anchor/bench/STACK_MEMORY.md

Stack Memory

All notable changes in stack memory usage will be documented in this file.

The changes are calculated by comparing the current results with the last version's results. Increase in usage is shown with 🔴 and decrease is shown with 🟢.

The programs and their tests are located in /tests/bench.

Note Results documented in this file are autogenerated. Running the tests will update the current results when necessary, manually editing the results should be avoided.

Warning Results may vary depending on Solana version.

[Unreleased]

Solana version: 1.17.0

Instruction	Stack Memory	+/-
account_info1	272	🟢 -56 (17.07%)
account_info2	320	🟢 -56 (14.89%)
account_info4	416	🟢 -144 (25.71%)
account_info8	608	🟢 -120 (16.48%)
account_empty_init1	400	🟢 -192 (32.43%)
account_empty_init2	480	🟢 -80 (14.29%)
account_empty_init4	528	🟢 -104 (16.46%)
account_empty_init8	720	🟢 -104 (12.62%)
account_empty1	272	🟢 -48 (15.00%)
account_empty2	320	🟢 -48 (13.04%)
account_empty4	416	🟢 -136 (24.64%)
account_empty8	608	🟢 -120 (16.48%)
account_sized_init1	408	🟢 -192 (32.00%)
account_sized_init2	496	🟢 -56 (10.14%)
account_sized_init4	560	🟢 -104 (15.66%)
account_sized_init8	784	🟢 -104 (11.71%)
account_sized1	280	🟢 -48 (14.63%)
account_sized2	336	🟢 -56 (14.29%)
account_sized4	448	🟢 -120 (21.13%)
account_sized8	672	🟢 -120 (15.15%)
account_unsized_init1	424	🟢 -200 (32.05%)
account_unsized_init2	528	🟢 -56 (9.59%)
account_unsized_init4	624	🟢 -104 (14.29%)
account_unsized_init8	912	🟢 -104 (10.24%)
account_unsized1	296	🟢 -48 (13.95%)
account_unsized2	368	🟢 -88 (19.30%)
account_unsized4	512	🟢 -120 (18.99%)
account_unsized8	800	🟢 -120 (13.04%)
boxed_account_empty_init1	360	🟢 -192 (34.78%)
boxed_account_empty_init2	400	-
boxed_account_empty_init4	368	🟢 -64 (14.81%)
boxed_account_empty_init8	400	🟢 -96 (19.35%)
boxed_account_empty1	232	🟢 -88 (27.50%)
boxed_account_empty2	240	🟢 -80 (25.00%)
boxed_account_empty4	256	🟢 -64 (20.00%)
boxed_account_empty8	288	🟢 -48 (14.29%)
boxed_account_sized_init1	360	🟢 -192 (34.78%)
boxed_account_sized_init2	400	-
boxed_account_sized_init4	368	🟢 -64 (14.81%)
boxed_account_sized_init8	400	🟢 -96 (19.35%)
boxed_account_sized1	232	🟢 -88 (27.50%)
boxed_account_sized2	240	🟢 -80 (25.00%)
boxed_account_sized4	256	🟢 -64 (20.00%)
boxed_account_sized8	288	🟢 -48 (14.29%)
boxed_account_unsized_init1	360	🟢 -192 (34.78%)
boxed_account_unsized_init2	400	-
boxed_account_unsized_init4	368	🟢 -64 (14.81%)
boxed_account_unsized_init8	400	🟢 -96 (19.35%)
boxed_account_unsized1	232	🟢 -88 (27.50%)
boxed_account_unsized2	240	🟢 -80 (25.00%)
boxed_account_unsized4	256	🟢 -64 (20.00%)
boxed_account_unsized8	288	🟢 -48 (14.29%)
boxed_interface_account_mint1	232	🟢 -88 (27.50%)
boxed_interface_account_mint2	240	🟢 -80 (25.00%)
boxed_interface_account_mint4	256	🟢 -64 (20.00%)
boxed_interface_account_mint8	288	🟢 -48 (14.29%)
boxed_interface_account_token1	232	🟢 -88 (27.50%)
boxed_interface_account_token2	240	🟢 -80 (25.00%)
boxed_interface_account_token4	256	🟢 -64 (20.00%)
boxed_interface_account_token8	288	🟢 -48 (14.29%)
interface_account_mint1	392	🟢 -112 (22.22%)
interface_account_mint2	560	🟢 -120 (17.65%)
interface_account_mint4	896	🟢 -120 (11.81%)
interface_account_mint8	1,568	🟢 -120 (7.11%)
interface_account_token1	480	🟢 -200 (29.41%)
interface_account_token2	736	🟢 -120 (14.02%)
interface_account_token4	1,248	🟢 -120 (8.77%)
interface1	272	🟢 -48 (15.00%)
interface2	320	🟢 -48 (13.04%)
interface4	416	🟢 -136 (24.64%)
interface8	608	🟢 -120 (16.48%)
program1	272	🟢 -48 (15.00%)
program2	320	🟢 -48 (13.04%)
program4	416	🟢 -136 (24.64%)
program8	608	🟢 -120 (16.48%)
signer1	272	🟢 -56 (17.07%)
signer2	320	🟢 -56 (14.89%)
signer4	416	🟢 -144 (25.71%)
signer8	608	🟢 -120 (16.48%)
system_account1	272	🟢 -56 (17.07%)
system_account2	320	🟢 -56 (14.89%)
system_account4	416	🟢 -144 (25.71%)
system_account8	608	🟢 -120 (16.48%)
unchecked_account1	272	🟢 -56 (17.07%)
unchecked_account2	320	🟢 -56 (14.89%)
unchecked_account4	416	🟢 -144 (25.71%)
unchecked_account8	608	🟢 -120 (16.48%)

