Date: Fri, 05 Dec 2014 08:13:47 +0000 From: "=?utf-8?B?TG/Dr2MgQmxvdA==?=" <loic.blot@unix-experience.fr> To: freebsd-fs@freebsd.org Subject: High Kernel Load with nfsv4 Message-ID: <f17b01856a1a37c5ac830ae7490f2624@mail.unix-experience.fr>
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Hi, i'm trying to create a virtualisation environment based on jails. Those jails are stored under a big ZFS pool on a FreeBSD 9.3 which export a NFSv4 volume. This NFSv4 volume was mounted on a big hypervisor (2 Xeon E5v3 + 128GB memory and 8 ports (but only 1 was used at this time). The problem is simple, my hypervisors runs 6 jails (used 1% cpu and 10GB RAM approximatively and less than 1MB bandwidth) and works fine at start but the system slows down and after 2-3 days become unusable. When i look at top command i see 80-100% on system and commands are very very slow. Many process are tagged with nfs_cl*. I saw that there are TSO issues with igb then i'm trying to disable it with sysctl but the situation wasn't solved. Someone has got ideas ? I can give you more informations if you need. Thanks in advance. Regards, Loïc Blot, UNIX Systems, Network and Security Engineer http://www.unix-experience.frhome | help
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