One question more: does it have disadvantages if I set the
max_grant_farmes to high? (I have it at 128 now. Should I look what it
uses max and set it corresponding to it?
Am 2018-06-30 13:43, schrieb Tomas Mozes:
> if it's Xen version 4.10, then you need to set it in the domU
> configuration via max_grant_frames parameter. In older Xen it's a
> kernel parameter set globally.
> On Sat, Jun 30, 2018 at 12:14 PM, Christoph <[hidden email]> wrote:
That's a good question I don't have answer for (the devs should answer this one). This page https://www.novell.com/support/kb/doc.php?id=7018590 even recommends 256 and it works for me fine, never observed a hang after setting it to this value. However the maximum gnttab I've seen was around 50-60, so 128 is probably enough. This of course depends on your usage, so it should be monitored and adjusted as needed. I think debian wanted to raise it to 64.