Date: Mon, 02 Nov 2009 14:14:35 +0100 From: Miroslav Lachman <000.fbsd@quip.cz> To: Ivan Voras <ivoras@freebsd.org> Cc: freebsd-stable@freebsd.org Subject: Re: Performance issues with 8.0 ZFS and sendfile/lighttpd Message-ID: <4AEEDB3B.5020600@quip.cz> In-Reply-To: <hcmhbj$40s$1@ger.gmane.org> References: <772532900-1257123963-cardhu_decombobulator_blackberry.rim.net-1402739480-@bda715.bisx.prod.on.blackberry> <hcma4s$c49$1@ger.gmane.org> <4AEEBD4B.1050407@quip.cz> <hcmhbj$40s$1@ger.gmane.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Ivan Voras wrote: > Miroslav Lachman 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. > > Do you have actual disk IO or is the vast majority of your data served > from the caches? (actually - the same question to the OP) I had ZFS zpool as mirror of two SATA II drives (500GB) and in the peak iostat (or systat -vm or gstat) shows about 80 tps / 60% busy. In case of UFS, I am using gmirrored 1TB SATA II drives working nice with 160 or more tps. Both setups are using FreeBSD 7.x amd64 with GENERIC kernel, 4GB of RAM. As the ZFS + Lighttpd in jail was unreliable, I am no longer using it, but if you want some more info for debuging, I can set it up again. Miroslav Lachman
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4AEEDB3B.5020600>