zpoline nommu

[thehajime]

for the record:

lmbench (usec)

native	um	um-nommu
select-10	0.2584	28.7245	0.2751
select-100	0.7548	31.3977	0.9887
select-1000	5.7399	60.8596	8.4134
syscall	0.0806	11.4508	0.0780
read	0.1464	19.6901	0.1166
write	0.1110	27.3296	0.1140
stat	1.5114	46.2612	0.4372
open/close	283.9560	101.4579	0.7859
fork+sh	3539.0000	15725.0000	38561.0000
fork+execve	1679.5714	5462.0000	9611.0000

do_getpid bench (nsec)

native	um	um-nommu
getpid	117	24733	83

[github-actions[bot]]

lmbench (usec)

native	um	um-nommu
select-10	0.5388	30.8835	0.2923
select-100	1.6581	28.1535	1.2466
select-1000	12.8734	37.1356	10.7843
syscall	0.1651	27.8988	0.0960
read	0.3208	27.0028	0.1448
write	0.2542	29.3782	0.1294
stat	1.9362	36.1034	0.4800
open/close	3.3007	66.5084	0.8472
fork+sh	1201.3333	15011.0000	42911.0000
fork+execve	519.0455	5338.0000	10488.0000

do_getpid bench (nsec)

native	um	um-nommu
getpid	163	27534	99

[github-actions[bot]]

(after skipping translations on non E flag segments)

lmbench (usec)

native	um	um-nommu
select-10	0.5386	27.0927	0.2804
select-100	1.6715	32.1976	1.2052
select-1000	12.8782	42.9574	10.4321
syscall	0.1649	28.2738	0.1025
read	0.3205	27.1121	0.1371
write	0.2539	29.4618	0.1272
stat	1.9378	37.8954	0.4671
open/close	3.2773	69.2010	0.7973
fork+sh	1115.4000	16156.0000	26312.0000
fork+execve	510.6000	5430.3333	4326.3333

do_getpid bench (nsec)

native	um	um-nommu
getpid	165	27897	103

[github-actions[bot]]

lmbench (usec)

native	um	um-nommu
select-10	0.5375	29.4642	0.2812
select-100	1.6564	27.8601	1.2349
select-1000	12.8655	41.3333	10.7207
syscall	0.1651	26.8792	0.0955
read	0.3205	27.6821	0.1487
write	0.2540	29.4223	0.1346
stat	1.9472	37.2944	0.4524
open/close	3.2041	62.7496	0.8102
fork+sh	1152.0000	14711.0000	25377.0000
fork+execve	534.7143	4890.0000	4219.0000

do_getpid bench (nsec)

native	um	um-nommu
getpid	162	27846	103

[github-actions[bot]]

First attempt with newer alpine (3.20.3), w/ custom build busybox 1.36.1-r32, musl 1.2.5-r5, both nommu enabled.

lmbench (usec)

native	um	um-nommu
select-10	0.5573	26.4045	0.2755
select-100	2.4361	27.3608	1.2215
select-1000	20.5527	39.5185	10.6800
syscall	0.1734	27.8873	0.1030
read	0.3436	27.7672	0.1398
write	0.2861	26.9003	0.1334
stat	1.9257	37.5310	0.4588
open/close	3.8218	65.2532	0.7895
fork+sh	1157.0000	20624.0000	21466.0000
fork+execve	536.3000	4988.0000	4912.3333

do_getpid bench (nsec)

native	um	um-nommu
getpid	174	28693	102

[github-actions[bot]]

lmbench (usec)

native	um	um-nommu
select-10	0.5566	26.9927	0.2751
select-100	2.4032	31.7365	1.2212
select-1000	20.7261	39.6562	10.6739
syscall	0.1734	26.9246	0.0951
read	0.3440	26.9575	0.1449
write	0.2860	28.4418	0.1237
stat	1.9150	37.4208	0.4673
open/close	3.8225	65.1122	0.7816
fork+sh	1156.3000	19572.0000	21651.0000
fork+execve	532.5789	4989.0000	4922.0000

do_getpid bench (nsec)

native	um	um-nommu
getpid	173	25719	102

[github-actions[bot]]

lmbench (usec)

native	um	um-nommu
select-10	0.5559	26.1347	0.2761
select-100	2.3905	31.6509	1.2262
select-1000	20.7743	37.6378	10.6757
syscall	0.1737	26.9071	0.0956
read	0.3442	28.6331	0.1449
write	0.2858	26.2907	0.1250
stat	1.9392	38.8483	0.4604
open/close	3.8270	63.4634	0.7992
fork+sh	1159.2222	18948.0000	21496.0000
fork+execve	537.4737	5748.0000	4923.0000

do_getpid bench (nsec)

native	um	um-nommu
getpid	173	27114	100

[github-actions[bot]]

lmbench (usec)

native	um	um-nommu
select-10	0.5576	27.6407	0.2795
select-100	2.4084	28.0443	1.2574
select-1000	20.4679	37.1763	10.9555
syscall	0.1745	26.6016	0.0961
read	0.3436	28.4830	0.1365
write	0.2862	27.6132	0.1231
stat	1.9232	38.1800	0.5058
open/close	3.8916	74.6701	0.8284
fork+sh	1154.4444	19309.0000	21367.0000
fork+execve	541.0000	5743.5000	4894.6667

do_getpid bench (nsec)

native	um	um-nommu
getpid	173	27625	99