Messages in this thread | | | From | KOSAKI Motohiro <> | Subject | Re: [PATCH, RESEND2] getrusage: fill ru_maxrss value | Date | Wed, 17 Dec 2008 21:03:27 +0900 (JST) |
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> > > This patch makes ->ru_maxrss value in struct rusage filled accordingly to > > > rss hiwater mark. This struct is filled as a parameter to > > > getrusage syscall. ->ru_maxrss value is set to pages which might be correct > > > as "time" application converts it to KBs. > > > > Why? > > if kernel convert to KB, glibc don't need any change. > Where exactly glibc is working with this as KBs? I can't find that place. > > I looked into sources of time util and maxrss is showed this way: > fprintf (fp, "%lu", ptok ((UL) resp->ru.ru_maxrss)); > ptok() actually does pages_to_KB conversion. If we convert to KB in > kernel, this code must be changed.
Ah, you talked about /usr/bin/time? sorry, I misunderstood a bit. Why time need number of pages?
In general, getrusage()::ru_maxrss is bsd compatibility feature. as far as possible, the same syscall spec is better. and bsd use KB unit.
if time command has reasonable reason, I can agree current design. but is there?
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