Re: [CentOS] cachefs

2014-04-09 Thread Rita
Again,

thanks for the confirmation



On Thu, Apr 3, 2014 at 5:14 AM, Leon Fauster wrote:

> Am 03.04.2014 um 04:15 schrieb Grant Street :
>
> > On 03/04/14 12:34, Rita wrote:
> >> How come I don't see any changes in the Centos 6.{3,4,5} release which
> >> mention updates to cachefs?
> >
> > I don't know why they weren't in the release notesmaybe because it's
> > a preview release? They were issues in the Kernel. If you have a look at
> > the output of
> >
> > rpm -q kernel -changelog|less
> >
> > you can see a whole swag of changes in 2.6.32-405.el6
>
>
>
> i can confirm this - RHEL 6.5 is the way to go
>
> https://access.redhat.com/site/solutions/374553
>
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Re: [CentOS] cachefs

2014-04-03 Thread Leon Fauster
Am 03.04.2014 um 04:15 schrieb Grant Street :

> On 03/04/14 12:34, Rita wrote:
>> How come I don't see any changes in the Centos 6.{3,4,5} release which
>> mention updates to cachefs?
> 
> I don't know why they weren't in the release notesmaybe because it's 
> a preview release? They were issues in the Kernel. If you have a look at 
> the output of
> 
> rpm -q kernel -changelog|less
> 
> you can see a whole swag of changes in 2.6.32-405.el6



i can confirm this - RHEL 6.5 is the way to go 

https://access.redhat.com/site/solutions/374553

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[CentOS] cachefs efficiency

2014-04-02 Thread Grant Street
Hi

We are testing out the efficiency of cachefs and I was wondering what
values other people use to decide if
* cachefs is providing value?
* cache size is the right/best/optimal size?
* There is enough cache hits to make it worth while?
* what files are being re-used(read from cache) the most?
* how do I know if file are being opened with directIO ?

I have access to
   /proc/fs/fscache/stats
and
   /proc/fs/fscache/objects

But the documentation is not clear in fscache.txt

Thanks in advance.

Grant


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Re: [CentOS] cachefs

2014-04-02 Thread Grant Street
I don't know why they weren't in the release notesmaybe because it's 
a preview release? They were issues in the Kernel. If you have a look at 
the output of

rpm -q kernel -changelog|less

you can see a whole swag of changes in 2.6.32-405.el6


On 03/04/14 12:34, Rita wrote:
> thanks for your response.
>
> How come I don't see any changes in the Centos 6.{3,4,5} release which
> mention updates to cachefs?
>
>
>
> On Wed, Apr 2, 2014 at 7:22 PM, grants  wrote:
>
>> We are using CentOS 6.5 and it has been very stable.
>> we were hit with bugs in 6.2 6.3 and 6.4.
>>
>>
>>
>> --
>> View this message in context:
>> http://centos.1050465.n5.nabble.com/CentOS-cachefs-tp5724928p5725725.html
>> Sent from the CentOS mailing list archive at Nabble.com.
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>

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Re: [CentOS] cachefs

2014-04-02 Thread Rita
thanks for your response.

How come I don't see any changes in the Centos 6.{3,4,5} release which
mention updates to cachefs?



On Wed, Apr 2, 2014 at 7:22 PM, grants  wrote:

> We are using CentOS 6.5 and it has been very stable.
> we were hit with bugs in 6.2 6.3 and 6.4.
>
>
>
> --
> View this message in context:
> http://centos.1050465.n5.nabble.com/CentOS-cachefs-tp5724928p5725725.html
> Sent from the CentOS mailing list archive at Nabble.com.
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Re: [CentOS] cachefs

2014-04-02 Thread grants
We are using CentOS 6.5 and it has been very stable. 
we were hit with bugs in 6.2 6.3 and 6.4. 



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Re: [CentOS] cachefs

2014-03-09 Thread Rita
Yes, compiler cache is different. I suppose I should ask is there something
similar to cache?




On Fri, Mar 7, 2014 at 5:24 AM, Nux!  wrote:

> On 02.03.2014 15:58, Rita wrote:
> > thanks steve. seems like we are in the same boat.
> >
> > I was wondering if there was an alternative to cachefs like
> > http://ccache.samba.org/
>
> I don't see how a compiler cache could help you with your problem.
> That's a totally different thing.
>
> HTH
> Lucian
>
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Re: [CentOS] cachefs

2014-03-07 Thread Leon Fauster
Am 01.03.2014 um 13:48 schrieb Rita :
> has anyone been using cachefs with 6.x series? i have tried using it but i
> keep getting hung processes after 2 weeks.
> 
> ATM, running 6.3 but was curious if its more stable on Centos 6.5?


we use it with nfs (latest EL6 OS version). In the last year we had two 
system freezes caused by cachefs. Its still a tech preview. 

the nfs client performance is significant better with cachefs enabled. 

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Re: [CentOS] cachefs

2014-03-07 Thread Nux!
On 02.03.2014 15:58, Rita wrote:
> thanks steve. seems like we are in the same boat.
> 
> I was wondering if there was an alternative to cachefs like
> http://ccache.samba.org/

I don't see how a compiler cache could help you with your problem. 
That's a totally different thing.

HTH
Lucian

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Re: [CentOS] cachefs

2014-03-02 Thread Rita
thanks steve. seems like we are in the same boat.

I was wondering if there was an alternative to cachefs like
http://ccache.samba.org/




On Sat, Mar 1, 2014 at 9:10 AM, Steven Tardy  wrote:

>
> https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html-single/Storage_Administration_Guide/#rhel6storage-whatsnew
>
> fs-cache is a tech preview(Zero support from redhat).
>
> Tried cachefs on a few servers(don't remember if it was rhel 6.1 or 6.2 at
> the time), had problems (server hanging/unresponsive), asked redhat for
> support, was denied support, removed cachefs.
>
> Unsure if newer versions are more stable.("fool me once" kind if thing)
>
>
> > On Mar 1, 2014, at 7:48 AM, Rita  wrote:
> >
> > has anyone been using cachefs with 6.x series? i have tried using it but
> i
> > keep getting hung processes after 2 weeks.
> >
> > ATM, running 6.3 but was curious if its more stable on Centos 6.5?
> >
> > --
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Re: [CentOS] cachefs

2014-03-01 Thread Steven Tardy
https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html-single/Storage_Administration_Guide/#rhel6storage-whatsnew

fs-cache is a tech preview(Zero support from redhat).

Tried cachefs on a few servers(don't remember if it was rhel 6.1 or 6.2 at the 
time), had problems (server hanging/unresponsive), asked redhat for support, 
was denied support, removed cachefs.

Unsure if newer versions are more stable.("fool me once" kind if thing)


> On Mar 1, 2014, at 7:48 AM, Rita  wrote:
> 
> has anyone been using cachefs with 6.x series? i have tried using it but i
> keep getting hung processes after 2 weeks.
> 
> ATM, running 6.3 but was curious if its more stable on Centos 6.5?
> 
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[CentOS] cachefs

2014-03-01 Thread Rita
has anyone been using cachefs with 6.x series? i have tried using it but i
keep getting hung processes after 2 weeks.

ATM, running 6.3 but was curious if its more stable on Centos 6.5?

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