I was hacking on some code in a 32 bit guest VM, and I thought that I was corrupting something, because gnutls_dh_params_generate2 was seemingly getting stuck, spinning forever. But it turns out that it was really just very, very slow.
I don't think it's the VM itself, it seems to run reasonably well to me. Regular compiles get completed at a fairly reasonable pace. I don't know if it's just that gmp is slow on i686, if something is not right with the rnd generator, or something other reason. I'm just used to my native x86-64 bare metal cranking out a key at a good clip. After feeding 2048 bits to gnutls_dh_params_generate2 it cranks something out in only a few seconds.
But, for whatever reason may be, flipping over to an i686 guest VM, and gnutls_dh_params_generate2 runs slow as molasses. I'm clocking a 1024 bit run of gnutls_dh_params_generate2 to take several minutes long, typically. Sometimes I get lucky, and come up with a 1024-bit based parameter in 5-10 seconds. But my last two runs took a minute and a half, and over three minutes, each, and that's typical. With GNUTLS_SEC_PARAM_NORMAL telling me that I should use 3072 bits, that'll probably take a day.
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