[ale] firefox s_l_o_w over nfs mounted /home

[Scott Bragg]

Sounds like significant drop in performance for large numbers of small file
writes.  Are you using async writes?   If I remember my nfs tuning params,
sync writes send a confirm for each file written and if you're writing a
lot of tiny files, it slows things significantly.   Once I get a break from
the wonderful fun of PowerDNS (/sarc) I'll dig into some of the nfs tuning
and see what I can find.    Beyond that, normal disk and filesystem tuning
for the types / sizes of file writes as well as possibly moving the dot
files and temp dirs off the nfs and onto the local workstation
 (/tmp/usr/.xyz  instead of /home/user/.xyz for instance) might help at
least troubleshoot.

Scott


On Wed, Sep 30, 2015 at 1:24 PM, Jim Kinney <jim.kinney at gmail.com> wrote:

> everything BUT firefox and Matlab are OK. Both are heavy writers to
> dotfiles :-(
>
> nfstat values are OK. As expected it varies throughout the day based on
> building usage.
>
> On Wed, 2015-09-30 at 13:19 -0400, Scott Bragg wrote:
>
> What kind of response rates do you get locally to that nfs mount?
>
> On Wed, Sep 30, 2015 at 1:12 PM, Jim Kinney <jim.kinney at gmail.com> wrote:
>
> I'm 99% certain that the 2-5 minute page load is due to the caching
> process and the mostly crappy bandwidth between my users and where their
> /home is sourced. So I disabled caching as a test. No change.
>
> I've checked DNS and it returns fast. Any other ideas to speed things up?
>
> --
> James P. Kinney III
>
> Every time you stop a school, you will have to build a jail. What you
> gain at one end you lose at the other. It's like feeding a dog on his
> own tail. It won't fatten the dog.
> - Speech 11/23/1900 Mark Twain
> http://heretothereideas.blogspot.com/
>
>
> _______________________________________________
> Ale mailing list
> Ale at ale.org
> http://mail.ale.org/mailman/listinfo/ale
> See JOBS, ANNOUNCE and SCHOOLS lists at
> http://mail.ale.org/mailman/listinfo
>
>
> _______________________________________________
> Ale mailing listAle at ale.orghttp://mail.ale.org/mailman/listinfo/ale
> See JOBS, ANNOUNCE and SCHOOLS lists athttp://mail.ale.org/mailman/listinfo
>
> --
> James P. Kinney III
>
> Every time you stop a school, you will have to build a jail. What you
> gain at one end you lose at the other. It's like feeding a dog on his
> own tail. It won't fatten the dog.
> - Speech 11/23/1900 Mark Twain
> http://heretothereideas.blogspot.com/
>
>
> _______________________________________________
> Ale mailing list
> Ale at ale.org
> http://mail.ale.org/mailman/listinfo/ale
> See JOBS, ANNOUNCE and SCHOOLS lists at
> http://mail.ale.org/mailman/listinfo
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.ale.org/pipermail/ale/attachments/20150930/63a51e4c/attachment.html>