11250705 - Githubissues

saza-ku commented 10 months ago

isucon1

alp

+-------+--------+------------------------------------------+-------+-------+---------+-------+-------+
| COUNT | METHOD |                   URI                    |  MIN  |  MAX  |   SUM   |  AVG  |  P99  |
+-------+--------+------------------------------------------+-------+-------+---------+-------+-------+
| 24462 | GET    | /api/user/.+/icon                        | 0.004 | 0.148 | 226.403 | 0.009 | 0.036 |
| 414   | GET    | /api/livestream/.+                       | 0.004 | 1.188 | 186.599 | 0.451 | 0.944 |
| 2854  | GET    | /api/livestream/.+/livecomment           | 0.004 | 0.124 | 74.249  | 0.026 | 0.056 |
| 2885  | GET    | /api/livestream/.+/reaction              | 0.004 | 0.120 | 70.768  | 0.025 | 0.052 |
| 565   | POST   | /api/register                            | 0.028 | 0.220 | 62.389  | 0.110 | 0.164 |
| 2714  | POST   | /api/livestream/.+/livecomment           | 0.004 | 0.156 | 58.205  | 0.021 | 0.048 |
| 2619  | POST   | /api/livestream/.+/reaction              | 0.004 | 0.132 | 52.125  | 0.020 | 0.048 |
| 490   | POST   | /api/livestream/.+                       | 0.024 | 0.156 | 30.640  | 0.063 | 0.124 |
| 602   | POST   | /api/icon                                | 0.004 | 0.104 | 7.960   | 0.013 | 0.048 |
| 169   | GET    | /api/livestream                          | 0.004 | 0.140 | 7.917   | 0.047 | 0.136 |
| 33    | GET    | /api/user/.+/statistics                  | 0.028 | 0.393 | 5.946   | 0.180 | 0.393 |
| 52    | GET    | /api/livestream/.+/statistics            | 0.084 | 0.264 | 5.945   | 0.114 | 0.264 |
| 570   | POST   | /api/login                               | 0.004 | 0.212 | 5.560   | 0.010 | 0.036 |
| 229   | POST   | /api/livestream/.+/moderate              | 0.004 | 0.072 | 4.776   | 0.021 | 0.052 |
| 498   | GET    | /api/tag                                 | 0.004 | 0.112 | 4.624   | 0.009 | 0.036 |
| 457   | GET    | /api/livestream/.+/report                | 0.004 | 0.084 | 4.524   | 0.010 | 0.056 |
| 31    | GET    | /api/user/.+/livestream                  | 0.028 | 0.212 | 2.884   | 0.093 | 0.212 |
| 340   | GET    | /api/livestream/.+/ngwords               | 0.008 | 0.092 | 2.824   | 0.008 | 0.056 |
| 249   | POST   | /api/livestream/.+/enter                 | 0.004 | 0.188 | 2.300   | 0.009 | 0.048 |
| 239   | DELETE | /api/livestream/.+/exit                  | 0.004 | 0.036 | 1.752   | 0.007 | 0.024 |
| 58    | POST   | /api/livestream/.+/livecomment/.+/report | 0.004 | 0.084 | 1.576   | 0.027 | 0.084 |
| 30    | GET    | /api/user/.+/theme                       | 0.004 | 0.020 | 0.288   | 0.010 | 0.020 |
| 12    | GET    | /api/user/.+                             | 0.004 | 0.108 | 0.172   | 0.014 | 0.108 |
| 1     | GET    | /assets/login-dc4055a7.js                | 0.000 | 0.000 | 0.000   | 0.000 | 0.000 |
| 4     | GET    | /assets/ISUPipe_yoko_color-fc80178e.png  | 0.000 | 0.000 | 0.000   | 0.000 | 0.000 |
| 2     | GET    | /assets/FormLabel-c342aa29.js            | 0.000 | 0.000 | 0.000   | 0.000 | 0.000 |
| 2     | GET    | /assets/index-55457d82.js                | 0.000 | 0.000 | 0.000   | 0.000 | 0.000 |
| 2     | GET    | /assets/index-5265c558.css               | 0.000 | 0.000 | 0.000   | 0.000 | 0.000 |
| 1     | GET    | /                                        | 0.000 | 0.000 | 0.000   | 0.000 | 0.000 |
| 1     | GET    | /assets/index.esm-bd2deef7.js            | 0.000 | 0.000 | 0.000   | 0.000 | 0.000 |
| 1     | GET    | /favicon.ico                             | 0.000 | 0.000 | 0.000   | 0.000 | 0.000 |
| 1     | GET    | /api/payment                             | 0.000 | 0.000 | 0.000   | 0.000 | 0.000 |
| 1     | GET    | /user                                    | 0.000 | 0.000 | 0.000   | 0.000 | 0.000 |
| 1     | GET    | /assets/user-04696bae.js                 | 0.000 | 0.000 | 0.000   | 0.000 | 0.000 |
+-------+--------+------------------------------------------+-------+-------+---------+-------+-------+

