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...torage ? If the thing using > parallel CPUs in the guest is doing I/O you'd likely want to tune > storage at same time. In current QEMU git master there's a change[1] > that sets viort-blk/virtio-scsi num_queues to match SMP count, > so the guest OS get fully parallel I/O from meach guest CPU. > > [1] a4eef0711b2cf7a7476c3e2c202a414b68a1baa0 I'm not using a new enough qemu to have that and it doesn't appear in a released version, but I'll test again once we have a new enough version. > > However I don't think it can cause a problem and it seems o...

So it didn't make any noticable difference in my test. I wonder if the test guest I'm using (Fedora 32 using dracut) doesn't use parallel compression? However I don't think it can cause a problem and it seems obvious that it could benefit some cases. Rich.

...pecial to optimize storage ? If the thing using parallel CPUs in the guest is doing I/O you'd likely want to tune storage at same time. In current QEMU git master there's a change[1] that sets viort-blk/virtio-scsi num_queues to match SMP count, so the guest OS get fully parallel I/O from meach guest CPU. [1] a4eef0711b2cf7a7476c3e2c202a414b68a1baa0 > However I don't think it can cause a problem and it seems obvious that > it could benefit some cases. What's the default RAM size ? On hosts with very large numbers of CPUs (100's) you might need to scale up RAM size to...

Hi, I am a little bit new to ruby. I have a requirement that I need to get the data from the database. I need to do this many times in the whole application. But, I am looking for a way with which I can get the data from the database table only once and store it in some variable, and I can use it anywhere I want.(I am trying not to use the global variable for this purpose). Is there a way