VFS_TIME_AUDIT(1M) System Administration tools VFS_TIME_AUDIT(1M)NAMEvfs_time_audit - samba vfs module to log slow VFS operations
SYNOPSIS
vfs objects = time_audit
DESCRIPTION
This VFS module is part of the samba(7) suite.
The time_audit VFS module logs system calls that take longer than the
number of milliseconds defined by the variable
time_audit:audit_timeout. It will log the calls and the time spent in
it.
It's kind of comparable with strace -T and is helpful to reveal
performance problems with the underlying file and storage subsystems.
This module is stackable.
OPTIONS
time_audit:audit_timeout = number of milliseconds
VFS calls that take longer than the defined number of milliseconds
that should be logged. The default is 10000 (10s).
EXAMPLES
This would log VFS calls that take longer than 3 seconds:
[sample_share]
path = /test/sample_share
vfs objects = time_audit
time_audit: audit_timeout = 3000
VERSION
This man page is correct for version 3.6.0 of the Samba suite.
AUTHOR
The original Samba software and related utilities were created by
Andrew Tridgell. Samba is now developed by the Samba Team as an Open
Source project similar to the way the Linux kernel is developed.
The time_audit VFS module was created with contributions from Abhidnya
Chirmule.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌────────────────────┬─────────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├────────────────────┼─────────────────────────────────┤
│Availability │ SUNWsmbar, SUNWsmbac, SUNWsmbau │
├────────────────────┼─────────────────────────────────┤
│Interface Stability │ External │
└────────────────────┴─────────────────────────────────┘
NOTES
Source code for Samba is available in the SUNWsmbaS package.
Samba(7) delivers the set of four SMF(5) services as can be seen from
the following example:
$ svcs samba wins winbind swat
STATE STIME FMRI
disabled Apr_21 svc:/network/samba:default
disabled Apr_21 svc:/network/winbind:default
disabled Apr_21 svc:/network/wins:default
disabled Apr_21 svc:/network/swat:default
where the services are:
"samba"
runs the smbd daemon managing the CIFS sessions
"wins"
runs the nmbd daemon enabling the browsing (WINS)
"winbind"
runs the winbindd daemon making the domain idmap
"swat"
Samba Web Administration Tool is a service providing access to
browser-based Samba administration interface and on-line
documentation. The service runs on software loopback network
interface on port 901/tcp, i.e. opening "http://localhost:901/" in
browser will access the SWAT service on local machine.
Please note: SWAT uses HTTP Basic Authentication scheme where user name
and passwords are sent over the network in clear text. In the SWAT case
the user name is root. Transferring such sensitive data is advisable
only on the software loopback network interface or over secure
networks.
Samba 3.6 04/10/2012 VFS_TIME_AUDIT(1M)