slow query

explain

Reading from STDIN ...

# No events processed.

netdata

http://localhost:19991/#menu_services;after=1700895935823;before=1700896011855

pprof

go tool pprof -http=0.0.0.0:1080 http://isucon1/pprof/11250705

saza-ku commented 10 months ago

isucon2

alp

+-------+--------+-----+-----+-----+-----+-----+-----+
| COUNT | METHOD | URI | MIN | MAX | SUM | AVG | P99 |
+-------+--------+-----+-----+-----+-----+-----+-----+
+-------+--------+-----+-----+-----+-----+-----+-----+

slow query

Count: 32564  Time=0.00s (58s)  Lock=0.00s (0s)  Rows=0.2 (5232), isudns[isudns]@isucon1
  SELECT content,ttl,prio,type,domain_id,disabled,name,auth FROM records WHERE disabled=N and name='S' and domain_id=N

Count: 23406  Time=0.00s (39s)  Lock=0.00s (0s)  Rows=0.5 (11867), isudns[isudns]@isucon1
  SELECT content,ttl,prio,type,domain_id,disabled,name,auth FROM records WHERE disabled=N and type='S' and name='S'

Count: 39984  Time=0.00s (4s)  Lock=0.00s (0s)  Rows=0.0 (0), isudns[isudns]@isucon1
  select kind,content from domains, domainmetadata where domainmetadata.domain_id=domains.id and name='S'

Count: 563  Time=0.00s (2s)  Lock=0.00s (0s)  Rows=0.0 (0), isudns[isudns]@isucon1
  delete from records where domain_id=N and name='S' and type='S'

Count: 1126  Time=0.00s (2s)  Lock=0.00s (0s)  Rows=0.5 (563), isudns[isudns]@isucon1
  SELECT content,ttl,prio,type,domain_id,disabled,name,auth FROM records WHERE disabled=N and type='S' and name='S' and domain_id=N

Count: 94888  Time=0.00s (1s)  Lock=0.00s (0s)  Rows=0.0 (0), isudns[isudns]@isucon1
  #

Count: 563  Time=0.00s (0s)  Lock=0.00s (0s)  Rows=0.0 (0), isudns[isudns]@isucon1
  commit

Count: 563  Time=0.00s (0s)  Lock=0.00s (0s)  Rows=0.0 (0), isudns[isudns]@isucon1
  insert into records (content,ttl,prio,type,domain_id,disabled,name,ordername,auth) values ('S',N,N,'S',N,N,'S',NULL,N)

Count: 563  Time=0.00s (0s)  Lock=0.00s (0s)  Rows=1.0 (563), isudns[isudns]@isucon1
  select id,name,master,last_check,notified_serial,type,options,catalog,account from domains where name='S'

Count: 1126  Time=0.00s (0s)  Lock=0.00s (0s)  Rows=0.0 (0), isudns[isudns]@isucon1
  SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED

explain

Reading from STDIN ...

