Re: Performance

[Mukul Kotwani <mkotwani@yahoo.com>]

Where is PgMeter available? I dont see a binary or
source for it anywhere! Can you please point me to
where it is avilable?

IoMeter source is available on sourceforge.net. I
compiled the dynamo for Linux from there.You can
spcify the IP of the machine which will run the GUI as
a command line param to the dynamo as in: 

dynamo IPaddressOfMachineRunningIoMeter

Run the dynamo on the Linux machine as specified
above, the GUI(Iometer.exe itself!)  on the Windows
machine, and they should establish a connection. Once
the GUI and the dynamo are up and connected, you will
see disks on your Linux machine on the GUI running on
Windows, and can run tests as you normally do!

--- "Randy.Dunlap" <rddunlap@osdl.org> wrote:
> On Fri, 2 Aug 2002, Mukul Kotwani wrote:
> 
> | Running IOMeter against the Qlogic with IBM 15kRPM
> | JBODS, Im getting:
> |
> | 1) For 512 byte 100%random reads, I get *just* 260
> | IOPs per sec.On Windows with IOMeter, I get about
> 7000
> | foir the same config.
> |
> | 2) For 512k 100%sequential reads, I see 30MB per
> sec.
> | Windows gives 85MB/sec
> |
> | I see the similar performance with my driver on
> Linux.
> | I dont know whyit is so low, cannot be that low as
> | compared to windws, a few MB/sec or a few hundred
> IOPs
> | per sec difference is OK, but this difference is
> TOO
> | huge. I tried a bunch of diff host template
> params,
> | but doesnt seem to make a difference.
> |
> | Has anyone dont any testing with IOMeter? Or is
> there
> | any other toold I can use to test IOPs/througput?
> 
> Hi,
> 
> I'm not familiar with people using iometer with
> Linux.
> How does someone do that?
> I thought that it was a Windows client app.
> 
> A few people do use pgmeter (an iometer clean-room
> replacement) on Linux.  SGI and IBM presented a
> paper
> at USENIX just a few weeks ago in which pgmeter was
> used.
> (pgmeter.sf.net).
> 
> Also, iozone can measure IOs/second or throughput.
> www.iozone.org
> 
> ~Randy
> 
> | Thanks,
> | Mukul
> |
> | --- Craig Tierney <ctierney@hpti.com> wrote:
> | > For the Qlogic 2200F I am able to push 100 MB/s
> for
> | > reads and writes using multiple threads to a
> | > filesystem
> | > that is striped across mutliple host ports on
> the
> | > SAN.  Backend RAID is a
> | > Data Direct Networks SAN.  For a single thread
> to a
> | > ext3 filesystem
> | > and 2.4.18, I get about 70 MB/s for reads and
> | > writes.
> | >
> | > I have no Iops/sec numbers.
> | >
> | > Craig
> | >
> | >
> | > > Hello!
> | > > Does anyone have any performace numbers of a
> | > Qlogic
> | > > HBA? No of IOps/sec Max MBs /sec?
> | > >
> | > > Thanks!
> | > > M
> | > >
> __________________________________________________
> | > --
> | > Craig Tierney (ctierney@hpti.com)
> | > -
> 
> -- 
> ~Randy
> 


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