>
> I have tried to run libmicro-0.4.0 in XVM Guest,
> but it takes very very long time to finish some
> workloads, like following:
>
> Running: pthread_8 for 0.52335 seconds
> Running: pthread_32 for 99.42079 seconds
> Running: pthread_128 for 709.45210 seconds
> Running: pthread_512 for 2173.69252 seconds
> Running: fork_10 for 450.65546 seconds
> Running: fork_100 for 2422.17060 seconds
> Running: fork_1000 for 12677.38952 seconds
> Running: exit_10 for 479.75481 seconds
> Running: exit_100 for 5319.76236 seconds
> Running: exit_1000 for 11960.19162 seconds
Yep, these number look really bad...
> This performance is unacceptable. Does
> anyone run libmicro in XVM guest and meet
> similar performance issue?
Not yet.
I just tested...
Box #1, AMD Athlon(tm) 64 X2 Dual Core Processor 6400+, 8GB memory
Metal, 64-bit snv_89_jk:
Running: pthread_8 for 0.03313 seconds
Running: pthread_32 for 0.16763 seconds
Running: pthread_128 for 0.85011 seconds
Running: pthread_512 for 3.54108 seconds
Running: fork_10 for 0.96588 seconds
Running: fork_100 for 4.64858 seconds
Running: fork_1000 for 26.34765 seconds
Running: exit_10 for 0.95890 seconds
Running: exit_100 for 9.20730 seconds
Running: exit_1000 for 24.42260 seconds
Running: exit_10_nolibc for 0.87233 seconds
Running: exec for 1.64558 seconds
Running: system for 0.29083 seconds
64-bit xen 3.1.2, 64-bit snv_89_jk dom0:
Running: pthread_8 for 0.07088 seconds
Running: pthread_32 for 0.37521 seconds
Running: pthread_128 for 1.77242 seconds
Running: pthread_512 for 7.45081 seconds
Running: fork_10 for 2.34170 seconds
Running: fork_100 for 11.30274 seconds
Running: fork_1000 for 59.89658 seconds
Running: exit_10 for 2.37156 seconds
Running: exit_100 for 22.60985 seconds
Running: exit_1000 for 59.26271 seconds
Running: exit_10_nolibc for 2.20487 seconds
Running: exec for 3.74100 seconds
Running: system for 0.58775 seconds
64-bit xen 3.1.2, 64-bit snv_89_jk dom0, 64-bit snv_79_jk PV domU:
Running: pthread_8 for 0.06508 seconds
Running: pthread_32 for 0.38477 seconds
Running: pthread_128 for 2.37908 seconds
Running: pthread_512 for 10.55652 seconds
Running: fork_10 for 2.35764 seconds
Running: fork_100 for 12.30732 seconds
Running: fork_1000 for 65.83688 seconds
Running: exit_10 for 2.43565 seconds
Running: exit_100 for 24.66313 seconds
Running: exit_1000 for 65.25513 seconds
Running: exit_10_nolibc for 2.20230 seconds
Running: exec for 2.96338 seconds
Running: system for 0.37897 seconds
32-bit xen 3.1.2, 32-bit snv_89_jk dom0:
Running: pthread_8 for 0.08169 seconds
Running: pthread_32 for 0.40919 seconds
Running: pthread_128 for 1.93781 seconds
Running: pthread_512 for 7.91462 seconds
Running: fork_10 for 5.93390 seconds
Running: fork_100 for 29.17303 seconds
Running: fork_1000 for 150.23701 seconds
Running: exit_10 for 5.93749 seconds
Running: exit_100 for 57.74059 seconds
Running: exit_1000 for 150.18952 seconds
Running: exit_10_nolibc for 6.03767 seconds
Running: exec for 9.41334 seconds
Running: system for 1.18549 seconds
32-bit xen 3.1.2, 32-bit snv_89_jk dom0, 32-bit snv_79_jk PV domU:
Running: pthread_8 for 0.04871 seconds
Running: pthread_32 for 0.34750 seconds
Running: pthread_128 for 1.95965 seconds
Running: pthread_512 for 8.54885 seconds
Running: fork_10 for 10.86304 seconds
Running: fork_100 for 49.61916 seconds
Running: fork_1000 for 268.37711 seconds
Running: exit_10 for 12.75652 seconds
Running: exit_100 for 103.24694 seconds
Running: exit_1000 for 265.21563 seconds
Running: exit_10_nolibc for 11.75072 seconds
Running: exec for 9.49524 seconds
Running: system for 0.75156 seconds
- xVM / xen + dom0 is slower than metal
- 32-bit xVM is slower than 64-bit xVM
- 32-bit domU is slower than dom0
(but that does not happen in the 64-bit case)
Box #2, Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz, 8GB memory
is running xen 3.2.0 and a 32-bit gentoo linux dom0
32-bit xen 3.2, PV solaris-domU
Running: pthread_8 for 0.07845 seconds
Running: pthread_32 for 0.56077 seconds
Running: pthread_128 for 2.83015 seconds
Running: pthread_512 for 13.30005 seconds
Running: fork_10 for 3.59635 seconds
Running: fork_100 for 17.53722 seconds
Running: fork_1000 for 92.09840 seconds
Running: exit_10 for 3.63996 seconds
Running: exit_100 for 34.96151 seconds
Running: exit_1000 for 92.49952 seconds
Running: exit_10_nolibc for 3.27794 seconds
Running: exec for 6.22332 seconds
Running: system for 0.74665 seconds
32-bit xen 3.2, PV gentoo domU
Running: pthread_8 for 0.04229 seconds
Running: pthread_32 for 0.20588 seconds
Running: pthread_128 for 0.90911 seconds
Running: pthread_512pthread_create: Cannot allocate memory
...
for 3.35929 seconds
Running: fork_10 for 0.66098 seconds
Running: fork_100 for 3.59144 seconds
Running: fork_1000 for 21.62967 seconds
Running: exit_10 for 0.64355 seconds
Running: exit_100 for 6.92005 seconds
Running: exit_1000 for 20.78521 seconds
Running: exit_10_nolibc for 0.53173 seconds
Running: exec for 1.18908 seconds
Running: system for 0.34060 seconds
linux domU fork / exec performancs is better than Solaris
domU fork / exec performance
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