Continuing the emX thread...
----------------------------------------
#man 4 em
hw.em.txd
Number of transmit descriptors allocated by the driver. The
default value is 256. The 82542 and 82543-based adapters can
handle up to 256 descriptors, while others can have up to 4096.
I just upped values in my loader.conf:
hw.em.rxd=1024
hw.em.txd=1024
Thanks Dmitriy -- your reply on jboss gave me idea to try tuning that value.
----------------------------------------
I tried upping the rx_processing_limit on my active interfaces and that caused MORE watchdog
timeout events. In fact, they started to happen on em0 and em1 (previously not throwing errors).
dev.em.0.rx_processing_limit=200
dev.em.1.rx_processing_limit=200
dev.em.2.rx_processing_limit=200
dev.em.4.rx_processing_limit=200
I am going to keep those values in with the new hw.em.rxd settings and back them out if watchdog
events persist.
----------------------------------------
Questions to EM users:
Do you use POLLING or MSI Interrupts with FreeBSD 7.x and PCIe Ethernet
adapters?
Do you see watchdog timeout events on your Intel adapters?
----------------------------------------
I emailed Intel and asked for help. They referred me to this document (not
very helpful):
http://downloadmirror.intel.com/10957/ENG/README.txt
I replied and asked if other users are reporting watchdog timeout events. The tech was less than
helpful -- here was the response from [EMAIL PROTECTED]:
>> Please be aware that you are the first person who reports those “watchdog
timeouts”.
>>
>> Please note that this is an intermittent behavior, we have not been able to
>> determine exactly when that issue happens, and to which exact adapter under
>> which exact circumstances, in the moment that we have a problem we are able
>> to recreate many times this will become a “known issue” and most certainly
>> it will be posted in our website under the adapters that has that issue.
Dude! Take an ESL class. I also CC'd [EMAIL PROTECTED]
----------------------------------------
Last week I tried changing this setting:
dev.em.2.tx_int_delay: 33
dev.em.2.tx_abs_int_delay: 33
They did not help.
Rudy
_______________________________________________
freebsd-net@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-net
To unsubscribe, send any mail to "[EMAIL PROTECTED]"
