Translations:FAQ/213/en

Typically UnrealIRCd uses only a few % CPU and less than 512MB of memory, even with 1000 users. However, in case of an attack or flood this can rise significantly. UnrealIRCd has a lot of countermeasures against floods and attacks but will need some power and memory during those times. You don't want your server to go down in such situation, so this is what we recommend: