通过 SAMBA 共享打印机打印到 CUPS 速度慢

通过 SAMBA 共享打印机打印到 CUPS 速度慢

我们有一个运行 CUPS 的 Debian 打印服务器。在 CUPS 中,我们配置了一个原始打印队列,它通过 IPP 连接到我们的网络打印机。

我还通过 Samba 打印机共享将这台打印机共享给我们的 Windows 用户,使用相当标准的 smb.conf 选项和 CUPS 作为后端。

使用 IPP 从 Windows 直接打印到 CUPS 队列时(例如http://cups-server:631/printers/打印机名称),打印机响应速度快,几乎立即打印。

但是,当通过 Windows 上的共享 Samba 打印机打印到打印队列时,打印机需要 15 秒以上才能打开“打印机属性”窗口,并且打印测试页也需要相同的时间。

在尝试推断原因的同时,我已经能够在两个完全独立的网络上重现该问题,其中包含两个不同的打印服务器和打印机以及许多不同的 Windows 客户端,因此我相信它并非特定于我的个人安装。同时使用 IP 地址和主机名会导致相同的行为。

是否需要调整任何选项或设置来加快 Samba 共享打印机的打印速度?

我正在运行 CUPS 2.2.1 和 Samba 4.5.12。我还可以在运行 CUPS 1.7.5 和 Samba 4.2.14 的旧服务器上重现相同的行为。

我的 smb.conf 如下。除了 Printing 标题下的前 4 个选项外,所有内容都是 Debian smb.conf 中的默认值。
我已经从默认的 smb.conf 中删除了所有大块不相关的注释

[global]

## Printing ##

# Enable the spoolssd Service
rpc_server:spoolss = external
rpc_daemon:spoolssd = fork

# Set minimum spoolssd pool
spoolssd:prefork_min_children = 2

# Set printing backend to CUPS
printing = CUPS

## Browsing/Identification ###

# Change this to the workgroup/NT-domain name your Samba server will part of
   workgroup = WORKGROUP

# Windows Internet Name Serving Support Section:
# WINS Support - Tells the NMBD component of Samba to enable its WINS Server
#   wins support = no

# WINS Server - Tells the NMBD components of Samba to be a WINS Client
# Note: Samba can be either a WINS Server, or a WINS Client, but NOT both
;   wins server = w.x.y.z

# This will prevent nmbd to search for NetBIOS names through DNS.
   dns proxy = no

#### Debugging/Accounting ####

# This tells Samba to use a separate log file for each machine
# that connects
   log file = /var/log/samba/log.%m

# Cap the size of the individual log files (in KiB).
   max log size = 1000

# We want Samba to log a minimum amount of information to syslog. Everything
# should go to /var/log/samba/log.{smbd,nmbd} instead. If you want to log
# through syslog you should set the following parameter to something higher.
   syslog = 0

# Do something sensible when Samba crashes: mail the admin a backtrace
   panic action = /usr/share/samba/panic-action %d


####### Authentication #######

# Server role. Defines in which mode Samba will operate. Possible
# values are "standalone server", "member server", "classic primary
# domain controller", "classic backup domain controller", "active
# directory domain controller".
#
# Most people will want "standalone sever" or "member server".
# Running as "active directory domain controller" will require first
# running "samba-tool domain provision" to wipe databases and create a
# new domain.
   server role = standalone server

# If you are using encrypted passwords, Samba will need to know what
# password database type you are using.
   passdb backend = tdbsam

   obey pam restrictions = yes

# This boolean parameter controls whether Samba attempts to sync the Unix
# password with the SMB password when the encrypted SMB password in the
# passdb is changed.
   unix password sync = yes

# For Unix password sync to work on a Debian GNU/Linux system, the following
# parameters must be set (thanks to Ian Kahan <<[email protected]> for
# sending the correct chat script for the passwd program in Debian Sarge).
   passwd program = /usr/bin/passwd %u
   passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .

# This boolean controls whether PAM will be used for password changes
# when requested by an SMB client instead of the program listed in
# 'passwd program'. The default is 'no'.
   pam password change = yes

# This option controls how unsuccessful authentication attempts are mapped
# to anonymous connections
   map to guest = bad user

# Allow users who've been granted usershare privileges to create
# public shares, not just authenticated ones
   usershare allow guests = yes

#======================= Share Definitions =======================

[homes]
   comment = Home Directories
   browseable = no

# By default, the home directories are exported read-only. Change the
# next parameter to 'no' if you want to be able to write to them.
   read only = yes

# File creation mask is set to 0700 for security reasons. If you want to
# create files with group=rw permissions, set next parameter to 0775.
   create mask = 0700

# Directory creation mask is set to 0700 for security reasons. If you want to
# create dirs. with group=rw permissions, set next parameter to 0775.
   directory mask = 0700

# By default, \\server\username shares can be connected to by anyone
# with access to the samba server.
# The following parameter makes sure that only "username" can connect
# to \\server\username
# This might need tweaking when using external authentication schemes
   valid users = %S

# Un-comment the following and create the netlogon directory for Domain Logons
# (you need to configure Samba to act as a domain controller too.)
;[netlogon]
;   comment = Network Logon Service
;   path = /home/samba/netlogon
;   guest ok = yes
;   read only = yes

# Un-comment the following and create the profiles directory to store
# users profiles (see the "logon path" option above)
# (you need to configure Samba to act as a domain controller too.)
# The path below should be writable by all users so that their
# profile directory may be created the first time they log on
;[profiles]
;   comment = Users profiles
;   path = /home/samba/profiles
;   guest ok = no
;   browseable = no
;   create mask = 0600
;   directory mask = 0700

[printers]
   path = /var/spool/samba
   printable = yes

# Windows clients look for this share name as a source of downloadable
# printer drivers
[print$]
   comment = Printer Drivers
   path = /var/lib/samba/printers
   browseable = yes
   read only = yes
   guest ok = no
# Uncomment to allow remote administration of Windows print drivers.
# You may need to replace 'lpadmin' with the name of the group your
# admin users are members of.
# Please note that you also need to set appropriate Unix permissions
# to the drivers directory for these users to have write rights in it
;   write list = root, @lpadmin

以下是 Samba 设置的相关打印默认值:
testparm -sv | grep -Ei --color '(print|drive|spool|devmode)'

Processing section "[homes]"
Processing section "[printers]"
Processing section "[print$]"
Loaded services file OK.
Server role: ROLE_STANDALONE

        load printers = Yes
        printcap cache time = 750
        printcap name =
        iprint server =
        disable spoolss = No
        addprinter command =
        deleteprinter command =
        show add printer wizard = Yes
        os2 driver map =
        logon drive =
        dcerpc endpoint servers = epmapper, wkssvc, rpcecho, samr, netlogon, lsarpc, spoolss, drsuapi, dssetup, unixinfo, browser, eventlog6, backupkey, dnsserver
        spoolssd:prefork_min_children = 2
        rpc_daemon:spoolssd = fork
        rpc_server:spoolss = external
        min print space = 0
        max reported print jobs = 0
        max print jobs = 1000
        printable = No
        print notify backchannel = No
        print ok = No
        printing = cups
        print command =
        printer name =
        use client driver = No
        default devmode = Yes
        force printername = No
        printjob username = %U
[printers]
        path = /var/spool/samba
        printable = Yes
        print ok = Yes
[print$]
        comment = Printer Drivers
        path = /var/lib/samba/printers

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