Date: Wed, 17 Feb 2010 17:03:49 +0100 From: Harald Schmalzbauer <h.schmalzbauer@omnilan.de> To: freebsd-stable@freebsd.org Subject: best practice to watch TCP parms of established sockets Message-ID: <4B7C1365.9070806@omnilan.de>
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[-- Attachment #1 --] Hello, while doing some ZFS tests with RELENG_8 I recognized a mysterious performace drop after an hour uptime. Now my first idea is to compare MSS and windows sizes before and after the performance drop. How do I best capture them? tdpcump? It's GbE linkspeed... Or is netstat capable to show these values? Or is there any way to read out the values stored in tcp.hostcache? Thanks, -Harry [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.13 (FreeBSD) iEYEARECAAYFAkt8E2wACgkQLDqVQ9VXb8jxRQCfQGmiM2RjL+9tOVzVC0zcFh+Z eFQAoNJQ2I02+aJa+ZD4Xl5rxqESBFTC =JyA8 -----END PGP SIGNATURE-----
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