slow directory operation on huge dirs

[Cy Schubert]

On January 23, 2020 8:41:47 AM PST, Mike Tancsa <mike at sentex.net> wrote:
>On 1/23/2020 1:40 PM, Wojciech Puchar wrote:
>>
>> first - we have DIRHASH option and i have it enabled.
>> second - it is not just a problem of huge directory but both huge
>> directory and large maxvnodes settings.
>>
>> Large directories works fast when kern.maxvnodes is small and there
>is
>> enough dirhash_maxmem.
>>
>> it's clearly an error somewhere. 
>
>
>Dont know about the vnodes adjustment, and its probably not related.
>But
>on our largish mail servers, we need to change the defaults in nsswitch
>as ls takes forever on large directories otherwise.
>
>--- /usr/src/etc/nsswitch.conf  2019-07-10 14:46:40.871619000 -0400
>+++ /etc/nsswitch.conf  2016-01-27 14:21:30.400226032 -0500
>@@ -1,13 +1,12 @@
> #
> # nsswitch.conf(5) - name service switch configuration file
>-# $FreeBSD: stable/11/etc/nsswitch.conf 301711 2016-06-09 01:28:44Z
>markj $
>+# $FreeBSD: src/etc/nsswitch.conf,v 1.1.10.1 2009/08/03 08:13:06
>kensmith Exp $
> #
>-group: compat
>+group: files
> group_compat: nis
> hosts: files dns
>-netgroup: compat
> networks: files
>-passwd: compat
>+passwd: files
> passwd_compat: nis
> shells: files
> services: compat
>
>
>    ---Mike
>
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Do you use a directory service such as ldap, nis, or a/d?
-- 
Pardon the typos and autocorrect, small keyboard in use. 
Cy Schubert <Cy.Schubert at cschubert.com>
FreeBSD UNIX: <cy at FreeBSD.org> Web: https://www.FreeBSD.org

The need of the many outweighs the greed of the few.

Sent from my Android device with K-9 Mail. Please excuse my brevity.