similar to: Problem with AIO random read

Hello Volker, Thanks for kindly feedback :) > When the system is stalled, how many threads does the smbd >have active? /proc/pid/tasks will tell you. At the beginning ... pidstat -t|grep smbd 11:41:16 AM 0 5388 - 0.00 0.00 0.00 0.00 1 smbd 11:41:16 AM 0 - 5388 0.00 0.00 0.00 0.00 1 |__smbd 11:41:16 AM 0 5390

On Wed, Dec 03, 2014 at 03:45:24AM -0800, mikeliu wrote: > 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: >

Hi forks: I've been testing SMB2 with samba 3.6.4 performance these days, and I find a weird benchmark that SMB2 write performance is slower than SMB1 in 10Gb ethernet network. Server ----------------------- Linux: Redhat Enterprise 6.1 x64 Kernel: 2.6.31 x86_64 Samba: 3.6.4 (almost using the default configuration) Network: Chelsio T4 T420-SO-CR 10GbE network adapter RAID: Adaptec 51645 RAID

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

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, 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 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

Meanwhile it appears to contradict. Is there any reason not to update the vfs doc to reflect the old situation pre-bugfix and the current suggested values? On 8 March 2018 9:28:30 pm Jeremy Allison <jra at samba.org> wrote: > On Thu, Mar 08, 2018 at 09:00:48PM +0000, Stilez via samba wrote: >> In the vfs pages for aio_pthread, it gives as an example for aio read/write >>

Hi All, I have a recvfile patch for samba4.1. This patch is working with linux client, But if am trying this with windows client am getting following error in my server. " Unexpected RPC Fragment size! (0)" In client side am getting "Remote procedure call failed and did not execute" And the samba share not mounted. So far i tried regedit with Lanman workstation

We are seeing the SMBD process sitting at 99.9% Are there any step-by-step troubleshooting guides to track the source of the problem? -Jeremy

On Thu, 08 Nov 2018 22:08:51 +1300 Andrew Bartlett <abartlet at samba.org> wrote: > On Thu, 2018-11-08 at 08:48 +0000, Rowland Penny via samba wrote: > >  > > Yes, but it isn't doing a read, it is trying to do a write and then > > being cancelled. > > Rowland, > > Can you point us as the evidence that leads you to that conclusion?  OK, the OP posted

On Fri, 09 Nov 2018 07:40:23 +1300 Andrew Bartlett <abartlet at samba.org> wrote: > On Thu, 2018-11-08 at 09:29 +0000, Rowland Penny wrote: > > On Thu, 08 Nov 2018 22:08:51 +1300 > > Andrew Bartlett <abartlet at samba.org> wrote: > > > > > On Thu, 2018-11-08 at 08:48 +0000, Rowland Penny via samba wrote: > > > > > > > > Yes, but

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 make no difference in the speed. Using MS diskspd against a samba share from a fast zfs pool I get something like 25MB/s tops. That's well below the capacity of my Gb network and

I have noticed that many games (Farcry 2, Fallout 3, Fallout: New Vegas, Drakensang) crash with some form of out of memory messages. So obviously something is leaking memory (whether it is wine or the game or drivers, I cannot say). But it always happens as soon as wine uses ~1.5 GB of RAM. Also I wonder if it has something to do with this bug: http://bugs.winehq.org/show_bug.cgi?id=25428 I ran

I'm seeing some really poor performance out of my FreeNAS (ver 9.10) machine, running Samba "4.3.6-GIT-UNKNOWN". I'm using IOMeter to benchmark sequential reads, and getting around 35-40 MB/sec, which seems unusual. Mostly, I'm hoping someone can point me in the direction of a decent tuning guide for a SOHO machine running Samba, but if you're inclined, I'll delve

On a 32bit Windows 2008 Server guest VM on a CentOS 5 host, iometer reported a disk write speed of 37MB/s The same VM on a CentOS 6 host reported 0.3MB/s. i.e. The VM was unusable. Write performance in a CentOS 6 VM was also much worse, but it was usable. (See http://lists.centos.org/pipermail/centos-virt/2012-August/002961.html) With iometer still running in the guest, I installed tuned on

Hi, Has kernel-2.6.18-128.1.1 support for IO statistic for example when using "pidstat -d"? Thanks in advance! -- -- Open Kairos http://www.openkairos.com Watch More TV http://sebelk.blogspot.com Sergio Belkin -

Am 07.11.18 um 09:54 schrieb Rowland Penny via samba: > On Wed, 7 Nov 2018 05:45:45 +0300 > Albert Berger via samba <samba at lists.samba.org> wrote: > >> I'm running a Samba server on Raspbian and observing that Samba >> during idle periods is constantly (every minute) writing to HDD >> (maybe doing some journaling?) what causes the HDD to constantly spin

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: