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тАО07-13-2010 02:51 AM
тАО07-13-2010 02:51 AM
EVA6400 Performance issue with Windows 2008 R2 Hyper-V
Hi Team,
We are facing Write Latecny issue with EVA6400 (192*450GB Disk group) especially when doing export(cloning) job or copy date from one LUN to another LUN. Write latency going over 200+ms when doing export job.
Attached some of the graphs attached for reference.
observations:
1. Write Latecncy is going 200+ms when exporting
2. Average KB/Write is going 800KB+
Regards,
Siva
We are facing Write Latecny issue with EVA6400 (192*450GB Disk group) especially when doing export(cloning) job or copy date from one LUN to another LUN. Write latency going over 200+ms when doing export job.
Attached some of the graphs attached for reference.
observations:
1. Write Latecncy is going 200+ms when exporting
2. Average KB/Write is going 800KB+
Regards,
Siva
2 REPLIES 2
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тАО07-14-2010 01:52 AM
тАО07-14-2010 01:52 AM
Re: EVA6400 Performance issue with Windows 2008 R2 Hyper-V
EVAs are not designed to handle I/O sizes so big. Can you change some parameter on the application so that it does 128 KB writes?
Also, I see a lot of traffic on the mirror port, this can lead to a saturation point. This happens faster when using VRAID 5 vdisks.
Also, I see a lot of traffic on the mirror port, this can lead to a saturation point. This happens faster when using VRAID 5 vdisks.
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тАО10-13-2010 08:04 PM
тАО10-13-2010 08:04 PM
Re: EVA6400 Performance issue with Windows 2008 R2 Hyper-V
Hi,
HBA vendors released latest drivers in that we can adjust the IO sizes.
thanks,
Siva
HBA vendors released latest drivers in that we can adjust the IO sizes.
thanks,
Siva
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