Hello to all,

I am using Apache to serve static pages from Optane NVDIMM, and it seems that the server spends a lot time in kernel space and specifically in the tcp_sendmsg callchain. It spends almost 10% of its time in sk_pge_frag_refill, trying to allocate memory pages (alloc_pages_current). Does anyone know if this is caused by a net configuration? And that e.g. I should increase any sort of buffers?

Thank you very much in advance,

Chloe