samba - Nov 2024 - Slow reply to "smbclient -NL localhost" : strace

06.11.2024 08:59, Gilles via samba wrote:
>>> FWIW, there's no delay after I run it once? but only for a
couple of minutes.
>>
>> This suggests it might be a name resolution issue. 
> 
> What files could help find the source of the problem?
That's a strange question. Without understanding what the
actual problem is, it's hardly possible to point to the
solution.

Take a closer look at strace.  You've already noticed
the recv() call takes a noticeable time, - find all of
them.

BTW, in your strace output you omitted some important
pieces, for example, it isn't visible what FD#5 corresponds
to, since you omitted its creation/open.

The prob might not be the (host) name resolution of smbclient,
but on the receiving side too. Or might be something else
entirely.


/mjt

On 06/11/2024 08:04, Michael Tokarev wrote:
> Take a closer look at strace.? You've already noticed
> the recv() call takes a noticeable time, - find all of
> them.
>
> BTW, in your strace output you omitted some important
> pieces, for example, it isn't visible what FD#5 corresponds
> to, since you omitted its creation/open.
>
> The prob might not be the (host) name resolution of smbclient,
> but on the receiving side too. Or might be something else
> entirely. 
Here's the output of "strace --relative-timestamps -o 
strace.smbclient.log smbclient -NL 127.0.0.1" :

https://pastebin.com/raw/v3hFY5DB