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06-02-2015 01:05 PM
06-02-2015 01:05 PM
Cluster Storage p4000 StoreVirtual - bad Performance
Hay,
I have 2 p4300 g2 with 2 nic gb, 8disk raid5, and 1 p4330 g8 with 4nic gb 8disk raid5, all storages pluged on switch 1910 and all ports of storage are aggregate on switch and mtu9000, all p4000 on cluster running software version 12.
The server is DL380p gen8 with 2nic agregate to san with mtu9000 and 2nic agregate to lan, over this server running xenserver 6.5.
The VM running is Oracle Linux 6.6 x64 with filesystem ext4, on my tests using dd...
dd if=/dev/zero of=disco bs=1M count=1000
The result is 60mb/s
dd if=disco of=/dev/null bs=1M count=1000
The results 5gb/s
My question is, why 60mb/s when it could have 200mb/s (2nic 1gb nic by nic = 2gb +- 200mb/s).
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06-03-2015 03:21 PM
06-03-2015 03:21 PM
Re: Cluster Storage p4000 StoreVirtual - bad Performance
There could be different issues in such a setup that can affect performance.
First thing to know is that you would never get wire speed performance, just based on the architecture of StoreVirtual.
Not looking at any hardware or switch configuration issues, the first thing I would look at, is if you can implement MPIO in
Linux. This will impact read performance.
Also, are the P43x0 NICs configured with bonding that match the switch's LACP configuration?
What about the DL380p NICs, how are they configured WRT aggregation?
Lastly, have you tested your storage performance at the hypervisor level?
VM performance can be affected by hypervisor settings - i.e. networking stack etc.
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06-04-2015 04:06 PM - edited 06-04-2015 04:08 PM
06-04-2015 04:06 PM - edited 06-04-2015 04:08 PM
Re: Cluster Storage p4000 StoreVirtual - bad Performance
Thnak @a_o!
All bond nic is configured over LACP, and switch have LACP enable on the group port aggregation.
I tested performance using local disk over hypervisor, the result it good 260mb/s.
I will configure MPIO for that I need to break the "bond" of "nic" and add a different network each "nic".
Example.
STG1 = 192.168.200.1 / 192.168.201.1
STG2 = 192.168.200.2 / 192.168.201.2
STG3 = 192.168.200.3 / 192.168.201.3
CLUSTER STORAGE IP (VIP) = 192.168.200.100 /192.168.201.100
XenServer = 192.168.200.10 / 192.168.201.10
In XenServer I have already enabled the MPIO.
In this way I would have MPIO configured correctly??
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06-08-2015 09:24 AM
06-08-2015 09:24 AM
Re: Cluster Storage p4000 StoreVirtual - bad Performance
dd is actually a single threaded process and you are limited by the latency each I/O is experiencing and the measured 60 MBps is in the expected range for a single threaded process.
If you are using XenServer, then you should stay with the NIC bonding. MPIO is actually not supported for XenServer.
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06-08-2015 10:33 AM
06-08-2015 10:33 AM
Re: Cluster Storage p4000 StoreVirtual - bad Performance
greats man @HPstorageTom
The xenserver version running is 6.5, in CMC i have varius sessions over one IP, this not multipath?
I'll test the vmware on the same server, and compare the results...
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06-08-2015 11:21 PM
06-08-2015 11:21 PM
Re: Cluster Storage p4000 StoreVirtual - bad Performance
You do have multiple iSCSI sessions from the same initiator. If you do have multiple NICs in your XenServer, then you do use NIC bonding on this XenServer.
If I do use multipath (MPIO) in server connected to a StoreVirtual system, then I do have multiple NICs in this server and each NIC with his own IP address. MPIO is then taking care of the distribution of the I/O's across the NICs. We do support for instance the native MPIO of VMware and Windows. The attached screenshot shows an example of a Windows server with 2 NICs (192.168.58.17 and 192.168.58.18) using only the native Windows MPIO to connect to a StoreVirtual system (192.168.58.29).
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06-09-2015 06:55 PM
06-09-2015 06:55 PM
Re: Cluster Storage p4000 StoreVirtual - bad Performance
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06-09-2015 11:05 PM
06-09-2015 11:05 PM
Re: Cluster Storage p4000 StoreVirtual - bad Performance
No you use a single cluster VIP to connect to.
If you do have OS that is supported for MPIO, then you set a separate IP address for each iSCSI NIC of this server.
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06-10-2015 04:27 AM
06-10-2015 04:27 AM
Re: Cluster Storage p4000 StoreVirtual - bad Performance
@HPstorageTom Good!!!!!!
Ok, xenserver don't suport MPIO using p4000. FINISH!!
I can modifi any parameter on p4000 or xenserver to maximize performance? I an using lacp in all bonds nic (Storages and XenServer's).
Because is much dificult my xenserver use all performance network...
Thanks!!!!