PROOF performance on different disk/RAID configuration

Hi everyone,

Here is the performance benchmark for PROOF, it could be good reference for you before you setup your PROOF pool.

Please let me know if you have any questions.


Dear Neng:

After reading your slide, I have one questions: On slide 20 I see ‘Disk I/O only reaches ~25MB/sec even when we were using RAID’, while on slide 7 I see ‘The maximum disk I/O can reach ~55MB/sec with RAID 5’. So the disk I/O drops more than 50%.Is this because the ATLAS format files(50MB/file) are much smaller than the Benchmark files (900MB/file)? or ATLAS file structure is more complicated to read?