Date: Fri, 27 Apr 2007 22:22:22 +0200 From: =?iso-8859-1?Q?St=E5le?= Kristoffersen <staalebk@ifi.uio.no> To: freebsd-fs@freebsd.org Subject: ZFS performance Message-ID: <20070427202222.GA26824@eschew.pusen.org>
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I'm having trouble with performance using ZFS as the filesystem. I earlier ran UFS and had no problems pushing 50MB/s trough the network. Now with ZFS i even have problems reading 15MB/s locally. From the output of iostat and zpool iostat it looks like it reads about 2 times as much data from the disc compared to how much the program receive. (using dd, ftp or samba) Is there anything I could check? I've tried some sysctl settings: kern.ipc.shm_use_phys=1 vfs.vmiodirenable=1 vfs.hirunningspace=10485760 vfs.lorunningspace=10485760 net.inet.tcp.sendspace=65536 net.inet.tcp.recvspace=65536 net.inet.tcp.delayed_ack=0 but that did not do much difference. -- Ståle Kristoffersen staalebk@ifi.uio.no
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