# 12.2s user time, 50ms system time, 36.75M rss, 51.07M vsz
# Current date: Sat Nov 25 07:07:10 2023
# Hostname: ip-192-168-0-12
# Files: STDIN
# Overall: 195.92k total, 20 unique, 2.36k QPS, 1.31x concurrency ________
# Time range: 2023-11-25T07:05:35 to 2023-11-25T07:06:58
# Attribute          total     min     max     avg     95%  stddev  median
# ============     ======= ======= ======= ======= ======= ======= =======
# Exec time           109s     1us    14ms   555us     2ms   841us    89us
# Lock time          177ms       0     4ms       0     1us    23us       0
# Rows sent         17.80k       0       1    0.09    0.99    0.29       0
# Rows examine      85.88M       0   1.80k  459.65   1.69k  700.05       0
# Query size        15.17M       5     221   81.19  151.03   48.74  112.70

# Profile
# Rank Query ID                      Response time Calls R/Call V/M   Item
# ==== ============================= ============= ===== ====== ===== ====
#    1 0x42EF7D7D98FBCC9723BF896E... 58.7695 54.0% 32564 0.0018  0.00 SELECT records
#    2 0x3D83BC87F3B3A00D571FFC81... 39.1313 36.0% 23406 0.0017  0.00 SELECT records
#    3 0x22279D81D51006139E0C7640...  4.7903  4.4% 39984 0.0001  0.00 SELECT domains domainmetadata
#    4 0x859BBB7E9D760686137A9444...  2.3082  2.1%   563 0.0041  0.00 DELETE records
# MISC 0xMISC                         3.7439  3.4% 99399 0.0000   0.0 <16 ITEMS>

# Query 1: 471.94 QPS, 0.85x concurrency, ID 0x42EF7D7D98FBCC9723BF896EBFC51D24 at byte 39364646
# This item is included in the report because it matches --limit.
# Scores: V/M = 0.00
# Time range: 2023-11-25T07:05:35 to 2023-11-25T07:06:44
# Attribute    pct   total     min     max     avg     95%  stddev  median
# ============ === ======= ======= ======= ======= ======= ======= =======
# Count         16   32564
# Exec time     54     59s   701us    11ms     2ms     3ms   592us     2ms
# Lock time     24    43ms       0     2ms     1us     1us    10us     1us
# Rows sent     28   5.11k       0       1    0.16    0.99    0.36       0
# Rows examine  56  48.48M   1.25k   1.80k   1.52k   1.69k  155.34   1.46k
# Query size    29   4.41M     129     221  141.84  158.58   11.83  136.99
# String:
# Hosts        isucon1
# Users        isudns
# Query_time distribution
#   1us
#  10us
# 100us  #
#   1ms  ################################################################
#  10ms  #
# 100ms
#    1s
#  10s+
# Tables
#    SHOW TABLE STATUS LIKE 'records'\G
#    SHOW CREATE TABLE `records`\G
# EXPLAIN /*!50100 PARTITIONS*/
SELECT content,ttl,prio,type,domain_id,disabled,name,auth FROM records WHERE disabled=0 and name='*.u.isucon.dev' and domain_id=4\G
# EXPLAIN failed: DBD::mysql::st execute failed: Table 'isupipe.records' doesn't exist [for Statement "EXPLAIN SELECT content,ttl,prio,type,domain_id,disabled,name,auth FROM records WHERE disabled=0 and name='*.u.isucon.dev' and domain_id=4"] at /usr/bin/pt-query-digest line 7796.

