I have ClickHouse server running in virtual environment that reports the following warning:

```
# clickhouse-client
ClickHouse client version 22.7.2.15 (official build).
Connecting to localhost:9000 as user default.
Connected to ClickHouse server version 22.7.2 revision 54457.

Warnings:
 * Linux is not using a fast TSC clock source. Performance can be degraded. Check /sys/devices/system/clocksource/clocksource0/current_clocksource

# cat /sys/devices/system/clocksource/clocksource0/current_clocksource
kvm-clock
```

It looks like a false positive as kvm-clock is considered a preferable clock source for kvm-based VMs.
https://opensource.com/article/17/6/timekeeping-linux-vms

Regardless of whether it's a bug or not, I'd like to have some mechanism that allows to disable particular warnings. There are may be other questionable warnings in the future.

{
    DatabaseCatalog::instance().assertDatabaseExists(name);
    auto lock = getLock();
    current_database = name;
    calculateAccessRights();
}
void Context::setCurrentQueryId(const String & query_id)
{
    
    
    
    
    union
    {
        char bytes[16];
        struct
        {
            UInt64 a;
            UInt64 b;
        } words;
        UUID uuid{};
    } random;
    random.words.a = thread_local_rng();