Re: Faster StrNCpy
От | Tom Lane |
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Тема | Re: Faster StrNCpy |
Дата | |
Msg-id | 14222.1159819568@sss.pgh.pa.us обсуждение исходный текст |
Ответ на | Re: Faster StrNCpy ("Sergey E. Koposov" <math@sai.msu.ru>) |
Ответы |
Re: Faster StrNCpy
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Список | pgsql-hackers |
"Sergey E. Koposov" <math@sai.msu.ru> writes: > Just the test on IA64 (Itanium2, 1.6Ghz, 8Gb memory). The results seem to > be quite different: What libc are you using exactly? Can you try it with the unrolled strlcpy I posted? In glibc-2.4.90, there seem to be out-of-line assembly code implementations of strncpy for: sparc64 sparc32 s390x s390 alpha ia64 and an inlined assembler version for i386. So the x86_64 case is nearly the only popular architecture that doesn't seem to have a hand-hacked implementation ... which throws some doubt on Mark's and my results as possibly not being very representative. regards, tom lane
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