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IDS Forum

RE: Poor performance on VMWare

Posted By: JAVIER PEREZ ARENAL
Date: Wednesday, 28 May 2014, at 11:04 a.m.

In Response To: RE: Poor performance on VMWare (Alexandre Marini)

Thanks Alexandre!

I will follow your advices, but IMHO I do not expect any significative per=
formance improvements. The IDS version is the same in the two servers and i=
n both I use cooked files, therefore, I supose that if I move the dbspaces =
to raw devices in both servers, the improvements will be equivalent too.

Again, thanks for your help.

Best regards.

--
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 Alexand=
re Marini
Enviado el: lunes, 26 de mayo de 2014 16:26
Para: ids@iiug.org
Asunto: RE: Poor performance on VMWare [33100]

Hello, Javier.=20
My personal opinion is that you might have a better performance, but you sh=
ould not use the same onconfig file.=20

1) Are you really using cooked files? If so, please forget them. Change you=
r chunks to raw devices, and make sure you are not using a bad RAID level i=
n your storage.=20

2) You could start a performance tunning process after topic 1 is solved.=20
Informix 12 have several features that might benefit your performance, even=
in VMs environments. Eg: are you using cpu vp memory caches? Are you using=
RTO policies? Are you using alice index cleaner mode (OLTP system)?=20

3) You might also check other topics, but as a start phase, I=B4d go for al=
l of mentioned ones first.=20

Hope it helps.=20
Regards.=20

Alexandre Marini
IBM Informix Certified Professional v10 / v11.50 / v11.70 / v12.10=20

IBM Information Management Informix Technical Professional=20

IBM Infosphere DataStage Technical Professional Informix Senior DBA - Orizo=
n Brasil BRIUG website administrator Informix independent consultant=20

