3 ms·
I'm not sure what shes observing other than "feels weird" but my observation is the exact opposite, but my observations usually have some measurements to them.
by VectorLock 7y ago
I'm not sure what shes observing other than "feels weird" but my observation is the exact opposite, but my observations usually have some measurements to them.
- aardvarklegend 7y agoIt requires a perfect storm of just shy of 100% used memory and a lot of mmaped io. In that case the mmaped can get shunted to a handful of pages (or even one page) and so you lose all ability to have any block io larger then one page size. And every page of memory involves a fully blocking io request. It’s most certainly real for certain workloads (databases are common).
- azernik 7y ago"Feels weird" when she logs on to investigate serious performance problems that she's getting paged for.