# Query 2: 339.22 QPS, 0.57x concurrency, ID 0x3D83BC87F3B3A00D571FFC8104A6E50C at byte 6508202
# This item is included in the report because it matches --limit.
# Scores: V/M = 0.00
# Time range: 2023-11-25T07:05:35 to 2023-11-25T07:06:44
# Attribute    pct   total     min     max     avg     95%  stddev  median
# ============ === ======= ======= ======= ======= ======= ======= =======
# Count         11   23406
# Exec time     35     39s   659us    14ms     2ms     3ms   543us     2ms
# Lock time     18    33ms       0     2ms     1us     1us    16us     1us
# Rows sent     65  11.59k       0       1    0.51    0.99    0.50    0.99
# Rows examine  40  34.88M   1.25k   1.80k   1.53k   1.69k  155.52   1.46k
# Query size    19   3.03M     126     220  135.66  151.03   11.20  124.25
# String:
# Hosts        isucon1
# Users        isudns
# Query_time distribution
#   1us
#  10us
# 100us  #
#   1ms  ################################################################
#  10ms  #
# 100ms
#    1s
#  10s+
# Tables
#    SHOW TABLE STATUS LIKE 'records'\G
#    SHOW CREATE TABLE `records`\G
# EXPLAIN 
SELECT content,ttl,prio,type,domain_id,disabled,name,auth FROM records WHERE disabled=0 and type='SOA' and name='5isvhr8t5v77a50.u.isucon.dev'\G
# EXPLAIN failed: DBD::mysql::st execute failed: Table 'isupipe.records' doesn't exist [for Statement "EXPLAIN SELECT content,ttl,prio,type,domain_id,disabled,name,auth FROM records WHERE disabled=0 and type='SOA' and name='5isvhr8t5v77a50.u.isucon.dev'"] at /usr/bin/pt-query-digest line 7796.

# Query 3: 579.48 QPS, 0.07x concurrency, ID 0x22279D81D51006139E0C76405B54C261 at byte 24748768
# This item is included in the report because it matches --limit.
# Scores: V/M = 0.00
# Time range: 2023-11-25T07:05:35 to 2023-11-25T07:06:44
# Attribute    pct   total     min     max     avg     95%  stddev  median
# ============ === ======= ======= ======= ======= ======= ======= =======
# Count         20   39984
# Exec time      4      5s    71us     4ms   119us   152us    99us   103us
# Lock time     34    60ms       0   936us     1us     1us     7us     1us
# Rows sent      0       0       0       0       0       0       0       0
# Rows examine   0       0       0       0       0       0       0       0
# Query size    28   4.35M     114     114     114     114       0     114
# String:
# Hosts        isucon1
# Users        isudns
# Query_time distribution
#   1us
#  10us  ###############
# 100us  ################################################################
#   1ms  #
#  10ms
# 100ms
#    1s
#  10s+
# Tables
#    SHOW TABLE STATUS LIKE 'domains'\G
#    SHOW CREATE TABLE `domains`\G
#    SHOW TABLE STATUS LIKE 'domainmetadata'\G
#    SHOW CREATE TABLE `domainmetadata`\G
# EXPLAIN 
select kind,content from domains, domainmetadata where domainmetadata.domain_id=domains.id and name='u.isucon.dev'\G
# EXPLAIN failed: DBD::mysql::st execute failed: Table 'isupipe.domains' doesn't exist [for Statement "EXPLAIN select kind,content from domains, domainmetadata where domainmetadata.domain_id=domains.id and name='u.isucon.dev'"] at /usr/bin/pt-query-digest line 7796.

# Query 4: 8.28 QPS, 0.03x concurrency, ID 0x859BBB7E9D760686137A944406874C4D at byte 54894723
# This item is included in the report because it matches --limit.
# Scores: V/M = 0.00
# Time range: 2023-11-25T07:05:36 to 2023-11-25T07:06:44
# Attribute    pct   total     min     max     avg     95%  stddev  median
# ============ === ======= ======= ======= ======= ======= ======= =======
# Count          0     563
# Exec time      2      2s     2ms    10ms     4ms     6ms     1ms     4ms
# Lock time     21    38ms       0     4ms    66us     1us   401us     1us
# Rows sent      0       0       0       0       0       0       0       0
# Rows examine   0 858.23k   1.25k   1.80k   1.52k   1.69k  160.73   1.46k
# Query size     0  47.03k      78      93   85.54   88.31    3.30   84.10
# String:
# Hosts        isucon1
# Users        isudns
# Query_time distribution
#   1us
#  10us
# 100us
#   1ms  ################################################################
#  10ms  #
# 100ms
#    1s
#  10s+
# Tables
#    SHOW TABLE STATUS LIKE 'records'\G
#    SHOW CREATE TABLE `records`\G
delete from records where domain_id=4 and name='sayuri170.u.isucon.dev' and type='A'\G
# Converted for EXPLAIN
# EXPLAIN 
select * from  records where domain_id=4 and name='sayuri170.u.isucon.dev' and type='A'\G

