Hi, Jeff! Something for you to reply to ... :-)
Volker On Thu, Aug 04, 2011 at 02:11:35PM -0400, vg_ us wrote: > -------------------------------------------------- > From: "Volker Lendecke" <volker.lende...@sernet.de> > Sent: Thursday, August 04, 2011 11:01 AM > To: "vg_ us" <vg...@hotmail.com> > Cc: <samba@lists.samba.org> > Subject: Re: [Samba] Very slow samba performance on Centos 6 > > >On Thu, Aug 04, 2011 at 10:49:50AM -0400, vg_ us wrote: > >>I have 2 identical Dell r510 servers with 10gig card, running centos > >>6 with samba-3.5.4-68.el6_0.2.x86_64. > >>I setup 16G ramdisk samba share on both and ran cp from local > >>ramdisk to samba ramdisk mount. > >>If I cp 12 1-gig files, I get combined 100MB/s transfer rate. Single > >>file cp maxes out at about 15MB/s. > >>Ftp transfer give me over 300MB/s. > >> > >>Running with 9000 MTU. Most smb.conf is default. I even disabled > >>atime and tried ext2 and xfs on ramdisk. > >> > >>Any help will be greatly appreciated. > > > >What client application are you using? If it is a cifsfs > >kernel mount, you might see such artifacts. Please retry > >with the smbclient(1) application. If that is also slow, we > >need to investigate further. > > > > I re-ran some of the tests with following result: > > Ftp ramdisk-to-ramdisk: > 13572 MB, 32.8 secs - 413.8 MB/s > > Ftp ramdisk-to-hardisk: > 13572 MB, 62.8 secs - 222.4 MB/s > > Smbclient ramdisk-to-ramdisk: > 13572 MB 40 secs - 339 MB/s > > Smbclient ramdisk-to-harddisk: > 13572 MB 64 secs - 212 MB/s > > cifsfs mount ramdisk-to-ramdisk: > 13572 MB 289.8 - 47MB/s > > cifsfs mounts are really slow, so what happens when linux, windows > and mac clients map/mount the share? Are they gonna be this slow? > Any way to speed it up? > > Thanks > > - Vadim > -- SerNet GmbH, Bahnhofsallee 1b, 37081 Göttingen phone: +49-551-370000-0, fax: +49-551-370000-9 AG Göttingen, HRB 2816, GF: Dr. Johannes Loxen -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
