gburd

CF 7392 benchmarks: ORDER BY values to the target list

Scripts, raw samples and plans behind the numbers in the pgsql-hackers thread "Let an ordering index scan hand its ORDER BY value to the target list": https://postgr.es/m/8s5lT8erXzBMugXJQ6Wginbp_gc2B4hmCYhF0Q0GpnuK87eCAOcKs5K31AWCwraCNFIQt42wwkow_MPPubHg485MWv-zDBY4NL_JX9yJEEg=@burd.me

Patches: v5, https://github.com/gburd/postgres/tree/ntsv (commits below).

This is revision 2. Revision 1 (935f94e, still readable in this gist's history) had defects found in an outside review; they are listed under

gburd

https://github.com/anthropics/claude-code/tree/main/plugins

Rust property based testing

https://github.com/hegeldev/hegel-skill

/plugin marketplace add hegeldev/hegel-skill /plugin install hegel-skill@hegeldev-hegel-skill

Development planning/structuring

https://github.com/Roeia1/SAGA

gburd

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gburd

---
# Configure clang-tidy for this project.
#
# Here is an explanation for why some of the checks are disabled:
#
#  -readability-function-cognitive-complexity: too many false positives with
#      clang-tidy-12. We need to disable this check in macros, and that setting
#      only appears in clang-tidy-13.
#
#  -bugprone-narrowing-conversions: too many false positives.

gburd

/* Skip Lists: A Probabilistic Alternative to Balanced Trees */

#include <stdlib.h>
#include <stdio.h>
#include <limits.h>

#define SKIPLIST_MAX_LEVEL 6

typedef struct snode {
    int key;

gburd

```
docker buildx build --format docker --progress=plain --no-cache --rm --platform linux/x86_64 --load -t symas/openldap:latest .
mkdir /tmp/ldap
chmod 0777 /tmp/ldap
clear; sudo rm -rf /tmp/ldap/{.ldap_setup_complete,slapd.d,data}; docker run --rm -e BITNAMI_DEBUG=true --name=symas-openldap -p 1389:1389 -p 1639:1639 --volume /tmp/ldap:/bitnami/openldap --user 1001 symas/openldap:latest
```

gburd@floki ~/w/c/o/2/debian-11 (main)> sudo rm -rf /tmp/ldap/{.ldap_setup_complete,slapd.d,data}; docker run --rm -e BITNAMI_DEBUG=true --name=symas-openldap -p 1389:1389 -p 1639:1639 --volume /tmp/ldap:/bitnami/openldap --user 1001 symas/openldap:latest
 17:55:10.09 INFO  ==> ** Starting LDAP setup **
 17:55:10.12 INFO  ==> Validating settings in LDAP_* env vars

gburd

-- This is done once per database instance.

BEGIN;
CREATE SCHEMA partman;
CREATE EXTENSION pg_partman SCHEMA partman;
COMMIT;

BEGIN;
CREATE ROLE partman WITH LOGIN;
GRANT ALL ON SCHEMA partman TO partman;

gburd

## This file is a direct import of code from an MIT licensed project:
## digma-ai/opentelemetry-instrumentation-digma
##
## https://github.com/digma-ai/opentelemetry-instrumentation-digma/blob/main/LICENSE
## https://raw.githubusercontent.com/digma-ai/opentelemetry-instrumentation-digma/main/src/opentelemetry/instrumentation/digma/trace_decorator.py
##

import inspect
import types
from functools import wraps

gburd

  defmodule FlattenArray do
    @doc """
    Accept a list and return the list flattened without nil values.
    ## Examples
    iex> FlattenArray.flatten([1, [2], 3, nil])
    [1,2,3]
    iex> FlattenArray.flatten([nil, nil])
    []
    """

gburd

-Xms128m
-Xmx2048m
-XX:ReservedCodeCacheSize=512m
-XX:+UseG1GC
-XX:SoftRefLRUPolicyMSPerMB=50
-XX:CICompilerCount=2
-XX:+HeapDumpOnOutOfMemoryError
-XX:-OmitStackTraceInFastThrow
-ea
-Dsun.io.useCanonCaches=false