home: minimal

[isabelroses]

No description provided.

[github-actions]

Nix Eval Stats: amaterasu

Metric	Before (mean ± σ)	After (mean ± σ)	Δ	%
cpuTime	18.686 ± 0.206	18.735 ± 0.240	+0.050	+0.3%
envs.bytes	273,738,624 ± 0.000	270,919,112 ± 0.000	-2,819,512	-1.0%
envs.elements	20,474,284 ± 0.000	20,277,996 ± 0.000	-196,288	-1.0%
envs.number	13,743,044 ± 0.000	13,586,893 ± 0.000	-156,151	-1.1%
gc.heapSize	1,292,107,776 ± 0.000	1,325,662,208 ± 0.000	+33,554,432	+2.6%
gc.totalBytes	2,161,727,488 ± 7334.905	2,149,231,024 ± 3885.036	-12,496,464	-0.6%
list.bytes	34,986,008 ± 0.000	34,587,712 ± 0.000	-398,296	-1.1%
list.concats	645,054 ± 0.000	643,179 ± 0.000	-1,875	-0.3%
list.elements	4,373,251 ± 0.000	4,323,464 ± 0.000	-49,787	-1.1%
nrAvoided	15,697,987 ± 0.000	15,556,355 ± 0.000	-141,632	-0.9%
nrFunctionCalls	11,910,544 ± 0.000	11,775,004 ± 0.000	-135,540	-1.1%
nrLookups	7,848,826 ± 0.000	7,758,948 ± 0.000	-89,878	-1.1%
nrOpUpdateValuesCopied	45,738,376 ± 0.000	45,698,071 ± 0.000	-40,305	-0.1%
nrOpUpdates	1,122,983 ± 0.000	1,117,681 ± 0.000	-5,302	-0.5%
nrPrimOpCalls	6,638,158 ± 0.000	6,571,001 ± 0.000	-67,157	-1.0%
nrThunks	19,399,464 ± 0.000	19,225,891 ± 0.000	-173,573	-0.9%
sets.bytes	1,045,167,072 ± 0.000	1,042,371,968 ± 0.000	-2,795,104	-0.3%
sets.elements	63,432,076 ± 0.000	63,280,009 ± 0.000	-152,067	-0.2%
sets.number	3,781,732 ± 0.000	3,736,478 ± 0.000	-45,254	-1.2%
sizes.Attr	16 ± 0.000	16 ± 0.000	0	+0.0%
sizes.Bindings	8 ± 0.000	8 ± 0.000	0	+0.0%
sizes.Env	8 ± 0.000	8 ± 0.000	0	+0.0%
sizes.Value	8 ± 0.000	8 ± 0.000	0	+0.0%
symbols.bytes	1,352,301 ± 0.000	1,311,241 ± 0.000	-41,060	-3.0%
symbols.number	113,285 ± 0.000	110,075 ± 0.000	-3,210	-2.8%
values.bytes	0 ± 0.000	0 ± 0.000	0	N/A
values.number	0 ± 0.000	0 ± 0.000	0	N/A

[isabelroses]

can't seem to reproduce the eval speed improvments that CI seems to get

[github-actions]

Nix Eval Stats

Paired comparison across 7 host(s). Metrics with identical values across all hosts are listed under Unchanged; the rest get a paired t-test (p-value, t-stat).

Unchanged values

metric	value
gc.cycles1	6
sizes.Attr2	16
sizes.Bindings3	8
sizes.Env4	8
sizes.Value5	8

