Stephan Beyer wrote:
> On 01.07.2012 04:29, Stephan Beyer wrote:
>> Interestingly, if I take a look into merge.log now, I can see:
>>
>> 2012-07-01 04:13:03 Fatal database error: Bdb.DBError("BDB2034 unable to
>> allocate memory for mutex; resize mutex region")
>> 2012-07-01 04:13:03 closing database...
>
> I tried with bdb 5.3.
> Now I tried with bdb 5.1 and the effect is the same.
In sksconf add/adjust
pagesize: 128 # Use 64k pages for KDB
ptree_pagesize: 16 # Use 8K pages for PTree
BDB takes out a mutex lock on each page it's writing. BDB's default pagesize
is 512 bytes. Increasing the pagesize decreases the required number of mutexes.
When I was building KDB on a 1GB system, swapping occurred between 175000 &
200000 keys resulting in -n 7 for a 25k keys/file dump and -n 11 for 15k
keys/file dumps. I've never used fastbuild.
Once built, KDB and PTree may need BDB tuning parameters adjusted by DB_CONFIG
files.
-John
_______________________________________________
Sks-devel mailing list
Sks-devel@nongnu.org
https://lists.nongnu.org/mailman/listinfo/sks-devel