Notable changes

• Box the anchor_lang::Result error variants (#2600).

---

[0.28.0]

Solana version: 1.16.0

Instruction	Stack Memory	+/-
account_info1	328	🔴 +80 (32.26%)
account_info2	376	🟢 -16 (4.08%)
account_info4	560	🔴 +48 (9.38%)
account_info8	728	🟢 -168 (18.75%)
account_empty_init1	592	🔴 +8 (1.37%)
account_empty_init2	560	🔴 +48 (9.38%)
account_empty_init4	632	🟢 -72 (10.23%)
account_empty_init8	824	🟢 -264 (24.26%)
account_empty1	320	🔴 +120 (60.00%)
account_empty2	368	🔴 +24 (6.98%)
account_empty4	552	🔴 +88 (18.97%)
account_empty8	728	🟢 -120 (14.15%)
account_sized_init1	600	🔴 +8 (1.35%)
account_sized_init2	552	🔴 +8 (1.47%)
account_sized_init4	664	🟢 -104 (13.54%)
account_sized_init8	888	🟢 -328 (26.97%)
account_sized1	328	🔴 +128 (64.00%)
account_sized2	392	🔴 +32 (8.89%)
account_sized4	568	🔴 +40 (7.58%)
account_sized8	792	🟢 -184 (18.85%)
account_unsized_init1	624	🔴 +16 (2.63%)
account_unsized_init2	584	🟢 -24 (3.95%)
account_unsized_init4	728	🟢 -168 (18.75%)
account_unsized_init8	1,016	🟢 -456 (30.98%)
account_unsized1	344	🔴 +168 (95.45%)
account_unsized2	456	🔴 +64 (16.33%)
account_unsized4	632	🟢 -24 (3.66%)
account_unsized8	920	🟢 -312 (25.32%)
boxed_account_empty_init1	552	🔴 +8 (1.47%)
boxed_account_empty_init2	400	🟢 -8 (1.96%)
boxed_account_empty_init4	432	🔴 +8 (1.89%)
boxed_account_empty_init8	496	🔴 +40 (8.77%)
boxed_account_empty1	320	🔴 +80 (33.33%)
boxed_account_empty2	320	🔴 +72 (29.03%)
boxed_account_empty4	320	🔴 +40 (14.29%)
boxed_account_empty8	336	🔴 +24 (7.69%)
boxed_account_sized_init1	552	🔴 +8 (1.47%)
boxed_account_sized_init2	400	🟢 -8 (1.96%)
boxed_account_sized_init4	432	🔴 +8 (1.89%)
boxed_account_sized_init8	496	🔴 +40 (8.77%)
boxed_account_sized1	320	🔴 +80 (33.33%)
boxed_account_sized2	320	🔴 +72 (29.03%)
boxed_account_sized4	320	🔴 +40 (14.29%)
boxed_account_sized8	336	🔴 +24 (7.69%)
boxed_account_unsized_init1	552	🔴 +8 (1.47%)
boxed_account_unsized_init2	400	🟢 -8 (1.96%)
boxed_account_unsized_init4	432	🔴 +8 (1.89%)
boxed_account_unsized_init8	496	🔴 +40 (8.77%)
boxed_account_unsized1	320	🔴 +72 (29.03%)
boxed_account_unsized2	320	🔴 +72 (29.03%)
boxed_account_unsized4	320	🔴 +40 (14.29%)
boxed_account_unsized8	336	🔴 +24 (7.69%)
boxed_interface_account_mint1	320	🔴 +80 (33.33%)
boxed_interface_account_mint2	320	🔴 +72 (29.03%)
boxed_interface_account_mint4	320	🔴 +40 (14.29%)
boxed_interface_account_mint8	336	🔴 +24 (7.69%)
boxed_interface_account_token1	320	🔴 +80 (33.33%)
boxed_interface_account_token2	320	🔴 +72 (29.03%)
boxed_interface_account_token4	320	🔴 +40 (14.29%)
boxed_interface_account_token8	336	🔴 +24 (7.69%)
interface_account_mint1	504	🔴 +296 (142.31%)
interface_account_mint2	680	🟢 -72 (9.57%)
interface_account_mint4	1,016	🟢 -408 (28.65%)
interface_account_mint8	1,688	🟢 -1,080 (39.02%)
interface_account_token1	680	🔴 +416 (157.58%)
interface_account_token2	856	🟢 -248 (22.46%)
interface_account_token4	1,368	🟢 -760 (35.71%)
interface1	320	🔴 +120 (60.00%)
interface2	368	🔴 +24 (6.98%)
interface4	552	🔴 +88 (18.97%)
interface8	728	🟢 -120 (14.15%)
program1	320	🔴 +120 (60.00%)
program2	368	🔴 +24 (6.98%)
program4	552	🔴 +88 (18.97%)
program8	728	🟢 -120 (14.15%)
signer1	328	🔴 +80 (32.26%)
signer2	376	🟢 -16 (4.08%)
signer4	560	🔴 +48 (9.38%)
signer8	728	🟢 -168 (18.75%)
system_account1	328	🔴 +80 (32.26%)
system_account2	376	🟢 -16 (4.08%)
system_account4	560	🔴 +48 (9.38%)
system_account8	728	🟢 -168 (18.75%)
unchecked_account1	328	🔴 +80 (32.26%)
unchecked_account2	376	🟢 -16 (4.08%)
unchecked_account4	560	🔴 +48 (9.38%)
unchecked_account8	728	🟢 -168 (18.75%)