netdata

http://localhost:19992/#menu_services;after=1700895935825;before=1700896015833

pprof

go tool pprof -http=0.0.0.0:1080 http://isucon2/pprof/11250705

saza-ku commented 10 months ago

isucon3

alp

+-------+--------+-----+-----+-----+-----+-----+-----+
| COUNT | METHOD | URI | MIN | MAX | SUM | AVG | P99 |
+-------+--------+-----+-----+-----+-----+-----+-----+
+-------+--------+-----+-----+-----+-----+-----+-----+

slow query

Count: 41379  Time=0.00s (33s)  Lock=0.00s (0s)  Rows=1.0 (41379), isucon[isucon]@isucon1
  SELECT * FROM themes WHERE user_id = N

Count: 159332  Time=0.00s (14s)  Lock=0.00s (0s)  Rows=1.0 (159332), isucon[isucon]@isucon1
  SELECT * FROM tags WHERE id = N

Count: 487  Time=0.02s (9s)  Lock=0.00s (0s)  Rows=0.0 (0), isucon[isucon]@isucon1
  UPDATE reservation_slots SET slot = slot - N WHERE start_at >= N AND end_at <= N

Count: 488  Time=0.02s (7s)  Lock=0.00s (0s)  Rows=9.9 (4816), isucon[isucon]@isucon1
  SELECT * FROM reservation_slots WHERE start_at >= N AND end_at <= N FOR UPDATE

Count: 26359  Time=0.00s (6s)  Lock=0.00s (0s)  Rows=0.8 (21709), isucon[isucon]@isucon1
  SELECT icon_path FROM icons WHERE user_id = N

Count: 2603  Time=0.00s (5s)  Lock=0.00s (0s)  Rows=9.9 (25791), isucon[isucon]@isucon1
  SELECT * FROM livecomments WHERE livestream_id = N ORDER BY created_at DESC

Count: 35261  Time=0.00s (5s)  Lock=0.00s (0s)  Rows=4.5 (159338), isucon[isucon]@isucon1
  SELECT * FROM livestream_tags WHERE livestream_id = N

Count: 2637  Time=0.00s (5s)  Lock=0.00s (0s)  Rows=9.6 (25206), isucon[isucon]@isucon1
  SELECT * FROM reactions WHERE livestream_id = N ORDER BY created_at DESC

Count: 40785  Time=0.00s (4s)  Lock=0.00s (0s)  Rows=1.0 (40785), isucon[isucon]@isucon1
  SELECT * FROM users WHERE id = N

Count: 233  Time=0.02s (4s)  Lock=0.00s (0s)  Rows=3.6 (839), isucon[isucon]@isucon1
  SELECT * FROM livestreams WHERE user_id = N

explain

Reading from STDIN ...

# 28.1s user time, 110ms system time, 38.00M rss, 52.32M vsz
# Current date: Sat Nov 25 07:07:28 2023
# Hostname: ip-192-168-0-13
# Files: STDIN
# Overall: 468.06k total, 66 unique, 5.51k QPS, 1.46x concurrency ________
# Time range: 2023-11-25T07:05:35 to 2023-11-25T07:07:00
# Attribute          total     min     max     avg     95%  stddev  median
# ============     ======= ======= ======= ======= ======= ======= =======
# Exec time           124s     1us    79ms   264us   761us     1ms    76us
# Lock time          430ms       0     7ms       0     1us    23us     1us
# Rows sent          1.57M       0   7.79k    3.52    4.96   91.52    0.99
# Rows examine      91.13M       0  13.07k  204.14   1.26k  644.67    0.99
# Query size        16.91M       6     453   37.89   62.76   25.85   31.70

