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IDS Forum

Re: RE: Poor performance on VMWare

Posted By: Art Kagel
Date: Friday, 30 May 2014, at 6:24 a.m.

In Response To: RE: RE: Poor performance on VMWare (JAVIER PEREZ ARENAL)

Turn off affinity. It only helps on Numa architecture machines and can
hurt performance on most systems. Not your main problem I think, but ...

Art

Art S. Kagel, Principal Consultant
ASK Database Management

Blog: http://informix-myview.blogspot.com/

Disclaimer: Please keep in mind that my own opinions are my own opinions
and do not reflect on the IIUG, nor any other organization with which I am
associated either explicitly, implicitly, or by inference. Neither do
those opinions reflect those of other individuals affiliated with any
entity with which I am affiliated nor those of the entities themselves.

On Fri, May 30, 2014 at 3:53 AM, JAVIER PEREZ ARENAL <jperez@uniovi.es>
wrote:

> Hi Jon
>
> The onstat -g ath command:
>
> [informix@ifx1 ~]$ onstat -g ath | grep kaio
> 45 48dd0d30 0 3 IO Idle 8c=
> pu* kaio
> 46 48dd20e0 0 3 IO Idle 1c=
> pu* kaio
> 73 49408698 0 3 IO Idle 10c=
> pu* kaio
> 79 492237b8 0 3 IO Idle 9c=
> pu* kaio
> 85 49223530 0 3 IO Idle 11c=
> pu* kaio
> 92 494509b8 0 3 IO Idle 12c=
> pu* kaio
>
> I ran also onstat -g iov with this results (I think this could be relevant=
> ):
>
> [informix@ifx1 ~]$ onstat -g iov
>
> IBM Informix Dynamic Server Version 12.10.FC3WE -- On-Line -- Up 00:13:13
> -=
> - 5840896 Kbytes
>
> AIO I/O vps:
> class/vp/id s io/s totalops dskread dskwrite dskcopy wakeups io/wup e=
> rrors tempops
> fifo 7 0 i 0.0 0 0 0 0 1 0.0 =
> 0 0
> kio -1 0 i 50.5 39984 39963 21 0 58051 0.7 =
> 0 0
> kio -1 1 i 55.0 43565 43543 22 0 62181 0.7 =
> 0 0
> kio -1 2 i 28.5 22558 22547 11 0 33011 0.7 =
> 0 0
> kio -1 3 i 41.6 32908 32896 12 0 47171 0.7 =
> 0 0
> kio -1 4 i 7.8 6173 6171 2 0 9215 0.7 =
> 0 0
> kio -1 5 i 1.4 1100 1094 6 0 1450 0.8 =
> 0 0
> msc 6 0 i 0.0 5 0 0 0 6 0.8 =
> 0 5
> aio 5 0 i 62.8 49777 48764 837 0 49690 1.0 =
> 0 49607
> aio 17 1 i 0.5 373 148 224 0 415 0.9 =
> 0 370
> aio 18 2 i 0.3 218 148 69 0 196 1.1 =
> 0 214
> aio 19 3 i 0.1 59 3 55 0 34 1.7 =
> 0 56
> aio 20 4 i 0.1 44 0 43 0 26 1.7 =
> 0 40
> aio 21 5 i 0.0 35 1 34 0 23 1.5 =
> 0 32
> pio 4 0 i 0.0 0 0 0 0 1 0.0 =
> 0 0
> lio 3 0 i 0.0 0 0 0 0 1 0.0 =
> 0 0
>
> .... and this is the online.log fragment corresponding to the RDBMS start:
>
> Fri May 30 09:35:14 2014
>
> 09:35:14 Requested shared memory segment size rounded from 4498176KB to 44=
> 99456KB
> 09:35:14 Shared memory segment will use huge pages.
> 09:35:14 Segment locked: addr=3D0x95e00000, size=3D4607442944
> 09:35:19 Successfully added a bufferpool of page size 2K.
>
> 09:35:20 Event alarms enabled. ALARMPROG =3D '/opt/IBM/informix/etc/alarm=
> program.sh'
> 09:35:20 Booting Language <c> from module <>
> 09:35:20 Loading Module <CNULL>
> 09:35:20 Booting Language <builtin> from module <>
> 09:35:20 Loading Module <BUILTINNULL>
> 09:35:25 Affinitied VP 8 to phys proc 1
> 09:35:25 Affinitied VP 9 to phys proc 2
> 09:35:26 Affinitied VP 10 to phys proc 3
> 09:35:26 Affinitied VP 11 to phys proc 4
> 09:35:26 Affinitied VP 12 to phys proc 5
> 09:35:26 Affinitied VP 1 to phys proc 0
