similar to: does dovecot support aio(asynchronous IO)

when installing samba from FreeBSD ports collection, I can choose AIO support, which leads to ... checking whether to support asynchronous io... yes checking for aio_read in -lrt... no checking for asynchronous io support... no checking for 64-bit asynchronous io support... no does it mean aio was not enabled ? Cheers, Ilia Chipitsine

The long term plan is to get all of Dovecot disk I/O asynchronous. The first step to that direction would be to make dbox/mdbox I/O asynchronous. This might also allow mbox/maildir to become partially asynchronous. http://www.dovecot.org/list/dovecot/2009-December/045481.html already started describing how the lib-storage API could be changed to support high-latency storages. Adding support for

Hi, I have installed Xen on Linux 2.6.11.10 <http://2.6.11.10> and i am trying to do Asynchronous Direct IO on SAS drives. The application which does the asynchronous direct io on SAS drive is running on Domain 0. Actually the IOPs what i get for a 512Bytes IO size is 67, but if i do the same operation on Linux 2.6.11.10 <http://2.6.11.10> native kernel, i get 267 IOPs.Cananyone

hi, i just have some questions about specific (uncommon) compile options and aio-settings in smb.conf: Asynchronous IO Support ======================= "Experimental support for async IO has been added to smbd for certain platforms. To enable this new feature, Samba must be compiled to include the --with-aio-support configure option. In addition, the "aio read size" and

Hello, Is there any straightforward way to see whether Samba is using "asynchronous i/o"? In other words, if you specify in smb.conf to use aio for all transfers larger than 1 KB (pretty much everything), how can you tell that aio is actually being used? Are there any counters in Linux or in some samba logs that you can see incrementing over time? Thanks in advance. -- Andy

hi, i'm trying to get the asynchronous file transfer to work on a FC4 for the latest samba verion (3.0.20b). The things i've done: ./configure --with-aio-support ... included "aio read size = 1" and "aio write size = 1" in the smb.conf file What did i forget?? michiel ========================= uname -a Linux wired11 2.6.12-1.1398_FC4 #1 Fri Jul 15 00:52:32 EDT

Hello, I installed Xen 3.2.1 on Debian Lenny from packages. Then created image files with 'xen-create-image --size=2Gb --swap=128Mb --dhcp --dir=/xen --hostname=test'. Now I'm trying to run Debian in PV mode using the following configuration file: kernel = "/boot/vmlinuz-2.6.26-1-xen-686" ramdisk = "/boot/initrd.img-2.6.26-1-xen-686" memory = 128 name =

I was thinking about [Bug 3099]... in that while it's easy to get a 2-3x speed for the average app using parallel scans, the upper and lower bounds on that speed increase could be <1x in a worst case (very unlikely, but with primitive or constrained (in a container or VM) HW, the chances are raised. Better, with less std. deviation, I believe, might be to move I/O calls to all being AIO

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =============================================================== It may just be a storm in a teacup, but to the ant in the teacup it certainly feels like a typhoon. -- anonymous ===============================================================

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =============================================================== It may just be a storm in a teacup, but to the ant in the teacup it certainly feels like a typhoon. -- anonymous ===============================================================

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ============================================================== Sometimes you have to be someone else in order to be yourself. -- Michael Samuel Finn ============================================================== Release Announcements ===================== This is a

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 blocks and 145MB/s with 64k blocks. Disabling cacheing by passing the -h switch to diskspd lowered these to 72MB/s

=================================================================== "I'm very serious about no alcohol, no drugs. Life is too beautiful." Jim Carrey =================================================================== Release Announcements ===================== This is the latest bugfix release of the Samba 3.3 series. Major enhancements in Samba 3.3.11 include:

=================================================================== "I'm very serious about no alcohol, no drugs. Life is too beautiful." Jim Carrey =================================================================== Release Announcements ===================== This is the latest bugfix release of the Samba 3.3 series. Major enhancements in Samba 3.3.11 include:

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

[RFC] Virtual Machine Device Queues (VMDq) support on KVM Network adapter with VMDq technology presents multiple pairs of tx/rx queues, and renders network L2 sorting mechanism based on MAC addresses and VLAN tags for each tx/rx queue pair. Here we present a generic framework, in which network traffic to/from a tx/rx queue pair can be directed from/to a KVM guest without any software copy.

[RFC] Virtual Machine Device Queues (VMDq) support on KVM Network adapter with VMDq technology presents multiple pairs of tx/rx queues, and renders network L2 sorting mechanism based on MAC addresses and VLAN tags for each tx/rx queue pair. Here we present a generic framework, in which network traffic to/from a tx/rx queue pair can be directed from/to a KVM guest without any software copy.

================================================================= "I have not failed. I've just found 10,000 ways that won't work." Thomas A. Edison ================================================================= Release Announcements ===================== This is the latest stable release of Samba 3.4. Major enhancements in Samba 3.4.6 include: o "wide

================================================================= "I have not failed. I've just found 10,000 ways that won't work." Thomas A. Edison ================================================================= Release Announcements ===================== This is the latest stable release of Samba 3.4. Major enhancements in Samba 3.4.6 include: o "wide

Can anyone explain to me why tap:aio sucks so badly? We''ve got numerous CentOS 5 dom0s running file-backed domUs with tap:aio. The moment any one of them starts doing something disk-intensive, idle CPU in dom0 decreases, iowait increases, and disk IO for every other domU on the system suffers. Where lies the problem, and what to do about it? Sincerely, Ray Barnes