Date: Tue, 26 Feb 2008 20:58:09 +0200 From: "Dave Raven" <dave@raven.za.net> To: "'Ingo Flaschberger'" <if@xip.at> Cc: freebsd-net@freebsd.org Subject: RE: Hping/Ping Message-ID: <03ef01c878a9$8aa08180$9fe18480$@za.net> In-Reply-To: <alpine.LFD.1.00.0802261940340.17127@filebunker.xip.at> References: <03cb01c8789b$04aade30$0e009a90$@za.net> <alpine.LFD.1.00.0802261831490.17127@filebunker.xip.at> <03cf01c8789e$f15b0860$d4111920$@za.net> <alpine.LFD.1.00.0802261848010.17127@filebunker.xip.at> <03d001c878a0$bf3d8680$3db89380$@za.net> <alpine.LFD.1.00.0802261902560.17127@filebunker.xip.at> <03de01c878a3$90cc7560$b2656020$@za.net> <alpine.LFD.1.00.0802261920440.17127@filebunker.xip.at> <03e501c878a5$588f1c50$09ad54f0$@za.net> <alpine.LFD.1.00.0802261930300.17127@filebunker.xip.at> <03e601c878a6$87380980$95a81c80$@za.net> <alpine.LFD.1.00.0802261940340.17127@filebunker.xip.at>
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Also - sometimes during my testing I see this message, it's hard to make it happen but its been popping up I'm not sure if its related/different etc -- "sendto: No buffer space available" Thanks Dave -----Original Message----- From: Ingo Flaschberger [mailto:if@xip.at] Sent: Tuesday, February 26, 2008 8:45 PM To: Dave Raven Cc: freebsd-net@freebsd.org Subject: RE: Hping/Ping Dear Dave, > I have set my icmplim to 1024. When it was 200 I would sometimes get a > warning about an OPEN port RST - which was also strange to me (that it was > open not closed). I suspected that it was because 5% of my packets where > being dropped though. > > The server is under reasonable load (networking wise) around 80-90mbits, but > the processor is 75% idle.. > > The other strange this is that a reboot solves this, and it takes around 1-2 > days to happen again.. you can try to enable polling: kern.polling.reg_frac=20 kern.polling.user_frac=10 kern.polling.burst_max=1000 and perhaps tune rx_processing limit: dev.em.0.rx_processing_limit: 100 you can also look at all open sessions when the server is in trouble: netstat -n Kind regards, Ingo Flaschberger
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