Date: Wed, 26 Jan 2011 22:35:39 +0000 From: David Tidey <david.tidey@tidey.com> To: freebsd-scsi@freebsd.org Subject: istgt performance issue when copying large files (1G plus) Message-ID: <AANLkTikwS94ETkz_UR7=Kez6oPnr137OXdAtEKWCarjS@mail.gmail.com>
next in thread | raw e-mail | index | archive | help
Hello, I am using FreeBSD 8.2 with the very latest istgt version 20110103. I am using istgt to expose a zfs volume to a windows client. When running a disk benchmark which writes 10 files of around 40mb each performance is 60-70Mb/sec. When I copy a video file over over 1G performance starts off fast - 60Mb/sec plus. After copying a couple of 100Mb performance starts to drop to less than 10Mb/sec. Exposing the same disks using samba gives performance of 40-50Mb/sec with no drop off problems I therefore am assuming this is an istgt problem Any views on how to diagnose this? David
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?AANLkTikwS94ETkz_UR7=Kez6oPnr137OXdAtEKWCarjS>