Test the disk I/O of your VPS
BuyVM OpenVZ (256/512 MB RAM, 30 GB HDD, 1 TB B/W)
dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 5.78672 s, 186 MB/s
dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 5.93356 s, 181 MB/s
Hostigation KVM (128 MB RAM, 10 GB HDD, 500 GB B/W)
dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 6.29459 s, 171 MB/s
dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 11.1185 s, 96.6 MB/s
eNetSouth OpenVZ (786/1024 MB RAM, 20 GB HDD, 1000 GB B/W)
dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 31.4363 s, 34.2 MB/s
dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 13.1464 s, 81.7 MB/s
dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 13.4436 s, 79.9 MB/s
WhyNOTaVPS OpenVZ (786/1024 MB RAM, 33 GB HDD, 444 GB B/W)
dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 24.3903 s, 44.0 MB/s
Comments
My MyCpanel Free VPS:
[[email protected] ~]# dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 20.6291 seconds, 52.0 MB/s
KiloServe 1GB RAM Low End Box special
RapidoVPS 256MB RAM $2.50 month special
not too fast : dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync
Let's bet which dot-name will collapse first ;)
A fresh BuyVM OpenVZ-128MB:
hostigation 64 MB
Let's bet which dot-name will collapse first ;)
TurnKey Internet
Hetzner
...not so lowendbox but very shity..
@asf, which plan do you have with turnkey? (that's very very slow disk I/O)
Let's bet which dot-name will collapse first ;)
@tommy Some prehistoric wht custom plan :)
A little over a week later, the same BuyVM OpenVZ-128MB:
Ouch.
Hi Marcel,
Could you log a ticket? It's quite possible there's a bad drive, but we'll need to track it first :)
Thanks,
Francisco
BuyShared - Shared & Reseller Hosting / cPanel + Softaculous + CloudLinux / Pure SSD! / Free Dedicated IP Address
Chicago VPS 1GB Ram
A fresh Rackspace VPS lol
My buyvm is starting to degrade xD but still the fastest of all my LEBs
Will do. Please don't suspend my account and delete all the backups ;D
Criperz Prodigy 128meg annual:
Oversold much?! Very variable, same test reported 1.9 MB/s a minute later.
BuyVM 256meg:
BuyVM 128meg annual:
QualityServers 128meg annual (from the recent deal):
bHosts 1.5gb:
evorack 128 xen (not as impressive as other but very stable, no complain):
vooserver 128 xen (just like evorack, no complain):
edis 128 kvm (always have great io, I wish they have better billing/support panel):
bitcable 256 kvm (new, for test):
securedragon 96 xen:
BuyVM 128 MB new
CripperZ 64 MB
CripperZ 128 MB
123Systems 192 MB
123Systems 512 MB
SpotVPS 1 GB
Up2VPS 1 GB
IPAPco SuperVPS 4 GB
IPAPco SuperVPS 2GB
Cripperz i/o is very disappointing. Also funny that my cheaper 123Systems one is faster than the more expensive one.
damn buyvm 128 mb, which is the cheapest out of all of them, is smoking everyone else lol
my question is (out of curiosity): what affects disk i/o speed on a vps?
Other clients in the node.
Database trashing
Overselling -> Swapping
Hardware configuration (RAID or not, and what disks)
I'm still wondering why we should use bs=64k for dd test? is this value some kind of standard? if it is, why 64k?
SpotVPS - 256MB
BuyVM - 128MB OpenVZ
FeHosting - 256MB OpenVZ
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@circus - it's a reasonable middle grounds for most RAID stripe sizes and if the disk is SSD or mechanical. SSD's can handle say, a 4k block size, where as a mechanical drive won't be able to handle that kind of IOP's without giving really poor results (like 2 - 3MB/sec per disk kinda crap)
Francisco
BuyShared - Shared & Reseller Hosting / cPanel + Softaculous + CloudLinux / Pure SSD! / Free Dedicated IP Address
123Systems - 192MB OpenVZ (Dallas)
123Systems - 256MB OpenVZ(Chicago)
BuyVM - 256MB KVM
asia vps - asia dedicated server - vps gia re - hosting gia re
1073741824 bytes (1.1 GB) copied, 17.421 seconds, 61.6 MB/s
Fuck this is one of my dedicated servers running in Raid 1 if I remember, it's not very loaded, how can I "fix" this?
You can spam me with any yearly shared hosting deal.
How many disks are in the array? just 2?
Francisco
BuyShared - Shared & Reseller Hosting / cPanel + Softaculous + CloudLinux / Pure SSD! / Free Dedicated IP Address
io wise, raid 1 is no different than no raid at all CMIIW and 61 MB/s is normal for sata ^_^ drive
my desktop:
something must be really really wrong :(
edit: It was only a bad cable, thank god.
That's pretty normal for your typical RAID1 SATA drive dedicated server.
This is why you'll often see VPS hitting 150 and even 250 MB/s disk writes... it's due to the multiple disk spindles. If you look at the tests above, most of us VPS companies use up to 16 hard drives in our RAID arrays compared to your dedicated running 2 drives in RAID1 (mirror).
And nobody even posts read speeds but it's not uncommon to get 1GB/s+ reads on a quality VPS.