> To: ids@iiug.org
> From: jperez@uniovi.es
> Subject: Poor performance on VMWare [33099]
> Date: Mon, 26 May 2014 09:44:07 -0400
>=20
> Hello
>=20
> I want to know some expert opinion about one IDS 12.10.FC3WE test that=20
> I ha=3D ve currently executing in two machines. This machines are:
>=20
> SRV1: (+7 years old) HP Proliant DL585 G1
> - 4xAMD Opteron 820 2.3GHz (2 cores x processor for a total of 8=20
> cores)
> - 16 GB RAM
> - Local HDD on 146GB Ultra320 SCSI
> - Informix storage: cooked files
> - Red Hat 5.9 x64
>=20
> SRV2: VMWare Virtual server
> - 8xvCPU (reported as AMD Opteron 6176 SE 2,3GHz)
> - 16 GB RAM
> - SAN (HP EVA6500) HDD on 2TB 7.2K EVA SAS MDL disk pool (Mapped RAW=20
> LUN)
> - SAN conectivity: 1Gbps iSCSI (server side) 10Gbps (SAN side)
> - Informix storage: cooked files
> - Red Hat 6.5 x64
>=20
> With these technical data, I am expected that the SRV2 results were=20
> better =3D than the SRV2 ones (and more knowing the SRV1 "age").
>=20
> When I ran some scripts, stored procedures (SPL) and update=20
> statistics, I w=3D as surprised by the results. The massive write=20
> operations were slightly bet=3D ter on SRV2 (import was 40% faster in=20
> SRV2), but the scripts envolving heav=3D y reading operations were about=
=20
> 1,5 times slow in the best cases, reaching =3D
> 2,5 times slow in the worse cases.=20
>=20
> In this unexpected scenario, I looked for an IDS independent=20
> benchmarking t=3D ool and I found a suite called "phoronix test suite"=20
> (PTS). I was decided t=3D o find the bottleneck in SRV2... but again the=
=20
> results of the PTS surprised=3D me. I ran various test, with the followin=
g results:
>=20
> - pts/SmallPT (CPU test. Less is better) > SRV1: 192 > SRV2: 141=20
> (better)
> - pts/Apache (CPU test. More is better) > SRV1: 7017.65 > SRV2:=20
> 9547.57 (be=3D
> tter)
> - pts/aio-stress (I/O test. Random Write. More is better) > SRV1:=20
> 22.06 > S=3D
> RV2: 881.51 (better)
> - pts/iozone (I/O test. Read Performance: 1MB record / 2GB file. More=20
> is be=3D
> tter) > SRV1: 728.09 > SRV2: 2008.14 (better)
> - pts/iozone (I/O test. Read Performance: 1MB record / 4GB file. More=20
> is be=3D
> tter) > SRV1: 824.98 > SRV2: 1985.23 (better)
> - pts/iozone (I/O test. Read Performance: 1MB record / 8GB file. More=20
> is be=3D
> tter) > SRV1: 768.30 > SRV2: 1906.90(better)
> - pts/iozone (I/O test. Read Performance: 4KB record / 2GB file. More=20
> is be=3D
> tter) > SRV1: 1016.75 > SRV2: 2113.92 (better)
> - pts/iozone (I/O test. Read Performance: 4KB record / 4GB file. More=20
> is be=3D
> tter) > SRV1: 1071.86 > SRV2: 1953.93 (better)
> - pts/iozone (I/O test. Read Performance: 4KB record / 8GB file. More=20
> is be=3D
> tter) > SRV1: 1086.07 > SRV2: 1794.42 (better)
> - pts/iozone (I/O test. Write Performance: 1MB record / 2GB file. More=20
> is b=3D
> etter) > SRV1: 25.38 > SRV2: 97.64 (better)
> - pts/iozone (I/O test. Write Performance: 1MB record / 4GB file. More=20
> is b=3D
> etter) > SRV1: 26.28 > SRV2: 114.04 (better)
> - pts/iozone (I/O test. Write Performance: 1MB record / 8GB file. More=20
> is b=3D
> etter) > SRV1: 28.36 > SRV2: 144.49 (better)
> - pts/iozone (I/O test. Write Performance: 4KB record / 2GB file. More=20
> is b=3D
> etter) > SRV1: 26.17 > SRV2: 91.99 (better)
> - pts/iozone (I/O test. Write Performance: 4KB record / 4GB file. More=20
> is b=3D
> etter) > SRV1: 26.35 > SRV2: 108.19 (better)
> - pts/iozone (I/O test. Write Performance: 4KB record / 8GB file. More=20
> is b=3D
> etter) > SRV1: 28.62 > SRV2: 144.37 (better)
> - pts/ramspeed (RAM test. Add integer. More is better) > SRV1: 3533.75=20
> > SR=3D
> V2: 6782.31 (better)
> - pts/ramspeed (RAM test. Copy integer. More is better) > SRV1:=20
> 3418.95 > S=3D
> RV2: 6782.31 (better)
> - pts/ramspeed (RAM test. Scale integer. More is better) > SRV1:=20
> 3448.33 > =3D
> SRV2: 6776.20 (better)
> - pts/ramspeed (RAM test. Triad integer. More is better) > SRV1:=20
> 3499.36 > =3D
> SRV2: 6536.23 (better)
> - pts/ramspeed (RAM test. Average integer. More is better) > SRV1:=20
> 3453.82 =3D
> > SRV2: 6851.13 (better)
> - pts/ramspeed (RAM test. Add floating point. More is better) > SRV1:=20
> 3955.=3D
> 16 > SRV2: 7241.65 (better)
> - pts/ramspeed (RAM test. Copy floating point. More is better) > SRV1:=20
> 3599=3D
> ..66 > SRV2: 7178.45 (better)
> - pts/ramspeed (RAM test. Scale floating point. More is better) >=20
> SRV1: 339=3D
> 9.08 > SRV2: 7286.11 (better)
> - pts/ramspeed (RAM test. Triad floating point. More is better) >=20
> SRV1: 385=3D
> 5.18 > SRV2: 7461.69 (better)
> - pts/ramspeed (RAM test. Average floating point. More is better) >=20
> SRV1: 3=3D
> 647.64 > SRV2: 7351.95 (better)
>=20
> In these test, SRV2 outperforms SRV1 in a clear and consistent way in=20
> any o=3D f the evaluated fields (Processor, I/O and Memory). But the IDS=
=20
> 12.10.FC3WE=3D still runs slowly in SRV2 when I execute massive read=20
> operations (by examp=3D le, update statistics over my test db is 136%=20
> more slow than the same opera=3D tion on SRV1). The IDS config is=20
> exactly the same in the two servers (oncon=3D fig copied from one to othe=
r).
>=20
> One thing I observed is that the SRV2's virtual processors shows more=20
> activ=3D ity than the SRV1's ones when I execute any IDS operation. Also=
=20
> is the same=3D thing with the "top" utility in the operating system=20
> command line. This is=3D a "contradiction?" with the SRV2's better PTS CP=
U tests .
>=20
> I do not identify or suspect any possible reason who explain the poor=20
> SRV2 =3D performance... any ideas?
>=20
> Thanks in advance and excuse me if the english is not quite good...=20
> :-(
>=20
> --
> Javier Perez Arenal - jperez@uniovi.es<mailto:jperez@uniovi.es>
> Jefe del Area T=3DE9cnica de Inform=3DE1tica y Comunicaciones=20
> Vicerrectorado de Campus, Inform=3DE1tica e Infraestructuras Universidad=
=20
> de Oviedo Edificio Severo Ochoa C/ Fernando Bongera s/n, Campus del=20
> Cristo
> 33006 - Oviedo, Asturias
>=20
> --Boundary_(ID_B1ApZu83LpmDOByskPtisQ)
>=20
>=20
>=20
***************************************************************************=
****=20
> Forum Note: Use "Reply" to post a response in the discussion forum.=20
>=20

***************************************************************************=
****
Forum Note: Use "Reply" to post a response in the discussion forum.=20

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