Percentage of allocs less than 48 bytes: 90.7

All allocations
# A tibble: 22 × 4
   obj_len     n n_less_than percent
     <int> <int>       <int>   <dbl>
 1       9  3042        3042    2.74
 2      10    73        3115    2.81
 3      11  1002        4117    3.71
 4      12     9        4126    3.72
 5      13     1        4127    3.72
 6      16  7867       11994   10.8 
 7      18 17139       29133   26.3 
 8      19   807       29940   27.0 
 9      20  1502       31442   28.4 
10      21   711       32153   29.0 
11      22   519       32672   29.5 
12      23   580       33252   30.0 
13      24 29975       63227   57.0 
14      25  2568       65795   59.3 
15      26  1709       67504   60.9 
16      27   184       67688   61.0 
17      28   159       67847   61.2 
18      29   157       68004   61.3 
19      30   122       68126   61.4 
20      31   104       68230   61.5 
21      32  5307       73537   66.3 
22      33   341       73878   66.6 
# A tibble: 5 × 4
  obj_len     n n_less_than percent
    <int> <int>       <int>   <dbl>
1    1024     8      110865    100.
2    1032     6      110871    100.
3    1041     1      110872    100.
4    4096     2      110874    100.
5    4113     2      110876    100 

Common Sizes
# A tibble: 8 × 2
  obj_len     n
    <int> <int>
1      24 29975
2      48 21585
3      18 17139
4      16  7867
5      32  5307
6      40  4238
7      64  3418
8       9  3042

    110,876 total allocations, total bytes = 3,946,757

Typed allocations
# A tibble: 20 × 3
   func_name                                                           n percent
   <chr>                                                           <int>   <dbl>
 1 List<BigStr*>* Alloc<List<BigStr*>>()                            6457   12.1 
 2 runtime_asdl::Piece* Alloc<runtime_asdl::Piece, BigStr*, bool&…  4353    8.16
 3 List<runtime_asdl::part_value_t*>* Alloc<List<runtime_asdl::pa…  3518    6.59
 4 runtime_asdl::CommandStatus* Alloc<runtime_asdl::CommandStatus…  2971    5.57
 5 value_asdl::value__Bool* Alloc<value_asdl::value__Bool, bool&>…  2738    5.13
 6 Tuple2<runtime_asdl::span_e, int>* Alloc<Tuple2<runtime_asdl::…  2733    5.12
 7 runtime_asdl::Piece* Alloc<runtime_asdl::Piece, BigStr*&, bool…  1925    3.61
 8 List<syntax_asdl::CompoundWord*>* Alloc<List<syntax_asdl::Comp…  1659    3.11
 9 value_asdl::value__Str* Alloc<value_asdl::value__Str, BigStr*>…  1647    3.09
10 List<int>* Alloc<List<int>>()                                    1080    2.02
11 runtime_asdl::VarSubState* Alloc<runtime_asdl::VarSubState, bo…  1002    1.88
12 List<runtime_asdl::Piece*>* Alloc<List<runtime_asdl::Piece*>>()   956    1.79
13 runtime_asdl::Piece* Alloc<runtime_asdl::Piece, BigStr*&, bool…   925    1.73
14 Dict<BigStr*, value_asdl::value_t*>* Alloc<Dict<BigStr*, value…   908    1.70
15 Dict<BigStr*, args::_Action*>* Alloc<Dict<BigStr*, args::_Acti…   906    1.70
16 List<Tuple2<BigStr*, bool>*>* Alloc<List<Tuple2<BigStr*, bool>…   906    1.70
17 args::SetToInt* Alloc<args::SetToInt, BigStr*>(BigStr*&&)         901    1.69
18 value_asdl::value__Int* Alloc<value_asdl::value__Int, int&>(in…   901    1.69
19 value_asdl::value__Str* Alloc<value_asdl::value__Str, BigStr*&…   871    1.63
20 args::SetToString* Alloc<args::SetToString, BigStr*, bool, Lis…   766    1.44
# A tibble: 5 × 3
  func_name                                                            n percent
  <chr>                                                            <int>   <dbl>
1 value_asdl::value__List* Alloc<value_asdl::value__List, List<va…     1 0.00187
2 value_asdl::value__List* Alloc<value_asdl::value__List, List<va…     1 0.00187
3 word_eval::CompletionWordEvaluator* Alloc<word_eval::Completion…     1 0.00187
4 word_eval::NormalWordEvaluator* Alloc<word_eval::NormalWordEval…     1 0.00187
5 word_eval::TildeEvaluator* Alloc<word_eval::TildeEvaluator, sta…     1 0.00187

