This is a multipart message in MIME format. ------=_NextPart_000_008F_01D0CD87.00D962B0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable With zfs you can use sync=3Ddisabled to enable async on the storage side = as well just fyi. =20 On one of ours we have 18 x 2tb drives across 6 x 3-way-mirrors with 3 = intel 7310 ssds 3 way mirrored for zil =20 With about 100 vm=E2=80=99s running I get roughly 1400 iops write and = 2230 read with about 600MBps read and 220 write running the tests from a = windows 2008 r2 vm. =20 From: Donny Davis [mailto:donny@cloudspin.me]=20 Sent: Sunday, August 02, 2015 05:49 PM To: Matthew Lagoe Cc: Alan Murrell; users Subject: Re: [ovirt-users] Poor guest write speeds =20 Thank you for reporting back. =20 I don't have to use async with my NFS share. Its not the same = comparison, but just for metrics I am running an =20 HP dl380 with 2x6cores and 24GB of ram, with 16 disks in raidz2 with 4 = vdevs. Backend is ZFS. Connections are 10GBE =20 I get great performance from my setup. =20 On Sat, Aug 1, 2015 at 9:00 PM, Matthew Lagoe = <matthew.lagoe@subrigo.net> wrote: You can run without async so long as your nfs server can handle sync = writes quickly -----Original Message----- From: users-bounces@ovirt.org [mailto:users-bounces@ovirt.org] On Behalf = Of Alan Murrell Sent: Saturday, August 01, 2015 05:37 PM To: users Subject: Re: [ovirt-users] Poor guest write speeds Hi Donny (and everyone else who uses NFS-backed storage) You mentioned that you get really good performance in oVirt and I am = curious what you use for your NFS options in exportfs? The 'async' option fixed my performance issues, but of course this would not be a recommended option in a production environment, at least unless the NFS server was running with a BBU on the RAID card. Just curious. Thanks! :-) -Alan _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users =20 --=20 Donny Davis ------=_NextPart_000_008F_01D0CD87.00D962B0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" = xmlns:o=3D"urn:schemas-microsoft-com:office:office" = xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" = xmlns=3D"http://www.w3.org/TR/REC-html40"><head><meta = http-equiv=3DContent-Type content=3D"text/html; charset=3Dutf-8"><meta = name=3DGenerator content=3D"Microsoft Word 14 (filtered = medium)"><style><!-- /* Font Definitions */ @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} @font-face {font-family:Tahoma; panose-1:2 11 6 4 3 5 4 4 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:12.0pt; font-family:"Times New Roman","serif";} a:link, span.MsoHyperlink {mso-style-priority:99; color:blue; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {mso-style-priority:99; color:purple; text-decoration:underline;} p.MsoAcetate, li.MsoAcetate, div.MsoAcetate {mso-style-priority:99; mso-style-link:"Balloon Text Char"; margin:0in; margin-bottom:.0001pt; font-size:8.0pt; font-family:"Tahoma","sans-serif";} span.EmailStyle17 {mso-style-type:personal-reply; font-family:"Calibri","sans-serif"; color:#1F497D;} span.BalloonTextChar {mso-style-name:"Balloon Text Char"; mso-style-priority:99; mso-style-link:"Balloon Text"; font-family:"Tahoma","sans-serif";} .MsoChpDefault {mso-style-type:export-only; font-family:"Calibri","sans-serif";} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;} div.WordSection1 {page:WordSection1;} --></style><!--[if gte mso 9]><xml> <o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext=3D"edit"> <o:idmap v:ext=3D"edit" data=3D"1" /> </o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue = vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span = style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497= D'>With zfs you can use sync=3Ddisabled to enable async on the storage = side as well just fyi.