search for: 150us

...te it to actual cursor BO. Here (nv92/core i7), this patch decreases overall cpu usage of drmmode_load_cursor_argb from 4.6ms to ~90us and lets nv50_crtc_cursor_set disappear from perf traces. --- I considered accelerating kernel-side copying with GPU, but it turns out that: - it's slower (120-150us), with frequent bursts (up to 5ms) - not applicable to <nv50 hw, which needs to transform cursor data Putting cursor BO in GART does not conflict with accelarating kernel side copying - times do not change, so it's safe to apply it. --- src/drmmode_display.c | 2 +- 1 file changed, 1 inser...

...given threshold (around 24 rules in my system) causes a huge performance degradation. On the other hand, for X < 24, the results don't seem to depend on X and moreover, the number of entries in the ipsets doesn't seem to matter much either. For examples, average latency results stay <150us even when the ipsets are full (contain 64k entries each) as long as there is no more than 24 iptables rules referring to these largest size ipsets. Note that the traffic forwarded through the system in the above tests does NOT match any of the rules (when all ipsets are empty, this is obviously t...