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From: "Colin 't Hart" <colinthart@gmail.com>
Date: Tue, 2 Dec 2025 15:47:48 +0100
Message-ID: <CAMon-aQz20Mv12T1RNL1T0eaWg-=nqu0WZuwVsh587rKbdf8aA@mail.gmail.com>
Subject: wdavdaemon / Microsoft Defender for Endpoint on Linux and slow
 Postgres recovery?
To: PostgreSQL General <pgsql-general@lists.postgresql.org>
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Hi,

One of my clients has Microsoft Defender for Endpoint on Linux installed on
their Postgres servers.

I was testing a database restore from pgBackRest. The restore itself
seemed to complete in a reasonable amount of time, but then the Postgres
recovery started and it was extremely slow to retrieve and apply the WAL
files.

I noticed wdavdaemon taking most of the CPU, and Postgres getting very
little.

I wonder if anyone here has any experience with configuring exclusions so
that the WAL files can be processed faster?

AND

Any advice on what to communicate with their IT department about using this
on their database servers? I've never encountered it on Linux before...

Thanks,

Colin

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<div dir=3D"ltr"><div>Hi,</div><div><br></div><div>One of my clients has=C2=
=A0Microsoft Defender for Endpoint on Linux=C2=A0installed on their Postgre=
s servers.</div><div><br></div><div>I was testing a database restore from p=
gBackRest. The restore itself seemed=C2=A0to complete in a reasonable amoun=
t of time, but then the Postgres recovery started and it was extremely slow=
 to retrieve and apply the WAL files.</div><div><br></div><div>I noticed wd=
avdaemon taking most of the CPU, and Postgres getting very little.</div><di=
v><br></div><div>I wonder if anyone here has any experience with configurin=
g exclusions so that the WAL files can be processed faster?</div><div><br><=
/div><div>AND</div><div><br></div><div>Any advice on what=C2=A0to communica=
te with their IT department about using this on their database servers? I&#=
39;ve never encountered it on Linux before...</div><div><br></div><div>Than=
ks,</div><div><br></div><div>Colin</div></div>

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