[OpenIndiana-discuss] VERY slow server performance
Stuart & Shirley
antarctic at sympatico.ca
Mon Sep 10 01:41:18 UTC 2012
Looking through /var/adm/messages, there is the following with respect to
interrupts:
Sep 7 21:03:33 mediaserver intrd[689]: [ID 702911 daemon.notice] Optimizing
interrupt assignments
Sep 7 21:03:33 mediaserver intrd[689]: [ID 702911 daemon.notice] Interrupt
assignments optimized
This was several days past the last system re-boot.
Playing more with the system, if I run system monitor, file transfer speeds
up dramatically as well as mouse operation almost returns to normal.
It's as if interrupts are turned off for the mouse and the Ethernet port -
if I run system monitor which starts to poll the Ethernet port as well as
access the mouse to update the screen, operation almost gets back to normal.
Any suggestions on where to go from here...greatly appreciated.
Stuart
-----Original Message-----
From: Richard Elling [mailto:richard.elling at richardelling.com]
Sent: September-06-12 7:54 PM
To: Discussion list for OpenIndiana
Subject: Re: [OpenIndiana-discuss] VERY slow server performance
On Sep 6, 2012, at 8:08 AM, Roel_D <openindiana at out-side.nl> wrote:
> Reading this it reminds me of the old days where IRQ's were important
> to systems.
> Those days my serial mouse could interfere with my modem.
>
> But I thought those days were way back..
Interrupt conflicts are syslogged at boot (and other times that the device
tree is shaken). Check /var/adm/messages for clues.
-- richard
>
>
> -----Original Message-----
> From: Ben Taylor [mailto:bentaylor.solx86 at gmail.com]
> Sent: donderdag 6 september 2012 16:56
> To: Discussion list for OpenIndiana
> Subject: Re: [OpenIndiana-discuss] VERY slow server performance
>
> On Thu, Sep 6, 2012 at 12:48 AM, Stuart & Shirley
> <antarctic at sympatico.ca>
> wrote:
>>
>> Hi - Look for some assistance in improving disk access performance on
>> my OpenIndiana install.
>>
>> Wanting to upgrade my server based on OpenSolaris and ZFS to 3TB
>> drives, I upgraded the OS to OpenIndiana 151a.
>>
>> Performance is terrible over the network as compared to the previous
>> OpenSolaris installation. Hardware is identical with the exception of
>> a second SATA controller (a second identical Supermicro
>> AOC-SAT2-MV8) and additional hard drives.
>>
>> Perhaps related, the USB mouse is virtually none-operational. It will
>> only update the location of the mouse for about 0.5s out of every 10s.
>> This has not been an issue, as I usually connect remotely. But still
>> an indication that all is not well.
>>
>> Transfers on the machine, from drive to drive appears about the same
>> as when running under OpenIndiana - but across the networks it's very
> slow.
>>
>> Moving a large file from my windows 7 machine across the GbE lan -
>> transfers at ~11.5MB/s as reported by windows copy.
>>
>> Using zpool iostat, the write bandwidth is reported as high as 20M.
>>
>> Now if I run zpool iostat continuously (display every 3 seconds),
>> copy performance increases - moving into the 16 to 17 MB/s range as
>> reported by windows.
>>
>> Copying from one storage pool to another, zpool iostat will report
>> write bandwidths of 26M.
>>
>>
>> My pool configuration is detailed below.
>>
>> Other's slow performance had been pegged to flow control enabled on
>> the Ethernet port - this was disabled. It did make a difference, but
>> not that dramatic.
>>
>> Any suggestions on how to improve performance and how to fix the
>> mouse would be greatly appreciated!
>>
>> Flow control properties:
>>
>> LINK PROPERTY PERM VALUE DEFAULT POSSIBLE
>> e1000g0 flowctrl rw no bi
> no,tx,rx,bi
>>
>> Zpool configurations:
>> pool: rpool
>>
>> state: ONLINE
>>
>> scan: resilvered 4.63G in 0h7m with 0 errors on Wed Jun 6 22:12:16
>> 2012
>>
>> config:
>>
>> NAME STATE READ WRITE CKSUM
>> rpool ONLINE 0 0 0
>> mirror-0 ONLINE 0 0 0
>> c3t0d0s0 ONLINE 0 0 0
>> c3t1d0s0 ONLINE 0 0 0
>>
>> errors: No known data errors
>>
>> pool: tank_12T
>>
>> state: ONLINE
>> scan: none requested
>> config:
>> NAME STATE READ WRITE CKSUM
>> tank_12T ONLINE 0 0 0
>> raidz2-0 ONLINE 0 0 0
>> c3t7d0 ONLINE 0 0 0
>> c3t3d0 ONLINE 0 0 0
>> c3t5d0 ONLINE 0 0 0
>> c3t6d0 ONLINE 0 0 0
>> c5d0 ONLINE 0 0 0
>> c8d0 ONLINE 0 0 0
>>
>> errors: No known data errors
>>
>> pool: tank_m
>>
>> state: ONLINE
>>
>> scan: none requested
>> config:
>> NAME STATE READ WRITE CKSUM
>> tank_m ONLINE 0 0 0
>> mirror-0 ONLINE 0 0 0
>> c3t2d0 ONLINE 0 0 0
>> c7t6d0 ONLINE 0 0 0
>> c6d0 ONLINE 0 0 0
>> mirror-1 ONLINE 0 0 0
>> c3t4d0 ONLINE 0 0 0
>> c7t7d0 ONLINE 0 0 0
>> c4d0 ONLINE 0 0 0
>>
>> errors: No known data errors
>
> The mouse interrupt issue is, in my experience, is not a new one.
>
> I've been seeing this on solaris laptops for as long as I can remember.
> The interesting issue for you is this only happened with the addition
> of another sata controller. This leads me to believe that there's
> some rather confused logic in the interrupt handler, such that the
> mouse interrupts basically gets preempted by the interrupts between
> the sata controller as data is passed from one controller to the other.
>
> Ben
>
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>
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--
illumos Day & ZFS Day, Oct 1-2, 2012 San Fransisco www.zfsday.com
Richard.Elling at RichardElling.com
+1-760-896-4422
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