Notable changes

• Upgrading Solana to 1.16. The difference in stack memory usage between 0.27.0 and 0.28.0 is the direct result of upgrading Solana version(both build tools and crates) (#2512).

---

[0.27.0]

Solana version: 1.14.16

Instruction	Stack Memory	+/-
account_info1	248	N/A
account_info2	392	N/A
account_info4	512	N/A
account_info8	896	N/A
account_empty_init1	584	N/A
account_empty_init2	512	N/A
account_empty_init4	704	N/A
account_empty_init8	1,088	N/A
account_empty1	200	N/A
account_empty2	344	N/A
account_empty4	464	N/A
account_empty8	848	N/A
account_sized_init1	592	N/A
account_sized_init2	544	N/A
account_sized_init4	768	N/A
account_sized_init8	1,216	N/A
account_sized1	200	N/A
account_sized2	360	N/A
account_sized4	528	N/A
account_sized8	976	N/A
account_unsized_init1	608	N/A
account_unsized_init2	608	N/A
account_unsized_init4	896	N/A
account_unsized_init8	1,472	N/A
account_unsized1	176	N/A
account_unsized2	392	N/A
account_unsized4	656	N/A
account_unsized8	1,232	N/A
boxed_account_empty_init1	544	N/A
boxed_account_empty_init2	408	N/A
boxed_account_empty_init4	424	N/A
boxed_account_empty_init8	456	N/A
boxed_account_empty1	240	N/A
boxed_account_empty2	248	N/A
boxed_account_empty4	280	N/A
boxed_account_empty8	312	N/A
boxed_account_sized_init1	544	N/A
boxed_account_sized_init2	408	N/A
boxed_account_sized_init4	424	N/A
boxed_account_sized_init8	456	N/A
boxed_account_sized1	240	N/A
boxed_account_sized2	248	N/A
boxed_account_sized4	280	N/A
boxed_account_sized8	312	N/A
boxed_account_unsized_init1	544	N/A
boxed_account_unsized_init2	408	N/A
boxed_account_unsized_init4	424	N/A
boxed_account_unsized_init8	456	N/A
boxed_account_unsized1	248	N/A
boxed_account_unsized2	248	N/A
boxed_account_unsized4	280	N/A
boxed_account_unsized8	312	N/A
boxed_interface_account_mint1	240	N/A
boxed_interface_account_mint2	248	N/A
boxed_interface_account_mint4	280	N/A
boxed_interface_account_mint8	312	N/A
boxed_interface_account_token1	240	N/A
boxed_interface_account_token2	248	N/A
boxed_interface_account_token4	280	N/A
boxed_interface_account_token8	312	N/A
interface_account_mint1	208	N/A
interface_account_mint2	752	N/A
interface_account_mint4	1,424	N/A
interface_account_mint8	2,768	N/A
interface_account_token1	264	N/A
interface_account_token2	1,104	N/A
interface_account_token4	2,128	N/A
interface1	200	N/A
interface2	344	N/A
interface4	464	N/A
interface8	848	N/A
program1	200	N/A
program2	344	N/A
program4	464	N/A
program8	848	N/A
signer1	248	N/A
signer2	392	N/A
signer4	512	N/A
signer8	896	N/A
system_account1	248	N/A
system_account2	392	N/A
system_account4	512	N/A
system_account8	896	N/A
unchecked_account1	248	N/A
unchecked_account2	392	N/A
unchecked_account4	512	N/A
unchecked_account8	896	N/A

---