> 09:35:26 Affinitied VP 12 to phys proc 5
> 09:35:26 Affinitied VP 10 to phys proc 3
> 09:35:26 Affinitied VP 9 to phys proc 2
> 09:35:26 Affinitied VP 8 to phys proc 1
> 09:35:26 Affinitied VP 11 to phys proc 4
> 09:35:26 DR: DRAUTO is 0 (Off)
> 09:35:26 DR: ENCRYPT_HDR is 0 (HDR encryption Disabled)
> 09:35:26 Event notification facility epoll enabled.
> 09:35:27 IBM Informix Dynamic Server Version 12.10.FC3WE Software Serial N=
> umber AAA#B000000
> 09:35:29 IBM Informix Dynamic Server Initialized -- Shared Memory Initiali=
> zed.
>
> 09:35:29 Started 1 B-tree scanners.
> 09:35:29 B-tree scanner threshold set at 5000.
> 09:35:29 B-tree scanner range scan size set to -1.
> 09:35:29 B-tree scanner ALICE mode set to 6.
> 09:35:29 B-tree scanner index compression level set to med.
> 09:35:29 Physical Recovery Started at Page (8:23219).
> 09:35:29 Physical Recovery Complete: 0 Pages Examined, 0 Pages Restored.
> 09:35:30 Logical Recovery Started.
> 09:35:30 12 recovery worker threads will be started.
> 09:35:30 Logical Recovery has reached the transaction cleanup phase.
> 09:35:30 Logical Recovery Complete.
>
> 0 Committed, 0 Rolled Back, 0 Open, 0 Bad Locks
>
> 09:35:32 Onconfig parameter LOGFILES modified from 4 to 20.
> 09:35:32 Dataskip is now OFF for all dbspaces
> 09:35:33 Checkpoint Completed: duration was 1 seconds.
> 09:35:33 Fri May 30 - loguniq 201, logpos 0x4dac0c0, timestamp: 0x73c6b4c =
> Interval: 685
>
> 09:35:33 Maximum server connections 0
> 09:35:33 Checkpoint Statistics - Avg. Txn Block Time 0.000, # Txns blocked=
> 0, Plog used 3, Llog used 1
>
> 09:35:33 On-Line Mode
> 09:35:34 SCHAPI: Started dbScheduler thread.
> 09:35:36 Booting Language <spl> from module <>
> 09:35:36 Loading Module <SPLNULL>
> 09:35:36 Auto Registration is synced
> 09:35:36 SCHAPI: Started 2 dbWorker threads.
> 09:35:37 Defragmenter cleaner thread now running
> 09:35:37 Defragmenter cleaner thread cleaned:0 partitions
>
> Sorry for the delay in my answer, but I am investigating this issue in my =
> free time.
>
> Thanks in advance!
>
> --
> Javier Perez Arenal - jperez@uniovi.es
> Jefe del Area T=E9cnica de Inform=E1tica y Comunicaciones=20
> Vicerrectorado de Campus, Inform=E1tica e Infraestructuras
> Universidad de Oviedo=20
> Edificio Severo Ochoa=20
> C/ Fernando Bongera s/n, Campus del Cristo
> 33006 - Oviedo, Asturias
>
> -----Mensaje original-----
> De: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] En nombre de JON
> RIT=
> SON
> Enviado el: mi=E9rcoles, 28 de mayo de 2014 18:01
> Para: ids@iiug.org
> Asunto: Re: RE: Poor performance on VMWare [33118]
>
> Hi Javier,=20
>
> Very interesting (and topical) topic.=20
>
> Interesting to note SRVR1 is on RH 5.3 and SRVR2 is on (virtual) RH 6.3=20
>
> >From onstat -g ath, do you see "kaio" in both servers?=20
>
> When you start up the engine, there should be quite a few messages
> reported=
> up to "On-line mode" ... can you post them?=20
>
> JJ=20
>
>
> ***************************************************************************=
> ****
> Forum Note: Use "Reply" to post a response in the discussion forum.=20
>
>
>
> *******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>

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