Date: Fri, 06 Nov 2009 12:51:56 -0700 From: Michael Loftis <mloftis@wgops.com> To: freebsd-stable@freebsd.org Subject: Re: Performance issues with 8.0 ZFS and sendfile/lighttpd Message-ID: <C5D326940ECACEB11B6ABF8E@[192.168.1.44]> In-Reply-To: <4AEEBD4B.1050407@quip.cz> References: <772532900-1257123963-cardhu_decombobulator_blackberry.rim.net-1402739480-@bda715.bisx.prod.on.blackberry> <hcma4s$c49$1@ger.gmane.org> <4AEEBD4B.1050407@quip.cz>
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--On Monday, November 02, 2009 12:06 PM +0100 Miroslav Lachman <000.fbsd@quip.cz> wrote: > I have more strange issue with Lighttpd in jail on top of ZFS. Lighttpd > is serving static content (mp3 downloads thru flash player). Is runs fine > for relatively small number of parallel clients with bandwidth about 30 > Mbps, but after some number of clients is reached (about 50-60 parallel > clients) the throughput drops down to 6 Mbps. > > I can server hundereds of clients on same HW using Lighttpd not in jail > and UFS2 with gjournal instead of ZFS reaching 100 Mbps (maybe more). > > I don't know if it is ZFS or Jail issue. Check iostat 5 or zpool iostat 5 -- I bet you're disk thrashing when you start to slow down.
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