diff options
| author | Laurent Bercot <ska-skaware@skarnet.org> | 2025-05-02 17:04:50 +0000 |
|---|---|---|
| committer | Laurent Bercot <ska@appnovation.com> | 2025-05-02 17:04:50 +0000 |
| commit | bff439345cafa59a4bd72c2a20591e7bd8441b47 (patch) | |
| tree | 6dec677348dfb61fff299fb164300387bd57ec0b /doc | |
| parent | 777100e73376d0977ee4300b5580670edb6df08f (diff) | |
| download | mdevd-bff439345cafa59a4bd72c2a20591e7bd8441b47.tar.gz | |
Increase default kbufsz to 1 MiB; don't die on ENOBUFS (but spam)
Signed-off-by: Laurent Bercot <ska@appnovation.com>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/mdevd-coldplug.html | 6 | ||||
| -rw-r--r-- | doc/mdevd.html | 6 |
2 files changed, 6 insertions, 6 deletions
diff --git a/doc/mdevd-coldplug.html b/doc/mdevd-coldplug.html index 36654eb..b26d4c9 100644 --- a/doc/mdevd-coldplug.html +++ b/doc/mdevd-coldplug.html @@ -28,7 +28,7 @@ for all these devices. <h2> Interface </h2> <pre> - mdevd-coldplug [ -v <em>verbosity</em> ] [ -s <em>slashsys</em> ] [ -O <em>nlgroup</em> ] [ -b <em>kbufsize</em> ] + mdevd-coldplug [ -v <em>verbosity</em> ] [ -s <em>slashsys</em> ] [ -O <em>nlgroup</em> ] [ -b <em>kbufsz</em> ] </pre> <ul> @@ -57,8 +57,8 @@ if <a href="mdevd.html">mdevd</a> is running with a similar <tt>-O</tt> option with a compatible value; else, <tt>mdevd-coldplug</tt> will wait forever. </li> <li> <tt>-b</tt> <em>kbufsz</em> : try and reserve a kernel buffer of -<em>kbufsz</em> bytes for the netlink queue. The default is 500 kB; -if you're getting "No buffer space available" errors, try increasing this number. +<em>kbufsz</em> bytes for the netlink queue. The default is 1 MiB; +if you're getting related warnings on stderr, try increasing this number. This option is only meaningful when paired with the <tt>-O</tt> option. </li> </ul> diff --git a/doc/mdevd.html b/doc/mdevd.html index ca39b02..7c2a869 100644 --- a/doc/mdevd.html +++ b/doc/mdevd.html @@ -119,9 +119,9 @@ cause a loop by chaining two separate instances of mdevd. mdevd will protect you against accidents, not against intentional stupidity.) </li> <li> <tt>-b</tt> <em>kbufsz</em> : try and reserve a kernel buffer of <em>kbufsz</em> bytes for the netlink queue. Too large a buffer wastes kernel memory; -too small a buffer risks losing events. The default is <strong>512288</strong>, -meaning 500 kB, which should be -enough for most systems; if you're getting "No buffer space available" errors +too small a buffer risks losing events. The default is <strong>1048576</strong>, +meaning 1 MiB, which should be +enough for most systems; if you're getting "missed events" warnings from mdevd at coldplug time, try increasing this number. </li> <li> <tt>-n</tt> : dry run. mdevd will not create or delete device nodes, and it will not spawn commands. Instead, it will print to stdout |