Kernel NFS Probleme (90% wait)
Hallo,
ich habe mit meinem Notebook über WLAN das Problem, dass ich sobald ich auf
NFS schreibe meine io-wait-Rate auf 90% steigt. nfsstat liefert eine
retrans-Rate von etwas über 5%. Das ist mir als Erklärung zu wenig. Die
anderen Werte sind IMHO unaffällig.
Die ICMP Response-Zeiten steigen dann von 2.86ms auf über 530 ms an.
Hat wer noch eine Idee, wie ich die Ursache weiter eingrenzen kann?
(Oder ist das über WLAN so üblich?)
TIA -- Peter
~:1> sar 1 10
Linux Astor 2.6.12.2astor #1 SMP Sat Sep 10 14:44:35 CEST 2005 i686 11/06/2005
23:07:52 cpu %usr %nice %sys %irq %softirq %wait %idle _cpu_
23:07:53 all 0 0 0 0 0 0 100
23:07:54 all 0 0 1 1 6 0 92
23:07:55 all 1 0 1 0 6 0 92
23:07:56 all 0 0 0 1 4 10 85
23:07:57 all 0 0 0 1 6 93 0
23:07:58 all 0 0 0 0 5 94 1
23:07:59 all 0 0 1 1 5 94 0
23:08:00 all 0 0 0 1 6 93 0
23:08:01 all 0 0 1 0 5 92 2
23:08:02 all 5 0 2 1 5 88 0
~:1> nfsstat
Server rpc stats:
calls badcalls badauth badclnt xdrcall
1 0 0 0 0
Server nfs v2:
null getattr setattr root lookup readlink
0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
read wrcache write create remove rename
0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
link symlink mkdir rmdir readdir fsstat
0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
Server nfs v3:
null getattr setattr lookup access readlink
1 100% 0 0% 0 0% 0 0% 0 0% 0 0%
read write create mkdir symlink mknod
0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
remove rmdir rename link readdir readdirplus
0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
fsstat fsinfo pathconf commit
0 0% 0 0% 0 0% 0 0%
Client rpc stats:
calls retrans authrefrsh
159344 8848 0
Client nfs v2:
null getattr setattr root lookup readlink
0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
read wrcache write create remove rename
0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
link symlink mkdir rmdir readdir fsstat
0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
Client nfs v3:
null getattr setattr lookup access readlink
0 0% 405 0% 2 0% 45 0% 68 0% 0 0%
read write create mkdir symlink mknod
101823 63% 45006 28% 6 0% 1 0% 0 0% 0 0%
remove rmdir rename link readdir readdirplus
5 0% 0 0% 0 0% 0 0% 0 0% 33 0%
fsstat fsinfo pathconf commit
0 0% 10 0% 0 0% 11940 7%
~:1> ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:02:3F:BE:4E:27
inet addr:127.0.0.2 Bcast:127.255.255.255 Mask:255.255.255.0
inet6 addr: fe80::202:3fff:febe:4e27/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:10 Base address:0xa000
eth1 Link encap:Ethernet HWaddr 00:04:23:79:C0:9E
inet addr:192.168.93.3 Bcast:192.168.93.255 Mask:255.255.255.0
inet6 addr: fe80::204:23ff:fe79:c09e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2984351 errors:0 dropped:0 overruns:0 frame:0
TX packets:2262384 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3530225910 (3.2 GiB) TX bytes:3157065621 (2.9 GiB)
Interrupt:10 Base address:0x6000 Memory:d0000000-d0000fff
eth2 Link encap:UNSPEC HWaddr 00-02-3F-3A-45-00-21-13-00-00-00-00-00-00-00-00
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:807474 errors:0 dropped:0 overruns:0 frame:0
TX packets:807474 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:499558671 (476.4 MiB) TX bytes:499558671 (476.4 MiB)
sit0 Link encap:IPv6-in-IPv4
NOARP MTU:1480 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
~:1> cat /proc/net/wireless
Inter-| sta-| Quality | Discarded packets | Missed | WE
face | tus | link level noise | nwid crypt frag retry misc | beacon | 17
eth1: 0004 100. 200. 0. 0 0 0 0 0 0
~:1> netstat -i
Kernel Interface table
Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg
eth0 1500 0 0 0 0 0 0 0 0 0 BMU
eth1 1500 0 2986751 0 0 0 2324098 0 0 0 BMRU
lo 16436 0 817277 0 0 0 817277 0 0 0 LRU
--
Peter.Weiss@consol.de ConSol* Software GmbH
Phone +49 89 45841-100 Consulting & Solutions
Mobile +49 177 6040121 Franziskanerstr. 38
http://www.consol.de D-81669 München
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