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Appaling performance on Solaris 10 running on M5000 Server

thread60-1628819

Appaling performance on Solaris 10 running on M5000 Server

Appaling performance on Solaris 10 running on M5000 Server

(OP)
Hi

We have Solaris 10 running on a M5000 server.
We are trying to investigate a serious performance issue on the server. We have looked at various things such as I/O, CPU, memory, network...

CPU
The CPU seems to be 80% idle.

Disk I/O
isk I/O is not so bad.
We have occasional peak on /tmp

Memory utilization
Around 40% of memory is free, the system is not swapping too much.

Network
the network utilization is around 50%.

The system has 64 cores 128GB physical memory, 1GB network (fibre), 4 128GB internal disks. We have mirrored 2 disks together to make it two separate mirrored volumes.

I have ran out of ideas, I'm not sure where else to look.

Any help will be greatly appreciated.

Thanks and Regards
KBR
 

RE: Appaling performance on Solaris 10 running on M5000 Server

you might want to explain more about what performance issues you are having if you expect to possibly get help.

 

RE: Appaling performance on Solaris 10 running on M5000 Server

We definately need more info, but.....

I was installing Solaris 10 on a PowerEdge 2850 with a PERC RAID card....it was horribly slow even though there was no disk or cpu activity.  I reconfigured it not to use RAID and suddenly everything was fine.  I then traced it to a compatability  issue with my PERC card.

Try running it in SCSI and not RAID...see if that fixes it

RE: Appaling performance on Solaris 10 running on M5000 Server

You might also want to investigate your mirroring, particularly with regard to possible controller issues.

The internet - allowing those who don't know what they're talking about to have their say.

RE: Appaling performance on Solaris 10 running on M5000 Server

A GigE network adapter that is saturated can consume a cpu.

System is not swapping much.  Well with 128GB of RAM, and you have 40% free memory, I would ask why you are paging.

Disk I/O isn't bad.  What do you consider bad?  And you state it peaks on /tmp.  /tmp is a filesystem, and if you only have two disks, then most other filesystems will have the same disk as /tmp.

Running a database?  Java?  Not even a vmstat or prstat.  Did this just begin occuring?

I have 7 years on large Solaris servers and 16 years on large AIX servers, so a bit of advice: if you want some direction on where to look, provide some data.

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