similar to: This old tune again : read performance optimisations

Hai, Ok, so you have 3 the same machines and only one is slow. Thats important info. Did anything special happen with this server. For example 2 servers got a new install and this one had an upgrade (or sort of upgrade) from the "old" server? Or you configured the new server in an other (ad site) and moved it to the new location. In tring to figure out, where what happend, so we

Hi everyone, here's my problem: I have a fast server (dual Xeon E5-2620, 64 GB RAM) with a fast RAID array (24 disks, RAID-6, more than 2GB/s read/write local performance, XFS filesystem) and fast network : dual 10GigE (myri10g) and 40GigE (i40e). It's running Debian 8.11, tried various kernel versions (currently 4.4.x, but 4.9 isn't any better). It's slow as dead snails in

Hi, I need to to open existing readonly files. Yes you are right, not the open call takes the time, but stat() system call. I looked at aio_pthread source, the lines which needs to be removed to make it work are just the lines which tests for O_CREAT|O_EXCL? What problems can cause such solution for readonly share? On Tue, Apr 26, 2016 at 8:42 PM, Jeremy Allison <jra at samba.org> wrote:

I'm trying to learn more about samba by experimenting with samba on FreeNAS. This involves a certain amount of reading how default smb4.conf parameters are set in FreeNAS and then reading the manpages for those parameters. Async I/O is implemented in samba in freenas via the aio_pthread VFS module. The manpage for vfs_aio_pthread states: "the smb.conf parameters aio read size and aio

In the vfs pages for aio_pthread, it gives as an example for aio read/write size, 1024 for each and states an "appropriate" value must be set. Byt in smb.conf it states that the only reasonable values are 0 or 1 (also that there's a default = 1 so no value need be given explicitly). Which of these is correct? Thanks, Stilez

Hello list, I am looking to enable samba aio on my Wheezy test box (I have version 4.1.17 from back ports). The output of smbd -b shows that the stable packages for my distro are not compiled using --with-aio-support. It appears that without recompiling I can use vfs objects = aio_pthread to achieve a similar effect? I'm aware that this somewhat dips into Debian specifics, but I figured

On 2/17/2016 5:00 AM, Rowland penny wrote: > On 17/02/16 00:03, Ian wrote: >> I've recently attempted to migrate some windows server files over to >> samba 4 hosted on a FreeNAS server. >> >> Using robocopy with the /copyall switch, I expected everything, >> including ACL's and ownership information to transfer over. For the >> most part they have.

On Tue, Jul 19, 2016 at 12:42:53PM -0700, Jeremy Allison wrote: > On Tue, Jul 19, 2016 at 12:49:09PM -0500, Russell R Poyner wrote: > > I'm tuning a samba 4.3 install on freebsd and I'm confused about aio > > settings. > > > > I've loaded the freebsd aio kernel module and tried various values > > or aio read size and aio write size, but it seems to

On a related note: Some time ago, you instructed a user to use the following aio_pthread parameter:     aio_pthread:aio open = true This is not undocumented in the man page. Does the parameter have any effect, and what is the effect? Although I tried for a while, I couldn't locate your original message. I don't remember whether it was posted on bugzilla or on a mailing list, but I

On Tue, Sep 06, 2016 at 10:58:01PM +0200, Daniel Vogelbacher via samba wrote: > On 06.09.2016 20:15, Jeremy Allison via samba wrote: > > On Tue, Sep 06, 2016 at 08:06:48PM +0200, Volker Lendecke via samba wrote: > >> On Tue, Sep 06, 2016 at 07:58:27PM +0200, Daniel Vogelbacher via samba wrote: > >>> I don't have these options in my smb.conf. > >>> Do

Le Thu, 10 Aug 2017 18:46:12 +0100 Rowland Penny via samba <samba at lists.samba.org> écrivait: > 4.2.x is EOL as far as Samba is concerned, there have been a lot of > changes since 4.2.* came out. > > Can I suggest you go here: http://apt.van-belle.nl/ > > You can get a much more recent version there, 4.6.7 OK I'll try it, but that doesn't really explain why

Hi, I have problem with my samba. I have shared folder which contains many smaller files (few MB each), this files are stored on very fast disk array. Locally, from that machine I can read this files in parallel with speed about 500-1000 MB/s, but when I read them through samba, I get only 50-100 MB/s on a 10 gigabit network. I tried to find the problem, so I analyzed strace logs and found out,

Do you MC support? Cheers, Rafael On Feb 9, 2016 1:12 PM, "Jacques Pienaar via llvm-dev" < llvm-dev at lists.llvm.org> wrote: > > > On Tue, Feb 9, 2016 at 10:05 AM, Chandler Carruth <chandlerc at google.com> > wrote: > >> On Tue, Feb 9, 2016 at 9:58 AM Hal Finkel via llvm-dev < >> llvm-dev at lists.llvm.org> wrote: >> >>>

I've recently attempted to migrate some windows server files over to samba 4 hosted on a FreeNAS server. Using robocopy with the /copyall switch, I expected everything, including ACL's and ownership information to transfer over. For the most part they have. The one problem I've ran into however, is that I'm getting errors any time I or robocopy attempt to change the ownership to

Hello list, I setup Iometer to test AIO for 100% random read. If "Transfer Request Size" is more than or equal to 256 kilobytes,in the beginning the transmission is good. But 3~5 seconds later,the throughput will drop to zero. Server OS: Ubuntu Server 14.04.1 LTS Samba: Version 4.1.6-Ubuntu Dialect: SMB 2.0 AIO settings : aio read size = 1 aio write size = 1 vfs objects =

Is there a document with some guidelines for setting up bricks with tcp or rdma transport? I'm looking at a new deployment where the storage cluster hosts connect via 10GigE, but clients are on 1GigE. Over time, there will be 10GigE clients, but the majority will remain on 1GigE. In this setup, should the storage bricks use tcp or rdma? If tcp is the better choice, and at some point in the

On Thu, Jul 21, 2016 at 12:23:01PM -0500, Russell R Poyner wrote: > One more data point for comparison > > I installed the stock samba 4.2 rpm on a centos 7 machine and ran > the same diskspd tests against a share configured with: > vfs objects = aio_pthread > aio read size = 1024 > aio read size = 1024 > > smb2 leases = yes > > I get 27MB/s with 4k

Am 21.07.2016 um 20:56 schrieb Russell R Poyner: > Jeremy, > > I think this is exactly a complex interaction between FreeBSD and > Samba. Best guess would be some system call that is fast in linux but > slow in FreeBSD holding things back. > > Russ > > On 07/21/2016 01:00 PM, Jeremy Allison wrote: >> On Thu, Jul 21, 2016 at 12:23:01PM -0500, Russell R Poyner

Dear all, After 4 days of sleepless nights, I have manged to rebuild the samba farm. I believe the following discovery might interest our samba community. ------------------------------------------------ System setting: I have deployed samba 4.1.0 system for my working organisation. It comprised of 2 DCs and 1 member server. 2 DCs maintains AD for login and the member server host files for

On Tue, Sep 06, 2016 at 11:53:04PM +0200, Daniel Vogelbacher via samba wrote: > > Delete all the crap above first :-). > > > > Then start trying to copy locally to the tmpfs share to see what > > the max local copy speed it. > > > > Now I have: > > server multi channel support = yes > vfs objects = aio_pthread,recycle > aio read size = 1 > aio