Updated values

metric	mean_before	mean_after	mean_diff	mean_pct_change	p_value	t_stat
time.cpu6	10.7090	10.5115	-0.1975	-1.8637	0.0459	-2.5106
time.gc7	0.8284	0.8314	0.0030	0.4057	0.6388	0.4942
time.gcFraction8	0.0783	0.0801	0.0019	2.3189	0.0021	5.1553
gc.heapSize9	923009024.0000	920612278.8571	-2396745.1429	-0.2232	0.3559	-1.0000
gc.totalBytes10	1345502957.7143	1335140676.5714	-10362281.1429	-0.7741	0.0010	-6.0005
envs.bytes11	170353788.5714	168034238.8571	-2319549.7143	-1.3644	0.0010	-6.0000
list.bytes12	20330526.8571	19993106.2857	-337420.5714	-1.6750	0.0010	-6.0000
sets.bytes13	647602538.2857	645275852.5714	-2326685.7143	-0.3617	0.0010	-6.0000
symbols.bytes14	1275818.5714	1239875.1429	-35943.4286	-2.7971	0.0010	-6.0000
values.bytes15	10332674.2857	10249321.1429	-83353.1429	-0.8101	0.0010	-6.0000
envs.number16	8442162.1429	8313508.7143	-128653.4286	-1.5265	0.0010	-6.0000
nrAvoided17	9316386.4286	9200788.4286	-115598.0000	-1.2483	0.0010	-6.0000
nrExprs18	5434343.5714	5223609.0000	-210734.5714	-3.8054	0.0010	-6.0000
nrFunctionCalls19	7097723.8571	6986219.5714	-111504.2857	-1.5740	0.0010	-6.0000
nrLookups20	4898047.0000	4825866.8571	-72180.1429	-1.4710	0.0010	-6.0000
nrOpUpdateValuesCopied21	27822210.4286	27790758.7143	-31451.7143	-0.1142	0.0010	-6.0000
nrOpUpdates22	717505.4286	713094.4286	-4411.0000	-0.6214	0.0010	-6.0000
nrPrimOpCalls23	3385721.0000	3329536.8571	-56184.1429	-1.6675	0.0010	-6.0000
nrThunks24	11250576.0000	11107205.7143	-143370.2857	-1.2771	0.0010	-6.0000
sets.number25	2668600.7143	2630013.5714	-38587.1429	-1.4513	0.0010	-6.0000
symbols.number26	107972.4286	105166.0000	-2806.4286	-2.5770	0.0010	-5.9999
values.number27	1291584.2857	1281165.1429	-10419.1429	-0.8101	0.0010	-6.0000
envs.elements28	12852061.4286	12690771.1429	-161290.2857	-1.2580	0.0010	-6.0000
list.concats29	374297.5714	372801.7143	-1495.8571	-0.4035	0.0010	-6.0000
list.elements30	2541315.8571	2499138.2857	-42177.5714	-1.6750	0.0010	-6.0000
sets.elements31	39140858.2857	39014734.0000	-126124.2857	-0.3245	0.0010	-6.0000

Footnotes

1. Number of times garbage collection has been performed. ↩

2. Size in bytes of the Attr type. ↩

3. Size in bytes of the Bindings type. ↩

4. Size in bytes of the Env type. ↩

5. Size in bytes of the Value type. ↩

6. Number of seconds of CPU time accounted by the OS to the Nix evaluator process. On UNIX systems, this comes from getrusage(RUSAGE_SELF). ↩

7. Number of seconds of CPU time accounted by the Boehm garbage collector to performing GC. ↩

8. What fraction of the total CPU time is accounted towards performing GC. ↩

9. Size in bytes of the garbage collector heap. ↩

10. Size in bytes of all allocations in the garbage collector. ↩

11. Size in bytes of all Env objects allocated by the Nix evaluator. ↩

12. Size in bytes of all lists allocated by the Nix evaluator. ↩

13. Size in bytes of all attrsets allocated by the Nix evaluator. ↩

14. Size in bytes of all items in the Nix evaluator symbol table. ↩

15. Size in bytes of all values allocated by the Nix evaluator. ↩

16. The count of all Env objects allocated. ↩

17. The number of thunks avoided being created. ↩

18. The number of expression objects ever created. ↩

19. The number of function calls ever made. ↩

20. The number of lookups into an attrset ever made. ↩

21. The number of attrset values copied in the process of merging attrsets. ↩

22. The number of attrset merge operations (//) performed. ↩

23. The number of function calls to primops (Nix builtins) ever made. ↩

24. The number of thunks ever made. ↩

25. The number of attrsets ever made. ↩

26. The number of symbols ever added to the symbol table. ↩

27. The number of values ever made. ↩

28. The number of values contained within an Env object. ↩

29. The number of list concatenation operations (++) performed. ↩

30. The number of values contained within a list. ↩

31. The number of values contained within an attrset. ↩