kernel 4.15.7/64bit, C3600 is unstable during heavy I/O on PCI

2018-03-15 Thread Carlo Pisani
hi I was copying 500Mbyte of files in a shell_A, while I was also copying other files in shell_B. I was connected to the machine through ssh. And I was working on a SATA harddrive connected to VT6421 PCI_SATA controller The kernel is configured without -mlong-calls, and it's C3600 ~ # uname -r

C3600 kernel/64bit 4.* slow IO due to -mlong-calls

2018-03-15 Thread Carlo Pisani
hi I am experiencing a very annoying behavior with my HPPA C3600: if I compile the (linux) kernel with -mlong-calls then the IO (e.g. file copy) becomes very slow, and the PCI becomes unstable (i.e. it crashes the machine) kernel gcc binutilswith mlongwithout mlong 4.15.7 4.9.3

Re: C3600 kernel/64bit 4.* slow IO due to -mlong-calls

2018-03-15 Thread John David Anglin
On 2018-03-15 4:43 PM, Helge Deller wrote: On 15.03.2018 16:36, Carlo Pisani wrote: I am experiencing a very annoying behavior with my HPPA C3600: if I compile the (linux) kernel with -mlong-calls then the IO (e.g. file copy) becomes very slow, and the PCI becomes unstable (i.e. it crashes the

Re: C3600 kernel/64bit 4.* slow IO due to -mlong-calls

2018-03-15 Thread John David Anglin
On 2018-03-15 4:43 PM, Helge Deller wrote: kernel gcc binutilswith mlongwithout mlong 4.15.7 4.9.3 2.25.1 13.4 MB/s27.0 MB/s 4.15.7 6.4.0 2.25.1 13.4 MB/s27.0 MB/s 4.15.7 6.4.0 2.29.1 14.4 MB/s25.0 MB/s Interesting bad results! It's hard to

Re: C3600 kernel/64bit 4.* slow IO due to -mlong-calls

2018-03-15 Thread Helge Deller
Hi Carlo, On 15.03.2018 16:36, Carlo Pisani wrote: > I am experiencing a very annoying behavior with my HPPA C3600: if I > compile the (linux) kernel with -mlong-calls then the IO (e.g. file > copy) becomes very slow, and the PCI becomes unstable (i.e. it crashes > the machine) > > kernel gcc