Not sure if helpful but if @Denis_VINCENT is having the same issue of finding out of sizing, and seeing same errors as me ("The connection wit hthe server was lost. Any unsaved changes will be preserved")
We opened a TAC and ran the CP Doctor and found the following in the detailed_diag_report, which seems to indicate that we're overutilizing our server:
Daily Average Logging Rates:
Yesterday Avg Logs/sec: 450.14285714285717
Yesterday Avg Index/sec: 224
--------------------------------------------------------------------Yesterday Hourly Average Index/sec--------------------------------------------------------------------
| Domain | Mode |0-1 |1-2 |2-3 |3-4 |4-5 |5-6 |6-7 |7-8 |8-9 |9-10 |10-11 |11-12 |12-13 |13-14 |14-15 |15-16 |16-17 |17-18 |18-19 |19-20 |20-21 |21-22 |22-23 |23-24 |
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|System Data |Files |213 |159 |142 |170 |176 |178 |186 |270 |319 |330 |386 |483 |349 |278 |245 |215 |175 |152 |143 |137 |130 |128 |121 |121 |
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Indexing Status:
219900 logs in last 10 minutes in solr
366 logs per second in solr
Query Solr Logs by Product:
Hint : Extended logging has been detected
-------------------Today's Logs-------------------
| Product | Num Of Logs |
--------------------------------------------------
|HTTPS Inspection |11898787 (44.65%) |
|Firewall |11142006 (41.81%) |
|VPN |3162759 (11.87%) |
|Application Control |122469 (0.46%) |
|URL Filtering |117503 (0.44%) |
|Anti-Virus |105833 (0.40%) |
|Identity Awareness |96431 (0.36%) |
|Threat Emulation |5443 (0.02%) |
|CloudGuard IaaS |2843 (0.01%) |
|Mobile Access |2208 (0.01%) |
|Anti-Spam and Email Security |2085 (0.01%) |
|IPS |319 (0.00%) |
|System Monitor |198 (0.00%) |
|SmartConsole |149 (0.00%) |
|WEB_API |24 (0.00%) |
|ESOD |16 (0.00%) |
|Threat Extraction |4 (0.00%) |
|SmartEvent Client |4 (0.00%) |
|SmartDashboard |2 (0.00%) |
|Scheduled system update |1 (0.00%) |
--------------------------------------------------
Sizing status:
ERROR : In '405' machine (RAM:16 CPU: 4), the average Logging rate is 450 logs per second, while supported logging rate per machine size is 200 logs per second.