"Elliott, Robert (Server Storage)" <Elliott@xxxxxx> writes: >> -----Original Message----- >> From: Christoph Hellwig [mailto:hch@xxxxxxxxxxxxx] >> Sent: Thursday, 10 July, 2014 11:15 AM >> To: Elliott, Robert (Server Storage) >> Cc: Jens Axboe; dgilbert@xxxxxxxxxxxx; James Bottomley; Bart Van Assche; >> Benjamin LaHaise; linux-scsi@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx >> Subject: Re: scsi-mq V2 >> >> On Thu, Jul 10, 2014 at 09:04:22AM -0700, Christoph Hellwig wrote: >> > It's starting to look weird. I'll prepare another two bisect branches >> > around some MM changes, which seems the only other possible candidate. >> >> I've pushed out scsi-mq.3-bisect-3 > > Good. > >> and scsi-mq.3-bisect-4 for you. > > Bad. > > Note: I had to apply the vdso2c.h patch to build this -rc3 based kernel: > diff --git a/arch/x86/vdso/vdso2c.h b/arch/x86/vdso/vdso2c.h > index df95a2f..11b65d4 100644 > --- a/arch/x86/vdso/vdso2c.h > +++ b/arch/x86/vdso/vdso2c.h > @@ -93,6 +93,9 @@ static void BITSFUNC(copy_section)(struct BITSFUNC(fake_sections) *out, > uint64_t flags = GET_LE(&in->sh_flags); > > bool copy = flags & SHF_ALLOC && > + (GET_LE(&in->sh_size) || > + (GET_LE(&in->sh_type) != SHT_RELA && > + GET_LE(&in->sh_type) != SHT_REL)) && > strcmp(name, ".altinstructions") && > strcmp(name, ".altinstr_replacement"); > > Results: fio started OK, getting 900K IOPS, but ^C led to 0 IOPS and > an fio hang, with one CPU (CPU 0) stuck in io_submit loops. Hi, Rob, Can you get sysrq-t output for me? I don't know how/why we'd continue to get io_submits for an exiting process. Thanks, Jeff -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
