[Lustre-discuss] write RPC & congestion

[Andreas Dilger]

On 2010-09-24, at 19:10, Andreas Dilger wrote:
> On 2010-09-24, at 18:20, burlen wrote:
>> To be sure I understand this, is it correct that each OST has its own pool of service threads? So system wide number of service threads is bound by oss_max_threads*num_osts?
> 
> Actuall, the current oss_max_threads tunable is for the whole OSS (as the name implies).  It would be quite useful, in fact, to have a tuneable that like oss_ost_threads (or similar) that is what you suggest.
> 
> If you have some time and C coding skills, implementing this would be fairly easily done (see lustre/ost/ost_handler.c and the oss_num_threads tunable handling therein, along with .../lproc_ost.c).

In fact, I just noticed that there is such a tunable in a new patch already in bug 22516.  Sorry for the confusion.

Cheers, Andreas
--
Andreas Dilger
Lustre Technical Lead
Oracle Corporation Canada Inc.