# Profile
# Rank Query ID                     Response time Calls  R/Call V/M   Item
# ==== ============================ ============= ====== ====== ===== ====
#    1 0x38BC86A45F31C6B1EE32467... 33.6618 27.2%  41379 0.0008  0.00 SELECT themes
#    2 0xFBC5564AE716EAE82F20BFB... 14.5671 11.8% 159332 0.0001  0.00 SELECT tags
#    3 0xA3401CA3ABCC04C3AB221DB...  9.0925  7.4%    487 0.0187  0.00 UPDATE reservation_slots
#    4 0x7F9C0C0BA9473953B723EE1...  7.6300  6.2%    488 0.0156  0.00 SELECT reservation_slots
# MISC 0xMISC                       58.7400 47.5% 266375 0.0002   0.0 <62 ITEMS>

# Query 1: 608.51 QPS, 0.50x concurrency, ID 0x38BC86A45F31C6B1EE324671506C898A at byte 97168231
# This item is included in the report because it matches --limit.
# Scores: V/M = 0.00
# Time range: 2023-11-25T07:05:35 to 2023-11-25T07:06:43
# Attribute    pct   total     min     max     avg     95%  stddev  median
# ============ === ======= ======= ======= ======= ======= ======= =======
# Count          8   41379
# Exec time     27     34s   236us    13ms   813us     2ms   690us   596us
# Lock time     10    47ms       0     6ms     1us     1us    36us     1us
# Rows sent      2  40.41k       1       1       1       1       0       1
# Rows examine  55  50.35M    1000   1.52k   1.25k   1.46k  159.63   1.20k
# Query size     9   1.61M      38      41   40.88   40.45    0.60   40.45
# String:
# Hosts        isucon1
# Users        isucon
# Query_time distribution
#   1us
#  10us
# 100us  ################################################################
#   1ms  ############
#  10ms  #
# 100ms
#    1s
#  10s+
# Tables
#    SHOW TABLE STATUS LIKE 'themes'\G
#    SHOW CREATE TABLE `themes`\G
# EXPLAIN /*!50100 PARTITIONS*/
SELECT * FROM themes WHERE user_id = 1065\G
# *************************** 1. row ***************************
#            id: 1
#   select_type: SIMPLE
#         table: themes
#    partitions: NULL
#          type: ALL
# possible_keys: NULL
#           key: NULL
#       key_len: NULL
#           ref: NULL
#          rows: 1561
#      filtered: 10.00
#         Extra: Using where

# Query 2: 2.38k QPS, 0.22x concurrency, ID 0xFBC5564AE716EAE82F20BFB45F6C37E7 at byte 12740740
# This item is included in the report because it matches --limit.
# Scores: V/M = 0.00
# Time range: 2023-11-25T07:05:36 to 2023-11-25T07:06:43
# Attribute    pct   total     min     max     avg     95%  stddev  median
# ============ === ======= ======= ======= ======= ======= ======= =======
# Count         34  159332
# Exec time     11     15s    41us    10ms    91us   131us   161us    66us
# Lock time     40   175ms       0     5ms     1us     1us    23us     1us
# Rows sent      9 155.60k       1       1       1       1       0       1
# Rows examine   0 155.60k       1       1       1       1       0       1
# Query size    28   4.86M      31      33   31.96   31.70    0.42   31.70
# String:
# Hosts        isucon1
# Users        isucon
# Query_time distribution
#   1us
#  10us  ################################################################
# 100us  ####
#   1ms  #
#  10ms
# 100ms
#    1s
#  10s+
# Tables
#    SHOW TABLE STATUS LIKE 'tags'\G
#    SHOW CREATE TABLE `tags`\G
# EXPLAIN 
SELECT * FROM tags WHERE id = 11\G
# *************************** 1. row ***************************
#            id: 1
#   select_type: SIMPLE
#         table: tags
#    partitions: NULL
#          type: const
# possible_keys: PRIMARY
#           key: PRIMARY
#       key_len: 8
#           ref: const
#          rows: 1
#      filtered: 100.00
#         Extra: NULL