53,368 typed allocs, including 18,242 List<T>
48.13% of allocs are typed

Str - NewStr() and OverAllocatedStr()
# A tibble: 16 × 4
   str_len     n n_less_than percent
     <int> <int>       <int>   <dbl>
 1       0   275         275   0.954
 2       1 17139       17414  60.4  
 3       2   807       18221  63.2  
 4       3  1429       19650  68.2  
 5       4   711       20361  70.6  
 6       5   519       20880  72.4  
 7       6   580       21460  74.4  
 8       7   493       21953  76.2  
 9       8  2568       24521  85.1  
10       9  1709       26230  91.0  
11      10   184       26414  91.6  
12      11   152       26566  92.2  
13      12   157       26723  92.7  
14      13   122       26845  93.1  
15      14   104       26949  93.5  
16      15    77       27026  93.7  
# A tibble: 5 × 4
  str_len     n n_less_than percent
    <int> <int>       <int>   <dbl>
1     160     1       28823    100.
2     202     1       28824    100.
3     255     1       28825    100.
4    1024     1       28826    100.
5    4096     2       28828    100 

28,828 string allocations, total length = 149,629, total bytes = 639,705

26.00% of allocs are strings
16.21% of bytes are strings

NewSlab()
  Lengths
# A tibble: 6 × 4
  slab_len     n n_less_than percent
     <int> <int>       <int>   <dbl>
1        5 16803       16803    58.0
2        7  3043       19846    68.5
3        8  1530       21376    73.8
4       10  1156       22532    77.8
5       14   349       22881    79.0
6       15  2423       25304    87.4
# A tibble: 5 × 4
  slab_len     n n_less_than percent
     <int> <int>       <int>   <dbl>
1      127    11       28910    99.8
2      128    36       28946   100. 
3      254     1       28947   100. 
4      256     6       28953   100. 
5     1022     2       28955   100  

  Slab Types
# A tibble: 6 × 2
  func_name                                                                    n
  <chr>                                                                    <int>
1 Slab<BigStr*>* NewSlab<BigStr*>(int)                                      9574
2 Slab<int>* NewSlab<int>(int)                                              5675
3 Slab<runtime_asdl::part_value_t*>* NewSlab<runtime_asdl::part_value_t*>…  4129
4 Slab<value_asdl::value_t*>* NewSlab<value_asdl::value_t*>(int)            2430
5 Slab<syntax_asdl::CompoundWord*>* NewSlab<syntax_asdl::CompoundWord*>(i…  1778
6 Slab<runtime_asdl::Piece*>* NewSlab<runtime_asdl::Piece*>(int)             956
# A tibble: 5 × 2
  func_name                                                                    n
  <chr>                                                                    <int>
1 Slab<syntax_asdl::printf_part_t*>* NewSlab<syntax_asdl::printf_part_t*>…     1
2 Slab<value_asdl::regex_match_t*>* NewSlab<value_asdl::regex_match_t*>(i…     1
3 Slab<value_asdl::value__Dict*>* NewSlab<value_asdl::value__Dict*>(int)       1
4 Slab<value_asdl::value__Proc*>* NewSlab<value_asdl::value__Proc*>(int)       1
5 Slab<vm::_AssignBuiltin*>* NewSlab<vm::_AssignBuiltin*>(int)                 1

28,955 slabs, total items = 300,233
26.11% of allocs are slabs

::reserve(int n)

  Num Items
# A tibble: 15 × 4
   num_items     n n_less_than  percent
       <int> <int>       <int>    <dbl>
 1         0     5           5  0.00762
 2         1 18676       18681 28.5    
 3         2  7001       25682 39.1    
 4         3  5722       31404 47.9    
 5         4  3314       34718 52.9    
 6         5  3244       37962 57.9    
 7         6  3352       41314 63.0    
 8         7  2515       43829 66.8    
 9         8  3136       46965 71.6    
10         9  1799       48764 74.3    
11        10  1998       50762 77.4    
12        11  1002       51764 78.9    
13        12   857       52621 80.2    
14        13   829       53450 81.5    
15        14   740       54190 82.6    
# A tibble: 5 × 4
  num_items     n n_less_than percent
      <int> <int>       <int>   <dbl>
1        77    15       65590    100.
2        78     8       65598    100.
3       111     2       65600    100.
4       179     1       65601    100.
5      1022     2       65603    100 

65,603 reserve() calls, total items = 616,832

Untyped: 110,876
Typed + Str + Slab: 111,151