Re: rtl8192se: ping router gives mdev of 25387.102???

From: Larry Finger
Date: Thu Sep 13 2012 - 10:35:37 EST

On 09/13/2012 05:18 AM, Norbert Preining wrote:
Hi everyone,

(please cc)

see $subject ...

No warning, nothing in the logs, but pinging my router I get
things like:
--- ping statistics ---
376 packets transmitted, 315 received, +33 errors, 16% packet loss, time 405164ms
rtt min/avg/max/mdev = 0.873/10077.793/95935.698/25387.102 ms, pipe 68

--- ping statistics ---
1252 packets transmitted, 1225 received, 2% packet loss, time 1252976ms
rtt min/avg/max/mdev = 0.941/764.171/19929.265/2758.225 ms, pipe 20

Has anyone *ever* seen a mdev of 25387.102 ms ???

At the same time I am pinging the same router from an iphone with a
steady stream of 40ms or so, no problem whatsoever ...

$ lspci -v -s 03:00.0
03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8191SEvB Wireless LAN Controller (rev 10)
Subsystem: Realtek Semiconductor Co., Ltd. Device e020
Flags: bus master, fast devsel, latency 0, IRQ 17
I/O ports at 2000 [size=256]
Memory at f0500000 (32-bit, non-prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Legacy Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Virtual Channel
Capabilities: [160] Device Serial Number 88-55-22-fe-ff-4c-e0-00
Kernel driver in use: rtl8192se

When you post the output of lspci, always include the -nn or -nnv switches. That way, we get the PCI ID. As there are several varieties of the RTL8192SE, I need that info. In addition, what are the details of your AP - STA configuration. What is the distance? Is it 802.11n or 802.11g? What is the signal strength as indicated by iwconfig or a scan?


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