| It seems to me also that QuerySplitter suffers from the same problem. Could you take a look at  HHH-11588 Open ? The performance impact isn’t so bad than in HHH-4959 Closed , but is significant anyway. When we ran into performance problems, I found this HHH-4959 Closed ticket and I backported the fix to 5.0.13. For a while, I thought the performance problems were gone. But as the heap size starts to grow near 10 GB, performance slowly starts to degrade again and I am seeing more and more BLOCKED threads. This time the origin for the blocking is QuerySplitter like described in HHH-11588 Open . Is it safe to apply the same fix there as well, what do you think? |