# Query 3: 7.16 QPS, 0.13x concurrency, ID 0xA3401CA3ABCC04C3AB221DB8AD5CBF26 at byte 98289292
# This item is included in the report because it matches --limit.
# Scores: V/M = 0.00
# Time range: 2023-11-25T07:05:35 to 2023-11-25T07:06:43
# Attribute    pct   total     min     max     avg     95%  stddev  median
# ============ === ======= ======= ======= ======= ======= ======= =======
# Count          0     487
# Exec time      7      9s     5ms    55ms    19ms    34ms     9ms    17ms
# Lock time      0   390us       0    10us       0     1us       0     1us
# Rows sent      0       0       0       0       0       0       0       0
# Rows examine   4   4.07M   8.55k   8.55k   8.55k   8.55k       0   8.55k
# Query size     0  46.61k      98      98      98      98       0      98
# String:
# Hosts        isucon1
# Users        isucon
# Query_time distribution
#   1us
#  10us
# 100us
#   1ms  ###########
#  10ms  ################################################################
# 100ms
#    1s
#  10s+
# Tables
#    SHOW TABLE STATUS LIKE 'reservation_slots'\G
#    SHOW CREATE TABLE `reservation_slots`\G
UPDATE reservation_slots SET slot = slot - 1 WHERE start_at >= 1704002400 AND end_at <= 1704063600\G
# Converted for EXPLAIN
# EXPLAIN 
select  slot = slot - 1 from reservation_slots where  start_at >= 1704002400 AND end_at <= 1704063600\G

# Query 4: 7.18 QPS, 0.11x concurrency, ID 0x7F9C0C0BA9473953B723EE16C08655F1 at byte 98178121
# This item is included in the report because it matches --limit.
# Scores: V/M = 0.00
# Time range: 2023-11-25T07:05:35 to 2023-11-25T07:06:43
# Attribute    pct   total     min     max     avg     95%  stddev  median
# ============ === ======= ======= ======= ======= ======= ======= =======
# Count          0     488
# Exec time      6      8s     5ms    47ms    16ms    28ms     7ms    14ms
# Lock time      0   519us       0    48us     1us     1us     2us     1us
# Rows sent      0   4.70k       1      21    9.87   18.53    5.79    9.83
# Rows examine   4   4.08M   8.55k   8.55k   8.55k   8.55k       0   8.55k
# Query size     0  45.75k      96      96      96      96       0      96
# String:
# Hosts        isucon1
# Users        isucon
# Query_time distribution
#   1us
#  10us
# 100us
#   1ms  ###############
#  10ms  ################################################################
# 100ms
#    1s
#  10s+
# Tables
#    SHOW TABLE STATUS LIKE 'reservation_slots'\G
#    SHOW CREATE TABLE `reservation_slots`\G
# EXPLAIN 
SELECT * FROM reservation_slots WHERE start_at >= 1704002400 AND end_at <= 1704063600 FOR UPDATE\G
# *************************** 1. row ***************************
#            id: 1
#   select_type: SIMPLE
#         table: reservation_slots
#    partitions: NULL
#          type: ALL
# possible_keys: NULL
#           key: NULL
#       key_len: NULL
#           ref: NULL
#          rows: 8593
#      filtered: 11.11
#         Extra: Using where

netdata

http://localhost:19993/#menu_services;after=1700895935819;before=1700896015826

pprof

go tool pprof -http=0.0.0.0:1080 http://isucon3/pprof/11250705

saza-ku / isucon13

11250705 #71

isucon1

alp

slow query

explain

netdata

pprof

isucon2

alp

slow query

explain

netdata

pprof

isucon3

alp

slow query

explain

netdata

pprof