Date: Mon, 27 Mar 2006 18:45:12 +0200 From: "OxY" <oxy@field.hu> To: "Jin Guojun [VFFS]" <g_jin@lbl.gov> Cc: Lucas Holt <luke@foolishgames.com>, FreeBSD Mailing Lists <freebsd-performance@freebsd.org>, Arne Woerner <arne_woerner@yahoo.com> Subject: Re: packet drop with intel gigabit / marwell gigabit Message-ID: <001601c651bd$d1774040$0201a8c0@oxy> References: <20060322071023.70808.qmail@web30305.mail.mud.yahoo.com> <442187FE.3060300@lbl.gov> <003301c64f44$89fdcd40$0201a8c0@oxy> <820F5FD6-C31F-4C28-9E66-64643C03086B@foolishgames.com> <4424520D.9000504@lbl.gov> <008501c65030$96726710$0201a8c0@oxy> <44276151.1060302@lbl.gov>
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i decided to give up, can't get rid of packet loss... thank you all for your help! ----- Original Message ----- From: "Jin Guojun [VFFS]" <g_jin@lbl.gov> To: "OxY" <oxy@field.hu> Cc: "Lucas Holt" <luke@foolishgames.com>; "FreeBSD Mailing Lists" <freebsd-performance@freebsd.org>; "Arne Woerner" <arne_woerner@yahoo.com> Sent: Monday, March 27, 2006 5:51 AM Subject: Re: packet drop with intel gigabit / marwell gigabit > OxY wrote: > >> what kind of details should i attach? to analyze the problem? > > Assume that you have process A to cause process B dropping packets: > > Step (1): > Run B only -- what is the maximum through without packet drop? > what is the CPU utilization? > what type of traffic (protocol -- TCP, UDP, etc.) does B > use? > does B have other I/O? If so, how much is the I/O > bandwidth used? > > Step (2): > reRun B and involving A gradually (increasing A's wieght) till B drops > packets. > provide all above statistics for A and B at this point (where drop > starts). > > One thing I missed in your original post what protocol drops packet -- > TCP or UDP? > > -Jin
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