Messages in this thread |  | | Date | Mon, 19 Aug 1996 10:23:51 +0200 (MET DST) | From | Mikael Abrahamsson <> | Subject | Re: interrupt counts |
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On Mon, 19 Aug 1996, Matti E Aarnio wrote:
> [ about counter wrapping ] > > Yes, the same way IP-accounting wrapps pretty quickly as well. 4 gigs over > > a net isnt a lot today. Is this perhaps something that should be > > considered for 2.1, to convert more and more of these > > on-busy-machines-will-wrap-within-a-year counters into 64bit ones? I mean, > > as speed of machines goes up all the time, wouldnt it be nice to be ahead > > for a while? > > It sure would be nice -- wrap within a year ?
My notion was that the whole kernel should be looked over for these quickly-wrappable pointers, and they should be converted. The only one that I personally have noticed is this IP-accounting thing. I tend to see more and more of these as times passes by though, since memory/speed/diskspace increases at an enormous pace.
> Hmm.. ftp.funet.fi: Uptime now 32 days, FDDI interface output > packets count is 1.2 billion, average FTP payload dataflow per > day is 20-24 GB (weekends are around 15-17 GB per day). > TCP overheads, WWW, and several other services not counted.
Yes, ftp.funet.fi was in my thoughts as well. ftp.cdrom.com the same way... :)
> HOWEVER, I might want to have it as a configuration option. > At low-level 386/25 (my home machine) I am entirely happy > with 32-bit counters. > > bool 'Do you want unwrappable (64 bit) network counters ?' \ > CONFIG_LONG_NETWORK_COUNTERS
I dont know how much handling 64bit instead of 32 bit decereases performance, but this is definately an option.
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