great iperf , slow network performance
Back to the forum ,
I installed Nexentastor on a pretty decent machine HP ML110, 4x7200 1TB Samsung SATA, 10GB RAM , Vertex2 SSD , dual PRO1000 NIC , Dell 3725 switch. Dedup, compression off iperf benchmark > 700mbs constant bonnie benchmark
WRITE CPU RE-WRITE CPU READ CPU RND-SEEKS
71MB/s 8% 39MB/s 5% 96MB/s 4% 192/sec
70MB/s 8% 39MB/s 4% 96MB/s 4% 214/sec
142MB/s 8% 78MB/s 4% 193MB/s 4% 203/sec
capacity operations bandwidth pool alloc free read write read write
pool1 1.04T 2.59T 26 405 62.4K 18.8M
raidz1 1.04T 2.59T 26 405 62.4K 18.8M
c0t0d0 - - 22 195 20.8K 6.30M
c0t1d0 - - 16 356 10.6K 19.7M
c0t2d0 - - 22 279 18.5K 14.4M
c0t3d0 - - 19 365 12.5K 19.6M
cache - - - - - -
c0t4d0 424M 36.8G 0 85 0 10.7M
CIFS, FTP, NFS performance 4MB/s (34 mbps ) . Test system 2 Velociraptor RAID0 --> Nexenta or VM on iSCSI-> Nexenta I tried disabling/enabling cache drives (OCZ Vertex 2 ) , limiting ARC memory to 8GB , disable/enable synchronous writes pretty much everything I could think of .
The funny thing is that the appliance was working around 60MB/s and than dropped to awful 4MB/s . I do have same appliance installed as VM on ESXi with 4GB RAM , physical RDM .. and is constantly working at around 10MB/s .. Configuration pretty much identical .
Please direct me where I should look .
It is more than a month since I am testing Nexenta for a production system . I was quite excited about cheap dedup, compression , sync . Now ... don;t know what to think .
More than decent hardware , PRO1000 NIC , Dell 3725 ... and getting 30Mbps ... that's strange .
Any help will be appreciated . I am already late to deploy the production system and really love Nexenta . I am planning to apply as a reseller/partner with Nexentastor .. but not quite sure how easy would be to have at least 1 solid production system