From: Tom Lane <tgl@sss.pgh.pa.us>
To: Matthew Clark <mclark@drmatthewclark.com>
Cc: pgsql-bugs@lists.postgresql.org <pgsql-bugs@lists.postgresql.org>
Subject: Re: server crash on raspberry pi for large queries
Date: Tue, 20 Aug 2024 09:16:12 -0400
Message-ID: <1527796.1724159772@sss.pgh.pa.us> (raw)
In-Reply-To: <2123352386.9759142.1724114730509@mail.yahoo.com>
References: <2123352386.9759142.1724114730509.ref@mail.yahoo.com>
<2123352386.9759142.1724114730509@mail.yahoo.com>
Matthew Clark <mclark@drmatthewclark.com> writes:
> issue: when issuing a large query , e.g. "Select count(*) from temperature" on a table with > 150M rows the system crashes.
> example error: LOG: server process (PID 20037) was terminated by signal 4: Illegal instruction no more diagnostic information is generated.
> Workaround : this stops happening when jit_above_cost is set to -1 in postgresql.conf After changing this setting the problem stops.
What this sounds like is a memory leak in the JIT stuff. We fixed
one such issue last year, but perhaps there's more. Can you provide
a self-contained test case? Also, please be more specific about
which Linux version you are using, and which LLVM version.
regards, tom lane
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To: pgsql-bugs@postgresql.org
Cc: tgl@sss.pgh.pa.us, mclark@drmatthewclark.com, pgsql-bugs@lists.postgresql.org
Subject: Re: server crash on raspberry pi for large queries
In-Reply-To: <1527796.1724159772@sss.pgh.pa.us>
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