MJD Shop Account
2007-Mar-02 22:52 UTC
Re: [Fedora-directory-users] not enough file descriptors
ah! only 1024. What is considered a reasonable value? Is it setting this or picking it up from the defaults such as ulimits? I assume I need to do this on all of the multi-masters and consumers to be the same, or do I? Does it propagate? I''m not sharing the config tree among different servers. -----Original Message----->From: George Holbert <gholbert@broadcom.com> >Sent: Mar 2, 2007 5:16 PM >To: MJD Shop Account <mjdshop@earthlink.net>, "General discussion list for the Fedora Directory server project." <fedora-directory-users@redhat.com> >Subject: Re: [Fedora-directory-users] not enough file descriptors > >What is the value of the "nsslapd-maxdescriptors" attribute on cn=config? > >MJD Shop Account wrote: >> I have a problem with running out of file descriptors. I get this repeating message periodically in the /opt/fedora-ds/slapd-<servername>/logs/errors file: >> [02/Mar/2007:13:25:45 -0500] - Not listening for new connections - too many fds open >> [02/Mar/2007:13:25:46 -0500] - Listening for new connections again >> [02/Mar/2007:13:25:47 -0500] - Not listening for new connections - too many fds open >> [02/Mar/2007:13:25:47 -0500] - Listening for new connections again >> ... >> >> When this happens, the users cannot log in for long periods and get angry. Imagine that. I do have this in a multi-master configuration with a second master, which is different hardware and does not show this error. >> >> I read the tuning page http://directory.fedora.redhat.com/wiki/Performance_Tuning#Linux, which recommends updating the filedescriptors limit like so: >> echo "64000" > /proc/sys/fs/file-max >> >> However mine is already well above that: >> # cat /proc/sys/fs/file-max >> 128456 >> >> How much higher should I be setting it? I am running RHEL 4 update 4, single Pentium III 1.4GHz processor, 1280MB of memory. >> >> I don''t have any settinsg in sysctl.conf or /etc/security/limites for soft/hard limits, how do I tell what the defaults on soft/hard limits are? >> >> -- >> Fedora-directory-users mailing list >> Fedora-directory-users@redhat.com >> https://www.redhat.com/mailman/listinfo/fedora-directory-users >> >> > > >
Richard Megginson
2007-Mar-02 22:55 UTC
Re: [Fedora-directory-users] not enough file descriptors
MJD Shop Account wrote:> ah! only 1024. What is considered a reasonable value? Is it setting this or picking it up from the defaults such as ulimits? >The server sets this itself. So you have to set the value yourself. See http://www.redhat.com/docs/manuals/dir-server/pdf/ds71cli.pdf - search for nsslapd-conntablesize and nsslapd-maxdescriptors> I assume I need to do this on all of the multi-masters and consumers to be the same, or do I? Does it propagate? I''m not sharing the config tree among different servers. > > -----Original Message----- > >> From: George Holbert <gholbert@broadcom.com> >> Sent: Mar 2, 2007 5:16 PM >> To: MJD Shop Account <mjdshop@earthlink.net>, "General discussion list for the Fedora Directory server project." <fedora-directory-users@redhat.com> >> Subject: Re: [Fedora-directory-users] not enough file descriptors >> >> What is the value of the "nsslapd-maxdescriptors" attribute on cn=config? >> >> MJD Shop Account wrote: >> >>> I have a problem with running out of file descriptors. I get this repeating message periodically in the /opt/fedora-ds/slapd-<servername>/logs/errors file: >>> [02/Mar/2007:13:25:45 -0500] - Not listening for new connections - too many fds open >>> [02/Mar/2007:13:25:46 -0500] - Listening for new connections again >>> [02/Mar/2007:13:25:47 -0500] - Not listening for new connections - too many fds open >>> [02/Mar/2007:13:25:47 -0500] - Listening for new connections again >>> ... >>> >>> When this happens, the users cannot log in for long periods and get angry. Imagine that. I do have this in a multi-master configuration with a second master, which is different hardware and does not show this error. >>> >>> I read the tuning page http://directory.fedora.redhat.com/wiki/Performance_Tuning#Linux, which recommends updating the filedescriptors limit like so: >>> echo "64000" > /proc/sys/fs/file-max >>> >>> However mine is already well above that: >>> # cat /proc/sys/fs/file-max >>> 128456 >>> >>> How much higher should I be setting it? I am running RHEL 4 update 4, single Pentium III 1.4GHz processor, 1280MB of memory. >>> >>> I don''t have any settinsg in sysctl.conf or /etc/security/limites for soft/hard limits, how do I tell what the defaults on soft/hard limits are? >>> >>> -- >>> Fedora-directory-users mailing list >>> Fedora-directory-users@redhat.com >>> https://www.redhat.com/mailman/listinfo/fedora-directory-users >>> >>> >>> >> >> > > -- > Fedora-directory-users mailing list > Fedora-directory-users@redhat.com > https://www.redhat.com/mailman/listinfo/fedora-directory-users >