<o:p></o:p></span></p><p class=3DMsoNormal><span = style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497= D'><o:p> </o:p></span></p><p class=3DMsoNormal><span = style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497= D'>On one of ours we have 18 x 2tb drives across 6 x 3-way-mirrors with = 3 intel 7310 ssds 3 way mirrored for zil<o:p></o:p></span></p><p = class=3DMsoNormal><span = style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497= D'><o:p> </o:p></span></p><p class=3DMsoNormal><span = style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497= D'>With about 100 vm=E2=80=99s running I get roughly 1400 iops write and = 2230 read with about 600MBps read and 220 write running the tests from a = windows 2008 r2 vm.<o:p></o:p></span></p><p class=3DMsoNormal><span = style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497= D'><o:p> </o:p></span></p><p class=3DMsoNormal><b><span = style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>= </b><span style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> = Donny Davis [mailto:donny@cloudspin.me] <br><b>Sent:</b> Sunday, August = 02, 2015 05:49 PM<br><b>To:</b> Matthew Lagoe<br><b>Cc:</b> Alan = Murrell; users<br><b>Subject:</b> Re: [ovirt-users] Poor guest write = speeds<o:p></o:p></span></p><p = class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal>Thank = you for reporting back.<o:p></o:p></p><div><p = class=3DMsoNormal><o:p> </o:p></p></div><div><p class=3DMsoNormal>I = don't have to use async with my NFS share. Its not the same comparison, = but just for metrics I am running an<o:p></o:p></p></div><div><p = class=3DMsoNormal><o:p> </o:p></p></div><div><p = class=3DMsoNormal> HP dl380 with 2x6cores and 24GB of ram, with 16 = disks in raidz2 with 4 vdevs. Backend is ZFS. Connections are = 10GBE<o:p></o:p></p></div><div><p = class=3DMsoNormal><o:p> </o:p></p></div><div><p class=3DMsoNormal>I = get great performance from my setup.<o:p></o:p></p></div></div><div><p = class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal>On Sat, = Aug 1, 2015 at 9:00 PM, Matthew Lagoe <<a = href=3D"mailto:matthew.lagoe@subrigo.net" = target=3D"_blank">matthew.lagoe@subrigo.net</a>> = wrote:<o:p></o:p></p><p class=3DMsoNormal>You can run without async so = long as your nfs server can handle sync = writes<br>quickly<o:p></o:p></p><div><div><p class=3DMsoNormal = style=3D'margin-bottom:12.0pt'><br>-----Original Message-----<br>From: = <a href=3D"mailto:users-bounces@ovirt.org">users-bounces@ovirt.org</a> = [mailto:<a = href=3D"mailto:users-bounces@ovirt.org">users-bounces@ovirt.org</a>] On = Behalf Of<br>Alan Murrell<br>Sent: Saturday, August 01, 2015 05:37 = PM<br>To: users<br>Subject: Re: [ovirt-users] Poor guest write = speeds<br><br>Hi Donny (and everyone else who uses NFS-backed = storage)<br><br>You mentioned that you get really good performance in = oVirt and I am curious<br>what you use for your NFS options in = exportfs? The 'async'<br>option fixed my performance issues, but = of course this would not be a<br>recommended option in a production = environment, at least unless the NFS<br>server was running with a BBU on = the RAID card.<br><br>Just curious. Thanks! = :-)<br><br>-Alan<o:p></o:p></p></div></div><div><div><p = class=3DMsoNormal>_______________________________________________<br>User= s mailing list<br><a = href=3D"mailto:Users@ovirt.org">Users@ovirt.org</a><br><a = href=3D"http://lists.ovirt.org/mailman/listinfo/users" = target=3D"_blank">http://lists.ovirt.org/mailman/listinfo/users</a><br><b= r><br>_______________________________________________<br>Users mailing = list<br><a href=3D"mailto:Users@ovirt.org">Users@ovirt.org</a><br><a = href=3D"http://lists.ovirt.org/mailman/listinfo/users" = target=3D"_blank">http://lists.ovirt.org/mailman/listinfo/users</a><o:p><= /o:p></p></div></div></div><p class=3DMsoNormal><br><br = clear=3Dall><o:p></o:p></p><div><p = class=3DMsoNormal><o:p> </o:p></p></div><p class=3DMsoNormal>-- = <o:p></o:p></p><div><div><p class=3DMsoNormal = style=3D'margin-bottom:12.0pt'>Donny = Davis<o:p></o:p></p></div></div></div></div></body></html> ------=_NextPart_000_008F_01D0CD87.00D962B0--