| Summary: | Short freezes with KDE applications when sharing directories via Samba | ||
|---|---|---|---|
| Product: | [Frameworks and Libraries] frameworks-kio | Reporter: | Teunizz <teuniz> |
| Component: | general | Assignee: | David Faure <faure> |
| Status: | REPORTED --- | ||
| Severity: | normal | CC: | elvis.angelaccio, kdelibs-bugs, nate, teuniz |
| Priority: | NOR | ||
| Version: | unspecified | ||
| Target Milestone: | --- | ||
| Platform: | openSUSE | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
This isn't a problem pertaining to the share setup GUI. Moving to KIO, since that's what all these KDE apps have in common |
System: Opensuse Leap 42.2 & plasmashell 5.8.6 Applications that depend on KDE libs/framework, suffer from freezes during fileactivity when sharing directories and a Samba server is running. During those freezes the network interface is flooded with DNS requests trying to resolve the hostname of the system. How to reproduce: In Yast2, enable/setup a Samba server. Startup -> During Boot. Shares -> Disable all available shares. Check Allow Users to Share Directories. Check Allow Guest Access. In Dolphin, select a couple of directories to share. Rightclick on it and select Properties -> Share. Check Share with Samba. Check Allow Guests. Reboot. Start Wireshark and filter on DNS packets only. Start a couple of KDE-libs dependent applications like Kate (preferably with th filesystem browser plugin activated), Okular, Dolphin, and perform some file manipulations (copy/edit/save). Look what happens in Wireshark. A temporary workaround is to open Yast2 -> System -> Network Settings -> Hostname/DNS and check Assign Hostname to Loopback IP. It will make the desktop usable again but still not snappy. For a snappy KDE experience, you can't share directories using the above setup. What did I expect: to have a snappy/responsive desktop when sharing directories using a Samba server. Here's some output of Wireshark: No. Time Source Destination Protocol Length Info 1 0.000000000 192.168.1.2 192.168.1.1 DNS 73 Standard query 0x53ae A cetriolo.suse Frame 1: 73 bytes on wire (584 bits), 73 bytes captured (584 bits) on interface 0 Ethernet II, Src: AsustekC_c9:f2:f1 (48:5b:39:c9:f2:f1), Dst: Netgear_7f:3a:10 (28:c6:8e:7f:3a:10) Internet Protocol Version 4, Src: 192.168.1.2, Dst: 192.168.1.1 User Datagram Protocol, Src Port: 38071, Dst Port: 53 Domain Name System (query) No. Time Source Destination Protocol Length Info 2 0.000017735 192.168.1.2 192.168.1.1 DNS 73 Standard query 0xd632 AAAA cetriolo.suse Frame 2: 73 bytes on wire (584 bits), 73 bytes captured (584 bits) on interface 0 Ethernet II, Src: AsustekC_c9:f2:f1 (48:5b:39:c9:f2:f1), Dst: Netgear_7f:3a:10 (28:c6:8e:7f:3a:10) Internet Protocol Version 4, Src: 192.168.1.2, Dst: 192.168.1.1 User Datagram Protocol, Src Port: 38071, Dst Port: 53 Domain Name System (query) No. Time Source Destination Protocol Length Info 3 0.011026167 192.168.1.1 192.168.1.2 DNS 148 Standard query response 0x53ae No such name A cetriolo.suse SOA a.root-servers.net Frame 3: 148 bytes on wire (1184 bits), 148 bytes captured (1184 bits) on interface 0 Ethernet II, Src: Netgear_7f:3a:10 (28:c6:8e:7f:3a:10), Dst: AsustekC_c9:f2:f1 (48:5b:39:c9:f2:f1) Internet Protocol Version 4, Src: 192.168.1.1, Dst: 192.168.1.2 User Datagram Protocol, Src Port: 53, Dst Port: 38071 Domain Name System (response) No. Time Source Destination Protocol Length Info 4 0.011628077 192.168.1.1 192.168.1.2 DNS 148 Standard query response 0xd632 No such name AAAA cetriolo.suse SOA a.root-servers.net Frame 4: 148 bytes on wire (1184 bits), 148 bytes captured (1184 bits) on interface 0 Ethernet II, Src: Netgear_7f:3a:10 (28:c6:8e:7f:3a:10), Dst: AsustekC_c9:f2:f1 (48:5b:39:c9:f2:f1) Internet Protocol Version 4, Src: 192.168.1.1, Dst: 192.168.1.2 User Datagram Protocol, Src Port: 53, Dst Port: 38071 Domain Name System (response) No. Time Source Destination Protocol Length Info 5 0.011700108 192.168.1.2 192.168.1.1 DNS 68 Standard query 0x8681 A cetriolo Frame 5: 68 bytes on wire (544 bits), 68 bytes captured (544 bits) on interface 0 Ethernet II, Src: AsustekC_c9:f2:f1 (48:5b:39:c9:f2:f1), Dst: Netgear_7f:3a:10 (28:c6:8e:7f:3a:10) Internet Protocol Version 4, Src: 192.168.1.2, Dst: 192.168.1.1 User Datagram Protocol, Src Port: 33958, Dst Port: 53 Domain Name System (query)