 0.0% 10 142.3 141.6 140.4 145.9 1.7 19. 62.xx.xx.4 10.0% 10 140.7 147.0 140.6 174.0 11.6 20. 85.xx.xx.4 10.0% 10 155.9 153.1 149.9 158.0 2.7
Ping from home to server (ping -c 20 < ip >):
PING 66.xx.xx.4 (66.xx.xx.4) 56(84) bytes of data. 64 bytes from 66.xx.xx.4: icmp_seq=1 ttl=43 time=156 ms 64 bytes from 66.xx.xx.4: icmp_seq=2 ttl=43 time=156 ms 64 bytes from 66.xx.xx.4: icmp_seq=3 ttl=43 time=159 ms 64 bytes from 66.xx.xx.4: icmp_seq=4 ttl=43 time=159 ms 64 bytes from 66.xx.xx.4: icmp_seq=5 ttl=43 time=158 ms 64 bytes from 66.xx.xx.4: icmp_seq=6 ttl=43 time=160 ms 64 bytes from 66.xx.xx.4: icmp_seq=7 ttl=43 time=158 ms 64 bytes from 66.xx.xx.4: icmp_seq=8 ttl=43 time=159 ms 64 bytes from 66.xx.xx.4: icmp_seq=9 ttl=43 time=162 ms 64 bytes from 66.xx.xx.4: icmp_seq=10 ttl=43 time=162 ms 64 bytes from 66.xx.xx.4: icmp_seq=11 ttl=43 time=151 ms 64 bytes from 66.xx.xx.4: icmp_seq=12 ttl=43 time=167 ms 64 bytes from 66.xx.xx.4: icmp_seq=13 ttl=43 time=151 ms 64 bytes from 66.xx.xx.4: icmp_seq=14 ttl=43 time=164 ms 64 bytes from 66.xx.xx.4: icmp_seq=15 ttl=43 time=151 ms 64 bytes from 66.xx.xx.4: icmp_seq=16 ttl=43 time=155 ms 64 bytes from 66.xx.xx.4: icmp_seq=17 ttl=43 time=161 ms 64 bytes from 66.xx.xx.4: icmp_seq=18 ttl=43 time=158 ms 64 bytes from 66.xx.xx.4: icmp_seq=19 ttl=43 time=160 ms 64 bytes from 66.xx.xx.4: icmp_seq=20 ttl=43 time=150 ms --- 66.xx.xx.4 ping statistics --- 20 packets transmitted, 20 received, 0% packet loss, time 19026ms rtt min/avg/max/mdev = 150.935/158.336/167.383/4.507 ms
Ping from server to home:
PING 85.xx.xx.4 (85.xx.xx.4) 56(84) bytes of data. 64 bytes from 85.xx.xx.4: icmp_seq=1 ttl=51 time=155 ms 64 bytes from 85.xx.xx.4: icmp_seq=2 ttl=51 time=164 ms 64 bytes from 85.xx.xx.4: icmp_seq=3 ttl=49 time=151 ms 64 bytes from 85.xx.xx.4: icmp_seq=4 ttl=51 time=155 ms 64 bytes from 85.xx.xx.4: icmp_seq=5 ttl=51 time=163 ms 64 bytes from 85.xx.xx.4: icmp_seq=6 ttl=51 time=163 ms 64 bytes from 85.xx.xx.4: icmp_seq=7 ttl=51 time=154 ms 64 bytes from 85.xx.xx.4: icmp_seq=8 ttl=51 time=155 ms 64 bytes from 85.xx.xx.4: icmp_seq=9 ttl=49 time=149 ms 64 bytes from 85.xx.xx.4: icmp_seq=10 ttl=51 time=153 ms --- 85.xx.xx.4 ping statistics --- 10 packets transmitted, 10 received, 0% packet loss, time 9155ms rtt min/avg/max/mdev = 149.394/156.635/164.945/5.124 ms
What do you think? Should I be worried of the packet losses? Do the packet losses make my editors in ssh lag?
Thank you for your help
Comments
It depends where this server is located. If its in Outer Mongolia then its pretty good performance, if its USA, Europe then its pretty slow.
If your SSH doesn't lag while you hold down "a" key, then it won't lag when you open editor. It's almost certainly the disk being bottleneck. dd test doesn't tell you much though, try timing apt-get install [somepackage] (somehow you should ignore the download time though) and compare it to another VM.
Edit: but you also said you delete more than you want to, which indicates there IS some lag in your SSH session, which would point to network issue.
IO and cpu clock speed quiet slow.
The server is in Texas US. I'm in Berlin Germany
There is a lag when I hold down "a" key. The lag in the editor is quite annoying though
Yeah, I was also surprised to see those values. Hadn't quite noticed them from day one.
Ok then it is probably combination of I/O slow and network slow. It's unclear from the mtr where the issue lies.
The network throughput is a little sucky, the IO performance looks slow and as @budi1413 said the CPU speed is also slow.
Is this a reputable supplier? Or just a very oversold box?
It's ip-systems-limited.
Here is a more comprehensive report from one month ago
Hmm, now that you ask it does sound like an oversell.
I don't know the vendor but there are a few threads on here. What do you pay for that server per month?
It is a lowendbox just used as a sandbox. I pay €3.5/year
For that price, I think its definitely a good deal.
@MarkTurner said:
I do own another lowendbox on another host in jacksonville. The i/o speeds are in the mid 400MB/s and network is almost double of what I'm getting here
€3.5/year barely covers the IP/Network costs. They probably get €3 by the time they've paid the payment fees and one support ticket and that €3 is gone.
More than likely that 400MB/s server hasn't filled up yet, maybe that company hasn't been as successful at selling.
Perfect example of "you get what you pay for"
probably server load's too high, what's your top reading like?
Not much running here...
well with whatever stats they are giving out ads for, the i/o should at least be better than what they have right now.
what of iostat?
I've had that kind of delay with a $4/yr VPS, and then it got better after a while. I don't think a provider can guarantee much regularity and speed for that price. Why not get a second LEB and compare?
I already have another leb from another provider. never had the said issues. I will just file a ticket and see how this goes.
iostat won't work on openvz...well afaik. neither will hdparm.