Re: vnode 'leak' in 4.x ...

From: Marc G. Fournier (scrappy_at_hub.org)
Date: 10/30/04

  • Next message: Marc G. Fournier: "Re: vnode 'leak' in 4.x ..." 
    Date: Sat, 30 Oct 2004 13:31:31 -0300 (ADT)
To: freebsd-stable@freebsd.org

    Just to give an idea of what a second server, with less uptime, is looking
    like, with the approx. the same # of VMs on her:

    Oct 30 13:29:00 neptune root: debug.numvnodes: 462882 - debug.freevnodes: 132826 - debug.vnlru_nowhere: 0 - vlruwt
    Oct 30 13:30:00 neptune root: debug.numvnodes: 462882 - debug.freevnodes: 151976 - debug.vnlru_nowhere: 0 - vlruwt

    But she's only been up 7 days so far ...

    On Sat, 30 Oct 2004, Marc G. Fournier wrote:

    >
    > A little while ago, I reported a suspicion that vnodes just weren't being
    > freed up on long running servers ... after 55days of uptime on one of my
    > servers, here is what I'm dealing with ...
    >
    > 793 'samples' today (one every minute)
    > 786 with vnlru in a vlrup state
    >
    > I shutdown all of the VMs running on the large hard drive (the only place
    > unionfs is being used) and umount'd the drive ... there were some suggested
    > back then that this might/should free everything back up again ... but it
    > didn't:
    >
    > Oct 30 13:06:02 venus root: debug.numvnodes: 522265 - debug.freevnodes: 57966
    > - debug.vnlru_nowhere: 209679 - vlruwt
    > Oct 30 13:07:00 venus root: debug.numvnodes: 522265 - debug.freevnodes: 57268
    > - debug.vnlru_nowhere: 209679 - vlruwt
    > Oct 30 13:08:00 venus root: debug.numvnodes: 522265 - debug.freevnodes: 52335
    > - debug.vnlru_nowhere: 209679 - vlruwt
    > Oct 30 13:09:00 venus root: debug.numvnodes: 522265 - debug.freevnodes: 50228
    > - debug.vnlru_nowhere: 209682 - vlrup
    > Oct 30 13:10:01 venus root: debug.numvnodes: 522265 - debug.freevnodes: 44407
    > - debug.vnlru_nowhere: 209690 - vlrup
    > Oct 30 13:11:00 venus root: debug.numvnodes: 522265 - debug.freevnodes: 35424
    > - debug.vnlru_nowhere: 209697 - vlrup
    > Oct 30 13:12:02 venus root: debug.numvnodes: 522265 - debug.freevnodes: 34626
    > - debug.vnlru_nowhere: 209708 - vlrup
    > Oct 30 13:13:00 venus root: debug.numvnodes: 522265 - debug.freevnodes: 29214
    > - debug.vnlru_nowhere: 209727 - vlrup
    > Oct 30 13:14:00 venus root: debug.numvnodes: 522265 - debug.freevnodes: 24414
    > - debug.vnlru_nowhere: 209746 - vlrup
    > Oct 30 13:15:00 venus root: debug.numvnodes: 522265 - debug.freevnodes: 26994
    > - debug.vnlru_nowhere: 209766 - vlrup
    >
    > The 'vlruwt' states above are while I had everything shutdown ... the vlrup's
    > all started again after I mounted the drive and started to restart the VMs
    > themselves ...
    >
    > I expect a high # of vnodes to be used ... that isn't the issue ... the issue
    > is that even getting rid of the major mount point, so that only /, /tmp,
    > /usr, /var are left up, the large # of vnodes that are in use on that mount
    > point aren't being freed by vnlru :(
    >
    > I hate to reboot the server, but it looks like I've got no choice at this
    > point ... is there something else that I can do, in 50 days or so, to provide
    > more information?
    >
    > Thanks ...
    >
    > ----
    > Marc G. Fournier Hub.Org Networking Services (http://www.hub.org)
    > Email: scrappy@hub.org Yahoo!: yscrappy ICQ: 7615664
    > 

    ----
Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
Email: scrappy@hub.org           Yahoo!: yscrappy              ICQ: 7615664
_______________________________________________
freebsd-stable@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-stable
To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"
  • Next message: Marc G. Fournier: "Re: vnode 'leak' in 4.x ..."