with patch

| Initial notmuch new | 519.77 | 403.60 | 111.33 | 274212 | 0/15964240 |
| Initial notmuch new | 521.81 | 405.90 | 111.16 | 273992 | 0/15876448 |
| Initial notmuch new | 522.43 | 406.40 | 111.85 | 273936 | 0/16188560 |
| Initial notmuch new | 523.08 | 405.39 | 112.02 | 274152 | 0/15871216 |
| Initial notmuch new | 523.58 | 407.64 | 112.15 | 274100 | 0/16211056 |
|                     | 522.13 |        |        |        |            |
#+TBLFM: @6$2=vmean(@1..@5);f2

| new (52374 cp) | 170.72 | 124.50 | 44.63 | 114224 | 0/3817216 |
| new (52374 cp) | 170.76 | 125.47 | 43.85 | 114360 | 0/4099808 |
| new (52374 cp) | 170.79 | 124.49 | 44.63 | 114560 | 0/4075616 |
| new (52374 cp) | 171.03 | 125.37 | 44.34 | 114384 | 0/4096496 |
| new (52374 cp) | 172.09 | 126.18 | 44.75 | 114548 | 0/4073552 |
|                | 171.08 |        |       |        |           |
#+TBLFM: @6$2=vmean(@1..@5);f2

| new (52374 mv) | 316.30 | 219.89 | 95.42 | 146136 | 0/4611440 |
| new (52374 mv) | 316.75 | 219.96 | 95.79 | 146496 | 0/4866064 |
| new (52374 mv) | 317.27 | 221.69 | 94.55 | 146424 | 0/4864352 |
| new (52374 mv) | 318.53 | 222.16 | 95.60 | 146368 | 0/5056016 |
| new (52374 mv) | 318.98 | 222.26 | 95.94 | 146332 | 0/4854864 |
|                | 317.57 |        |       |        |           |
#+TBLFM: @6$2=vmean(@1..@5);f2

| new (52374 mv back) | 312.67 | 217.23 | 94.55 | 147476 | 0/4986256 |
| new (52374 mv back) | 315.98 | 219.54 | 95.64 | 146796 | 0/4766496 |
| new (52374 mv back) | 316.73 | 220.40 | 95.33 | 146760 | 0/5034928 |
| new (52374 mv back) | 318.88 | 222.51 | 95.31 | 146764 | 0/5063728 |
| new (52374 mv back) | 319.39 | 221.87 | 96.65 | 146944 | 0/4969296 |
|                     | 316.73 |        |       |        |           |
#+TBLFM: @6$2=vmean(@1..@5);f2


----------------------------------------------------------------------

without patch:

| Initial notmuch new | 516.03 | 401.91 | 109.94 | 284668 | 0/14725200 |
| Initial notmuch new | 517.58 | 404.56 | 110.22 | 284608 | 0/15282160 |
| Initial notmuch new | 517.73 | 403.06 | 110.61 | 284648 | 0/14723776 |
| Initial notmuch new | 518.28 | 402.97 | 111.69 | 284836 | 0/14991824 |
| Initial notmuch new | 518.81 | 405.03 | 110.53 | 284696 | 0/14964736 |
|                     | 517.69 |        |        |        |            |
#+TBLFM: @6$2=vmean(@1..@5);f2

| new (52374 cp) | 169.27 | 124.51 | 43.71 | 114500 | 0/3946928 |
| new (52374 cp) | 169.92 | 125.07 | 43.83 | 114476 | 0/3946896 |
| new (52374 cp) | 170.49 | 125.64 | 43.84 | 114380 | 0/3948064 |
| new (52374 cp) | 170.95 | 125.16 | 44.57 | 114384 | 0/3688016 |
| new (52374 cp) | 171.15 | 125.01 | 44.42 | 114472 | 0/3970096 |
|                | 170.36 |        |       |        |           |
#+TBLFM: @6$2=vmean(@1..@5);f2


| new (52374 mv) | 311.78 | 217.74 | 93.29 | 146456 | 8/4774576 |
| new (52374 mv) | 312.24 | 217.13 | 93.96 | 146492 | 0/4772608 |
| new (52374 mv) | 313.10 | 217.43 | 94.61 | 146108 | 0/4980176 |
| new (52374 mv) | 314.22 | 218.72 | 94.45 | 146276 | 0/4761712 |
| new (52374 mv) | 314.48 | 218.67 | 94.55 | 146560 | 0/4774288 |
|                | 313.16 |        |       |        |           |
#+TBLFM: @6$2=vmean(@1..@5);f2

| new (52374 mv back) | 312.88 | 219.64 | 92.07 | 147064 | 0/4785104 |
| new (52374 mv back) | 313.70 | 218.13 | 93.98 | 147172 | 0/4753408 |
| new (52374 mv back) | 314.39 | 220.18 | 93.40 | 147288 | 0/4832464 |
| new (52374 mv back) | 315.64 | 219.17 | 95.49 | 147176 | 0/4943408 |
| new (52374 mv back) | 319.43 | 222.46 | 96.09 | 146780 | 0/4731808 |
|                     | 315.21 |        |       |        |           |
#+TBLFM: @6$2=vmean(@1..@5);f2


|         | Before |  After | slowdown % |
| initial | 517.69 | 522.13 |        0.9 |
| mv      | 313.16 | 317.57 |        1.4 |
| mv back | 315.21 | 316.73 |        0.5 |
| cp      | 170.36 | 171.08 |        0.4 |
#+TBLFM: $4=100*($3/$2-1);f1