Subject: Re: [OpenAFS] Server disk operations speed Date: Mon, Apr 08, 2013 at 07:11:24PM +0300 Quoting jukka.tuomi...@finndesign.fi (jukka.tuomi...@finndesign.fi): > > Hi all, > > thank you for your responses. Before going through them in detail, I would > just like to make a reality check. What kind of performance figures should > one expect from an averagely working afs network (LAN/WAN)? Say, if you > would duplicate roughly the 2000 files/300MB directory in your setup, what > kind of rates do you get? That is, is 500-1000KB/s a reasonable starting > point for optimization, not a magnitude or two higher?
GE LAN, client and server connected in same switch. 1.6.2 server, 1.4 series client. Copy inside AFS, same volume, same file server. $ du -sh ../infected/; time cp -r ../infected . 66M ../infected/ real 0m17.009s user 0m0.000s sys 0m8.457s $ 3.8 MB/sec. Copy out of AFS, to an iSCSI volume also on local LAN. $ du -sh ../infected/; time cp -r ../infected /scratch/mansaxel/ 66M ../infected/ real 0m0.546s user 0m0.004s sys 0m0.416s Hot cache. 120+MB/sec. Into AFS from local file system: jaja.besserwisser.org$ time cp -r /scratch/mansaxel/infected . real 0m9.113s user 0m0.000s sys 0m9.077s 7.24 MB / sec. Also hot cache, so probably close to max for this test case. All of this is purely anecdotal and not very controlled environment, but pointers to ballpark figures it is. -- Måns Nilsson primary/secondary/besserwisser/machina MN-1334-RIPE +46 705 989668 You mean you don't want to watch WRESTLING from ATLANTA?
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