Did a ioping instead. I believe it does the trick of measuring. Here's what I got:
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > *4.0 kb from . (ext4 /dev/ploop48624p1): request=1 time=283 us4.0 kb from > . (ext4 /dev/ploop48624p1): request=2 time=540 us 4.0 kb from . (ext4 > /dev/ploop48624p1): request=3 time=421 us4.0 kb from . (ext4 > /dev/ploop48624p1): request=4 time=429 us4.0 kb from . (ext4 > /dev/ploop48624p1): request=5 time=7.5 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=6 time=30.7 ms 4.0 kb from . (ext4 > /dev/ploop48624p1): request=7 time=483 us4.0 kb from . (ext4 > /dev/ploop48624p1): request=8 time=619 us4.0 kb from . (ext4 > /dev/ploop48624p1): request=9 time=47.2 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=10 time=13.8 ms 4.0 kb from . (ext4 > /dev/ploop48624p1): request=11 time=12.7 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=12 time=519 us4.0 kb from . (ext4 > /dev/ploop48624p1): request=13 time=456 us4.0 kb from . (ext4 > /dev/ploop48624p1): request=14 time=327 us 4.0 kb from . (ext4 > /dev/ploop48624p1): request=15 time=17.8 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=16 time=37.4 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=17 time=178.2 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=18 time=288 us 4.0 kb from . (ext4 > /dev/ploop48624p1): request=19 time=20.9 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=20 time=1.1 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=21 time=41.9 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=22 time=32.7 ms 4.0 kb from . (ext4 > /dev/ploop48624p1): request=23 time=20.2 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=24 time=12.9 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=25 time=123.6 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=26 time=36.4 ms 4.0 kb from . (ext4 > /dev/ploop48624p1): request=27 time=38.3 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=28 time=670 us4.0 kb from . (ext4 > /dev/ploop48624p1): request=29 time=55.7 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=30 time=19.1 ms 4.0 kb from . (ext4 > /dev/ploop48624p1): request=31 time=220 us4.0 kb from . (ext4 > /dev/ploop48624p1): request=32 time=43.1 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=33 time=33.2 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=34 time=31.0 ms 4.0 kb from . (ext4 > /dev/ploop48624p1): request=35 time=58.7 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=36 time=577 us4.0 kb from . (ext4 > /dev/ploop48624p1): request=37 time=26.6 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=38 time=586.4 ms 4.0 kb from . (ext4 > /dev/ploop48624p1): request=39 time=41.4 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=40 time=17.5 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=41 time=254 us4.0 kb from . (ext4 > /dev/ploop48624p1): request=42 time=102.0 ms 4.0 kb from . (ext4 > /dev/ploop48624p1): request=43 time=212.3 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=44 time=33.6 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=45 time=434.5 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=46 time=360.5 ms 4.0 kb from . (ext4 > /dev/ploop48624p1): request=47 time=40.4 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=48 time=132.2 ms4.0 kb from . (ext4 > /dev/ploop48624p1): request=49 time=141.2 ms^[4.0 kb from . (ext4 > /dev/ploop48624p1): request=50 time=26.9 ms ^C--- . (ext4 > /dev/ploop48624p1) ioping statistics ---50 requests completed in 52.1 s, 16 > iops, 65.0 kb/smin/avg/max/mdev = 220 us / 61.5 ms / 586.4 ms / 113.3 ms* A couple of them were way above 15ms. I still couldn't link a stutter to I/O lag yet. With that I mean that I didn't experience a "hiccup" while noticing the I/O increase at the same time. I tried disabling replays and logs yesterday but it hat little effect since the system was behaving better than usual. Looks like it depends on the neighbours noise, indeed. Is that a solid evidence to go to the host and ask to move or get an SSD!? And, repeating myself a bit, would SSD help!? Thanks guys! _pilger _______________________________________________ To unsubscribe, edit your list preferences, or view the list archives, please visit: https://list.valvesoftware.com/cgi-bin/mailman/listinfo/hlds_linux
