Re: d28296d248: stress-ng.sigsegv.ops_per_sec -82.7% regression

2021-03-05 Thread Eric W. Biederman
Alexey Gladkov writes: > On Wed, Feb 24, 2021 at 12:50:21PM -0600, Eric W. Biederman wrote: >> Alexey Gladkov writes: >> >> > On Wed, Feb 24, 2021 at 10:54:17AM -0600, Eric W. Biederman wrote: >> >> kernel test robot writes: >> >> >> >> > Greeting, >> >> > >> >> > FYI, we noticed a -82.7% reg

Re: d28296d248: stress-ng.sigsegv.ops_per_sec -82.7% regression

2021-02-25 Thread Alexey Gladkov
On Wed, Feb 24, 2021 at 12:50:21PM -0600, Eric W. Biederman wrote: > Alexey Gladkov writes: > > > On Wed, Feb 24, 2021 at 10:54:17AM -0600, Eric W. Biederman wrote: > >> kernel test robot writes: > >> > >> > Greeting, > >> > > >> > FYI, we noticed a -82.7% regression of stress-ng.sigsegv.ops_pe

Re: d28296d248: stress-ng.sigsegv.ops_per_sec -82.7% regression

2021-02-24 Thread Linus Torvalds
On Wed, Feb 24, 2021 at 10:38 AM Alexey Gladkov wrote: > > One of the reasons for this is that I rolled back the patch that changed > the ucounts.count type to atomic_t. Now get_ucounts() is forced to use a > spin_lock to increase the reference count. Yeah, that definitely should be an atomic typ

Re: d28296d248: stress-ng.sigsegv.ops_per_sec -82.7% regression

2021-02-24 Thread Eric W. Biederman
Alexey Gladkov writes: > On Wed, Feb 24, 2021 at 10:54:17AM -0600, Eric W. Biederman wrote: >> kernel test robot writes: >> >> > Greeting, >> > >> > FYI, we noticed a -82.7% regression of stress-ng.sigsegv.ops_per_sec due >> > to commit: >> > >> > >> > commit: d28296d2484fa11e94dff65e93eb25802

Re: d28296d248: stress-ng.sigsegv.ops_per_sec -82.7% regression

2021-02-24 Thread Alexey Gladkov
On Wed, Feb 24, 2021 at 10:54:17AM -0600, Eric W. Biederman wrote: > kernel test robot writes: > > > Greeting, > > > > FYI, we noticed a -82.7% regression of stress-ng.sigsegv.ops_per_sec due to > > commit: > > > > > > commit: d28296d2484fa11e94dff65e93eb25802a443d47 ("[PATCH v7 5/7] > > Reimpl

Re: d28296d248: stress-ng.sigsegv.ops_per_sec -82.7% regression

2021-02-24 Thread Eric W. Biederman
kernel test robot writes: > Greeting, > > FYI, we noticed a -82.7% regression of stress-ng.sigsegv.ops_per_sec due to > commit: > > > commit: d28296d2484fa11e94dff65e93eb25802a443d47 ("[PATCH v7 5/7] Reimplement > RLIMIT_SIGPENDING on top of ucounts") > url: > https://github.com/0day-ci/linux/