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diff --git a/notes/postgres_performance.txt b/notes/postgres_performance.txt
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-
-## Setup
-
-Add to postgres.conf:
-
-    shared_preload_libraries = 'auto_explain,pg_stat_statements'
-
-    # Increase the max size of the query strings Postgres records
-    track_activity_query_size = 2048
-
-    # Track statements generated by stored procedures as well
-    pg_stat_statements.track = all
-
-Also:
-    
-    track_counts (already default)
-    autovacuum (already default?)
-    log_min_error = warning
-    log_min_duration_statement = 5000
-
-Then from shell:
-
-    create extension pg_stat_statements;
-
-Regularly want to run:
-
-    VACUUM ANALYZE
-
-## Tuning Values
-
-postgres config:
-
-    max_connections = 100 (default)
-    shared_buffers = 128MB -> 10GB (while elastic on same machine; later 16 or more)
-    effective_cache_size = 4GB -> 24GB (while elastic on same machine)
-    work_mem = 4MB -> 128MB     # relatively few connections/box
-    fsync = on
-    commit_delay = ??? (and siblings)
-    random_page_cost = 1 (for SSD)
-    default_statistics_target = 100 -> 200
-    maintenance_work_mem = 64MB -> 8GB
-    synchronous_commit = off (during dev only! switch to on for production!)
-    wal_sync_method (keep default)
-    max_wal_size = 64 -> 128 (based on above HINT message)
-    # didn't mess with commit_delay/commit_siblings
-
-system:
-
-    sysctl -w vm.overcommit_memory=2
-    TODO: ulimit -n 65536
-    TODO: ulimit -p 800
-        LimitNOFILE
-        /lib/systemd/system/postgresql.service
-
-## Resources 
-
-https://www.geekytidbits.com/performance-tuning-postgres/
-
-Could try pgbadger to handle auto_explain type output.
-
-https://www.postgresql.org/docs/10/static/runtime-config-wal.html
-
-IA-specific resources:
-    https://git.archive.org/ia/mint/blob/master/postgres/postgres_9_2.yml
-    https://git.archive.org/ia/mint/blob/master/postgres/put_datadir_on_ssd.sh
-    https://git.archive.org/ia/mint/blob/master/postgres/templates/postgresql.conf.j2
-
-For bulk inserts:
-- make write-ahead-log larger (eg, 16MB. done.)
-- transactions of ~1000+ inserts
-- https://www.postgresql.org/docs/current/static/populate.html
-- https://www.depesz.com/2007/07/05/how-to-insert-data-to-database-as-fast-as-possible/
-- https://stackoverflow.com/questions/12206600/how-to-speed-up-insertion-performance-in-postgresql
-
-## 2018-06-27 Measurements (pre-tuning)
-
-fatcat_prod=# select count(*) from release_ident; 20983019
-fatcat_prod=# select count(*) from work_ident; 20988140
-fatcat_prod=# select count(*) from file_ident; 1482335
-fatcat_prod=# select count(*) from creator_ident; 4167419
-fatcat_prod=# select count(*) from container_ident; 61793
-
-select count(*) from release_contrib; 59798133
-
-bnewbold@wbgrp-svc500$ sudo du -sh /var/lib/postgresql/
-43G
-
-running import-crossref with 20 threads, and manifest importer with one (at 33%
-complete). had already imported ~7million works+releases previously.
-
-
- PostgreSQL 10.4 - wbgrp-svc500.us.archive.org - postgres@localhost:5432/postgre
-  Size:   41.38G -   323.40K/s        | TPS:         885
-  Mem.:   50.80% -    23.86G/49.14G   | IO Max:    79539/s
-  Swap:    0.80% -   408.89M/50.00G   | Read :     67.04K/s -     16/s
-  Load:    6.69 7.41 7.69             | Write:      1.93M/s -    493/s
-
-
-----total-cpu-usage---- -dsk/total- -net/total- ---paging-- ---system--
-usr sys idl wai hiq siq| read  writ| recv  send|  in   out | int   csw 
- 32   6  62   0   0   0| 296k 3880k| 334k 3144B|   0     0 |  21k   65k
- 31   6  62   0   0   0|   0  3072k| 391k  318B|   0     0 |  51k  141k
- 31   6  63   0   0   0|  16k 1080k| 344k 1988B|   0     0 |  35k  104k
- 29   6  65   0   0   0| 136k 2608k| 175k  332B|   0     0 |9835    15k
- 28   5  67   0   0   0| 408k 4368k| 285k  832B|   0     0 |  14k   17k
- 33   5  62   0   0   0|  56k 3256k| 219k   99B|   0     0 |  22k   49k
- 31   6  63   0   0   0| 188k 5120k| 158k  318B|   0     0 |  17k   29k
- 30   6  64   0   0   0| 200k 6984k| 239k  988B|   0     0 |  16k   24k
- 30   6  64   0   0   0| 168k 5504k| 159k  152B|   0     0 |  14k   20k
- 28   7  65   0   0   0| 440k   12M| 236k  420B|   0     0 |  15k   18k
- 29   6  65   0   0   0| 428k 6968k| 352k  310B|   0     0 |  19k   31k
- 32   6  62   0   0   0|  64k 3480k| 288k  318B|   0     0 |  18k   55k
- 32   6  62   0   0   0|  32k 2080k| 155k  318B|   0     0 |  20k   52k
-
-
-bnewbold@wbgrp-svc500$ uptime
- 22:00:42 up 28 days, 22:31,  6 users,  load average: 7.94, 7.56, 7.72
-
-
-2018-06-27 21:57:36.102 UTC [401] LOG:  checkpoints are occurring too frequently (13 seconds apart)
-2018-06-27 21:57:36.102 UTC [401] HINT:  Consider increasing the configuration parameter "max_wal_size".
