Does iozone use mmap() for IO?
Olga
On Tue, Mar 9, 2010 at 2:57 AM, Matt Cowger wrote:
> Hi Everyone,
>
>
>
> It looks like I’ve got something weird going with zfs performance on a
> ramdisk….ZFS is performing not even a 3rd of what UFS is doing.
>
>
>
> Short version:
>
>
>
> Create 80+ GB ramd
tmpfs lacks features like quota and NFSv4 ACL support. May not be the
best choice if such features are required.
Olga
On Tue, Mar 9, 2010 at 3:31 AM, Bill Sommerfeld wrote:
> On 03/08/10 17:57, Matt Cowger wrote:
>>
>> Change zfs options to turn off checksumming (don't want it or need it),
>> at
Which IO library do you use? If you use stdio you could use the libast
stdio implementation which allows to set the block size via
environment variables.
Olga
On Tue, Mar 9, 2010 at 7:55 PM, Matt Cowger wrote:
> That's a very good point - in this particular case, there is no option to
> change t
Could you retest it with mmap() used?
Olga
2010/3/9 Matt Cowger :
> It can, but doesn't in the command line shown below.
>
> M
>
>
>
> On Mar 8, 2010, at 6:04 PM, "ольга крыжановская" anov...@gmail.com> wrote:
>
>> Does iozone use mmap() for IO?
Are there plans to reduce the memory usage of ZFS in the near future?
Olga
2010/4/2 Alan Coopersmith :
> ольга крыжановская wrote:
>> Does Opensolaris have an option to install without ZFS, i.e. use UFS
>> for root like SXCE did?
>
> No. beadm & pkg image-update rely
brtfs could be supported on Opensolaris, too. IMO it could even
complement ZFS and spawn some concurrent development between both. ZFS
is too high end and works very poorly with less than 2GB while brtfs
reportedly works well with 128MB on ARM.
Olga
On Wed, Apr 14, 2010 at 5:31 PM, wrote:
>
>
>
Can I use getconf to test if a ZFS file system is mounted in case
insensitive mode?
Olga
--
, __ ,
{ \/`o;-Olga Kryzhanovska -;o`\/ }
.'-/`-/ olga.kryzhanov...@gmail.com \-`\-'.
`'-..-| / Solaris/BSD//C/C++ progra
I would like to see brtfs under a BSD license that
FreeBSD/OpenBSD/NetBSD can adopt it, too.
Olga
2010/4/14 :
>
>>brtfs could be supported on Opensolaris, too. IMO it could even
>>complement ZFS and spawn some concurrent development between both. ZFS
>>is too high end and works very poorly with
There is no way in the SUS standard to determinate if a file system is
case insensitive, i.e. with pathconf?
Olga
On Wed, Apr 14, 2010 at 7:48 PM, Glenn Fowler wrote:
>
> On Wed, 14 Apr 2010 17:54:02 +0200 =?KOI8-R?B?z8zYx8Egy9LZ1sHOz9fTy8HR?=
> wrote:
>> Can I use getconf to test if a ZFS file
dagogikk er det essensielt at pensum presenteres intelligibelt. Det
> er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av
> idiomer med fremmed opprinnelse. I de fleste tilfeller eksisterer adekvate og
> relevante synonymer på norsk.
>
> - "ольг
/usr/bin/getconf _PC_CASE_BEHAVIOR /tmp
getconf: Invalid argument (_PC_CASE_BEHAVIOR)
I'm sure this is a bug, right?
Olga
On Thu, Apr 15, 2010 at 9:52 PM, Tim Haley wrote:
> On 04/14/10 11:48 AM, Glenn Fowler wrote:
>>
>> On Wed, 14 Apr 2010 17:54:02 +0200 =?KOI8-R?B?z8zYx8Egy9LZ1sHOz9fTy8HR?=
Tim, did ZFS or CIFS add other pathconf() values which need to be
implemented in getconf or ksh93?
Olga
2010/4/15 ольга крыжановская :
> /usr/bin/getconf _PC_CASE_BEHAVIOR /tmp
> getconf: Invalid argument (_PC_CASE_BEHAVIOR)
>
> I'm sure this is a bug, right?
>
> Olga
>
Try in /usr/bin/ksh93:
builtin cp
and benchmark that.
Olga
On Sat, Jun 26, 2010 at 5:18 PM, Oliver Seidel wrote:
> Hello,
>
> I came across this blog post:
>
> http://kevinclosson.wordpress.com/2007/03/15/copying-files-on-solaris-slow-or-fast-its-your-choice/
>
> and would like to hear from you
How can I test if a file on ZFS has holes, i.e. is a sparse file,
using the C api?
Olga
--
, _ _ ,
{ \/`o;- Olga Kryzhanovska -;o`\/ }
.'-/`-/ olga.kryzhanov...@gmail.com \-`\-'.
`'-..-| / http://twitter.com/fleyt
Mike, I was hoping that some one has a complete example for a bool
has_file_one_or_more_holes(const char *path) function.
Olga
2012/3/26 Mike Gerdts :
> 2012/3/26 ольга крыжановская :
>> How can I test if a file on ZFS has holes, i.e. is a sparse file,
>> using the C api?
>
Can some one here explain why accessing a NFSv4/ZFS xattr directory
through proc is forbidden?
To explain the problem in shell code (cd -@ is a new option to enter
the XATTR store, redirect {n}<... opens a file or directory and
assigns the fd number to variable 'n'):
ksh -c 'touch x ; cd -@ x ; re
quot; ; cd .. ;
print "hello1" >"/proc/$$/fd/$n/myxattr1" ;
(cd -@ x1 ; cat "myxattr1" ) ;
rm x1
stop cutting here ----
Olga
On Fri, Jul 13, 2012 at 9:17 PM, Gordon Ross wrote:
> On Fri, Jul 13, 2012 at 2:16 AM, ольга крыжановская
>
some thing impossible).
Olga
On Sat, Jul 14, 2012 at 2:33 AM, Cindy Swearingen
wrote:
> I don't think that xattrs were ever intended or designed
> for /proc content.
>
> I could file an RFE for you if you wish.
>
> Thanks,
>
> Cindy
>
>
> On 07/13/12 14:00, ол
Will this work with Linux rquota clients, too?
Olga
On 4/1/09, Matthew Ahrens wrote:
> Mike Gerdts wrote:
>
> > On Tue, Mar 31, 2009 at 7:12 PM, Matthew Ahrens
> wrote:
> >
> > > River Tarnell wrote:
> > >
> > > > Matthew Ahrens:
> > > >
> > > > > ZFS user quotas (like other zfs properties) wil
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