[rds-devel] Re: FW: Oracle RDS
Zach Brown
zach.brown at oracle.com
Tue Jan 23 10:40:06 PST 2007
>>
>>> Added modprobe parameter to the rds module: unsignaled_wrs -
>>> number of
>>> unsignaled work requests.
>>> The default value is 0.
>>
>> I don't understand why this would be tunable. Why would we ever
>> want to
>> signal more than the minimum required? Are there
>> hardware/switch/firmware issues here I'm missing that would make
>> someone
>> want to tune this?
Has this question been answered?
> You are right.
> For this reason I propose to set SOLICITED and SIGNALED flags after
> posting a quarter ring and on the last fragment in order to avoid
> consumption of the whole ring.
Why not just on the last fragment? That seems like it would make the
patch a lot simpler.
- z
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