-
-
-     relname     | too_much_seq |      case      |  rel_size   | seq_scan | idx_scan  
------------------+--------------+----------------+-------------+----------+-----------
- changelog       |      1274670 | Missing Index? |    39411712 |  1274670 |         0
- file_edit       |       612386 | Missing Index? |   108298240 |   612386 |         0
- creator_edit    |       612386 | Missing Index? |   285540352 |   612386 |         0
- container_edit  |       612386 | Missing Index? |     4784128 |   612386 |         0
- release_edit    |       612386 | Missing Index? |  1454489600 |   612386 |         0
- work_edit       |       612386 | Missing Index? |  1454415872 |   612386 |         0
- release_contrib |       296675 | Missing Index? |  4725645312 |   296675 |         0
- release_ref     |       296663 | Missing Index? |  8999837696 |   296663 |         0
- file_release    |         -113 | OK             |    13918208 |      110 |       223
- container_rev   |      -979326 | OK             |    16285696 |       63 |    979389
- file_ident      |     -3671516 | OK             |   109002752 |      362 |   3671878
- file_rev        |     -3944155 | OK             |   302940160 |       95 |   3944250
- creator_rev     |     -8420205 | OK             |   318283776 |     1226 |   8421431
- creator_ident   |     -9525338 | OK             |   309141504 |    52330 |   9577668
- container_ident |    -20581876 | OK             |     4833280 |   272457 |  20854333
- release_ident   |    -40548858 | OK             |  1440948224 |  4160919 |  44709777
- work_rev        |    -42534913 | OK             |  1124671488 |     1161 |  42536074
- editgroup       |    -48864662 | OK             |    34136064 |        1 |  48864663
- work_ident      |    -65008911 | OK             |  1503313920 |     1239 |  65010150
- release_rev     |   -185735794 | OK             | 13649428480 |      128 | 185735922
-
-## 2018-06-28 (after basic tuning + indexes)
-
-Early loading (manifest and 20x release):
-
-    PostgreSQL 10.4 - wbgrp-svc500.us.archive.org - postgres@localhost:5432/postgres - Ref.: 2s
-    Size:    4.57G -     6.45M/s        | TPS:       18812
-    Mem.:   59.70% -    23.62G/49.14G   | IO Max:     3601/s
-    Swap:    1.30% -   675.05M/50.00G   | Read :      0.00B/s -      0/s
-    Load:    12.98 10.58 5.25           | Write:      2.65M/s -    677/s
-
-
-      PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND 
-    24045 webcrawl  20   0  908872 204948  11756 S 153.3  0.4  16:13.03 fatcatd 
-    24328 webcrawl  20   0   78148  45220   4324 R  87.1  0.1   8:44.16 perl    
-    24056 postgres  20   0 10.441g 3.906g 3.886g R  69.9  7.9   6:57.47 postgres
-    24063 postgres  20   0 10.447g 3.899g 3.873g S  67.9  7.9   6:55.89 postgres
-    24059 postgres  20   0 10.426g 3.888g 3.883g R  67.5  7.9   6:59.15 postgres
-    24057 postgres  20   0 10.430g 3.883g 3.874g S  67.2  7.9   6:58.68 postgres
-    24061 postgres  20   0 10.448g 3.909g 3.881g R  66.2  8.0   6:54.30 postgres
-    24058 postgres  20   0 10.428g 3.883g 3.876g R  65.9  7.9   6:59.35 postgres
-    24062 postgres  20   0 10.426g 5.516g 5.511g R  64.9 11.2   6:58.29 postgres
-    24055 postgres  20   0 10.426g 3.878g 3.873g R  64.2  7.9   6:59.38 postgres
-    24054 postgres  20   0 10.430g 5.499g 5.491g R  63.6 11.2   6:57.27 postgres
-    24060 postgres  20   0 10.448g 3.900g 3.873g R  61.9  7.9   6:55.45 postgres
-    21711 postgres  20   0 10.419g 5.762g 5.760g D  16.6 11.7   3:00.67 postgres
-    21713 postgres  20   0 10.419g  21432  19512 S  11.3  0.0   3:25.11 postgres
-    24392 webcrawl  20   0 5309636 400912   8696 S   7.9  0.8   0:53.18 python3 
-    24383 webcrawl  20   0 5309436 400628   8648 S   7.6  0.8   0:52.29 python3 
-    24387 webcrawl  20   0 5309776 402968   8620 S   7.3  0.8   0:52.81 python3 
-    24394 webcrawl  20   0 5309624 400732   8644 S   7.3  0.8   0:53.30 python3 
-    24384 webcrawl  20   0 5309916 400948   8600 S   7.0  0.8   0:53.18 python3 
-
-Still get a *lot* of:
-
-    2018-06-29 00:14:05.948 UTC [21711] LOG:  checkpoints are occurring too frequently (1 second apart)
-    2018-06-29 00:14:05.948 UTC [21711] HINT:  Consider increasing the configuration parameter "max_wal_size".
-
-VACUUM is running basically continuously; should prevent that? 6 hours or
-longer on release_rev and release_ref tables. An auto-approve batch method
-would resovle this, I think (no update after insert).
-
-max_wal_size wasn't getting set correctly.
-
-The statements taking the most time are the complex inserts (multi-table
-inserts); they take a fraction of a second though (mean less than a
-milisecond).
-
-Manifest import runs really slow if release import is concurrent; much faster
-to wait until release import is done first (like a factor of 10x or more).
-
-With some 60 million releases:
-
-    bnewbold@wbgrp-svc500$ sudo du -sh /var/lib/postgresql/
-    184G    /var/lib/postgresql/
-
-TODO: slow query log doesn't seem to be working (let alone auto_explain)
-