Re: [Samba] Samba 4.7.x IOWAIT / load average
- Date: Wed, 10 Jan 2018 11:20:30 +0100
- From: Christophe Yayon via samba <samba@xxxxxxxxxxxxxxx>
- Subject: Re: [Samba] Samba 4.7.x IOWAIT / load average
I found the problem !
It was the params "strict sync" which is default to "Yes" on 4.7.x and "No" on 4.6.x and previous.
When i force to "strict sync = no" in my config file, no more abnormal load average.
is this normal to default to "yes" on 4.7.x ?
On Wed, Jan 10, 2018, at 07:11, Christophe Yayon via samba wrote:
> Hi Jeremy,
> What do you need exactly ?
> Christophe Yayon
> > On 10 Jan 2018, at 01:38, Jeremy Allison <jra@xxxxxxxxx> wrote:
> >> On Tue, Jan 09, 2018 at 03:27:17PM +0100, Christophe Yayon via samba wrote:
> >> Hi,
> >> I want to report a strange problem with samba 4.7.x and IO wait / CPU usage.
> >> I am using linux (archlinux, kernel 4.14.2) and encounter a very strange bug with only samba 4.7.x (from 4.7.0 to last 4.7.4).
> >> With these versions CPU usage and IO WAIT is very high with a single CIFS client with very low transfert (about 1MB/s).
> >> I rollback to 4.6.9 to 4.6.12 and no problem with these versions.
> > More details/logs needed. Not enough info here to even begin
> > to debug I'm afraid.
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