Re: 5.7-rc0: kswapd eats cpu during a disk test?!

2020-06-12 Thread Pavel Machek
Hi! > > > Performance of spinning rust is down, too, on x60: > > > > > > pavel@amd:~/misc/hw/hdd1t$ sudo ddrescue --force /dev/sda1 /dev/null > > > GNU ddrescue 1.19 > > > Press Ctrl-C to interrupt > > > rescued: 2147 MB, errsize: 0 B, current rate:3080 kB/s > > >ipos: 2147

Re: 5.7-rc0: kswapd eats cpu during a disk test?!

2020-06-12 Thread Pavel Machek
Hi! > > +CC linux-mm > > > > On 5/31/20 12:34 PM, Pavel Machek wrote: > > > Hi! > > > > > > This is simple cat /dev/sda > /dev/zero... on thinkpad x60 (x86-32), > > > with spinning rust. > > > > > > PID USER PR NIVIRTRESSHR S %CPU %MEM TIME+ > > > COMMAND > > >100

Re: 5.7-rc0: kswapd eats cpu during a disk test?!

2020-06-12 Thread Pavel Machek
Hi! > +CC linux-mm > > On 5/31/20 12:34 PM, Pavel Machek wrote: > > Hi! > > > > This is simple cat /dev/sda > /dev/zero... on thinkpad x60 (x86-32), > > with spinning rust. > > > > PID USER PR NIVIRTRESSHR S %CPU %MEM TIME+ COMMAND > >1000 root 20 0 0

Re: 5.7-rc0: kswapd eats cpu during a disk test?!

2020-06-01 Thread Vlastimil Babka
+CC linux-mm On 5/31/20 12:34 PM, Pavel Machek wrote: > Hi! > > This is simple cat /dev/sda > /dev/zero... on thinkpad x60 (x86-32), > with spinning rust. > > PID USER PR NIVIRTRESSHR S %CPU %MEM TIME+ COMMAND >1000 root 20 0 0 0 0 R 53.3 0.

5.7-rc0: kswapd eats cpu during a disk test?!

2020-05-31 Thread Pavel Machek
Hi! This is simple cat /dev/sda > /dev/zero... on thinkpad x60 (x86-32), with spinning rust. PID USER PR NIVIRTRESSHR S %CPU %MEM TIME+ COMMAND 1000 root 20 0 0 0 0 R 53.3 0.0 57:34.93 kswapd0 27897 root 20 06976580536 R