A dedicated isn't necessarily faster than a VPS.
Dollar for dollar, every one of our VPS' would whup a dedicated in processing power and disk I/O :)
@kiloserve: Samsung's SpinPoint F3, WD's Black Caviar and RE4 all write/read above 100 MB/s. A dedicated isn't necessarily faster than a VPS, but you can atleast use all resources, not only burst them.
You won't commonly find the Spinpoints and WD Blacks in dedicated servers.
Most dedicateds use the WD RE3 drives or standard desktop drives which were about 60-70 Mb/s.
Some providers now are using the RE4's.
I'm guessing ztec has an RE3 or older desktop drive and that is about the right speed for those drives.
It's not an high tech server but it's not close to sloppy either. It does it's job very good for a great price, I own multiple dedicated servers and even more VPS'. Thanks for the info btw, got a little worried.
You can spam me with any yearly shared hosting deal.
Not bad for a 5400rpm 2.5inch sata drive
I'm jelly, any special trick? what brand is it?
VMWare Fusion seems to ignore the conv=fdatasync part.
It's the FUJITSU MJA2250BH FFS G1 that came with my MacBook Pro.
Such 2.5' 5400rpm drive can only give a result around 60 - 70 mb/s in real world test.
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dd test sometimes does say nothing; I did a very careful benchmark regarding the "computational capability" of VPS on a buyVM OVZ512 box with IO at ~183Mb/s and a 123systems OVZ192 box with IO at ~43Mb/s. I installed R software, a very well-known statistics utility, on these two boxes and ran a pre-processing analysis on 564 microarrays in CEL.gz format which includes the processes of decompress the data files, loading images and scaling the signals. The compressed data size is 1.6GB. I used the time command to record the computational time. The results are very interesting; the buyVM box performs worse than that of 123sys, please see attached,
buyVM512 (5.95/month)
123systems 192mb-special $15/year
I was really disappointed with the benchmark results, but not sure what to say. Perhaps I need to ask buyVM for a downgrade on the box. :)
I did the test again; it seems that things went worse on my buyvmOVZ512;
meanwhile, the 123sysOVZ192 does not change much,
In comparison with 123sys one, my box with buyOVZ (2 CPU cores; Intel(R) Xeon(R) CPU L5520 @ 2.27GHz, 2260.936MHz and 4GB cache) consumes more system resources but gives worse performance than that of 123sys (2vCPU, Intel(R) Xeon(R) CPU E5520 @ 2.27GHz, 1133.373MHz, 8GB cache)
Anyone knows the reason? your explanation is appreciated!
You are cheating.... :/
@tinray I'm still needing to get around to your ticket to see if there's something I may have screwed up in one of the newer pony kernels.
It's quite possible I swapped something, or there's a setting on your VM, that i'm not noticing.
If you're able to give me a bit of time to look into it, i'll check into it more later today after I'm done prepping the new router.
Francisco
BuyShared - Shared & Reseller Hosting / cPanel + Softaculous + CloudLinux / Pure SSD! / Free Dedicated IP Address
please consider my ticket #249702. I did discuss with Anthony regarding this but we not yet come to an end lately.
My latest test;
buyVM512
123sys192
I would upgrade my box to a 4core plan but I am much worry about the performance of the box. Once I upgrade it but find out it performs badly then I just leave it unused. I currently have a some of such boxes.
Each test was run three times and the middle ranking result was picked.
BuyVM 128 MB OpenVZ (test):
BuyVM 128 MB OpenVZ (user):
BuyVM 256 MB OpenVZ (site):
BuyVM 512 MB 500 GB Storage KVM (files):
Hostigation 64 MB Backup OpenVZ (backup):
Hostigation 1024 MB KVM (mine):
Note: This morning the server was doing a solid 260 MB/s, currently it's under disk load :P
Feral Hosting Helium Slot (feral):
Note: There were about 20 active torrents running at the time of the test, I've gotten around 150 MB/s before.
Feral Hosting Neon Slot (sheep):
Note: There were about 20 active torrents running at the time of the test, I've gotten around 150 MB/s before.
@maxexcloo, do feral give your own ip, or is it share ip?
Shared :P
VMLIT 256MB OpenVZ VPS pretty much idling at the time.
LaaS (love as a service) : e.g. https://aga.pw/Lowendtalk (greek only)
Hostigation 768M OVZ VPS
4096MB of my Home Server :P (on VMware)
qualityservers eliminator
dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync
16384+0 records in
16384+0 records out
1073741824 bytes (1.1 GB) copied, 29.6317 s, 36.2 MB/s
Simple Server Setup
same here but slower: qualityservers eliminator [email protected]:~# dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 38.0414 s, 28.2 MB/s [email protected]:~#
buyvm: [email protected]:~# dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync dd: writing `test': Disk quota exceeded 292+0 records in 291+0 records out 19103744 bytes (19 MB) copied, 0.053323 s, 358 MB/s [email protected]:~#
free 15Gb backup space? https://copy.com?r=acPdcX
Eww... SemoWeb 1024MB (used for my webhost as Kloxo, to be migrated to cPanel soon):
QualityServers.co.uk UK XEN Eliminator on XM7 node