-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Hello Jens, On Fri, 2016-09-09 at 14:19 -0600, Jens Axboe wrote: > > What drive is hosting the system and kernel build? I think the current > > branch isn't aggressive enough on SATA style QD=32 devices with write > > back caching, so if that's what you are running, it'd be great if you > > could try a patch or two so we can improve this situation for you. > > > > The v4.7 branch is outdated. Let me spin a new one, that's probably the > > best way to start. > The drive is: Sep 10 18:19:32 chutzpah kernel: ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300) Sep 10 18:19:32 chutzpah kernel: ata1.00: ATA-9: HGST HTS725050A7E630, GH2OA910, max UDMA/133 Sep 10 18:19:32 chutzpah kernel: ata1.00: 976773168 sectors, multi 16: LBA48 NCQ (depth 31/32), AA Sep 10 18:19:32 chutzpah kernel: ata1.00: configured for UDMA/133 Sep 10 18:19:32 chutzpah kernel: scsi 0:0:0:0: Direct-Access ATA HGST HTS725050A7 A910 PQ: 0 ANSI: 5 Sep 10 18:19:32 chutzpah kernel: sd 0:0:0:0: [sda] 976773168 512-byte logical blocks: (500 GB/466 GiB) Sep 10 18:19:32 chutzpah kernel: sd 0:0:0:0: [sda] 4096-byte physical blocks Sep 10 18:19:32 chutzpah kernel: sd 0:0:0:0: [sda] Write Protect is off Sep 10 18:19:32 chutzpah kernel: sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 Sep 10 18:19:32 chutzpah kernel: sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA Sep 10 18:19:32 chutzpah kernel: usb 1-4: new full-speed USB device number 2 using xhci_hcd Sep 10 18:19:32 chutzpah kernel: sda: sda1 sda2 sda3 sda4 < sda5 > Sep 10 18:19:32 chutzpah kernel: sd 0:0:0:0: [sda] Attached SCSI disk > The 4.7 branch has now been updated, it's fully uptodate with the > current 4.8 based branch. Would be great if you could try that. If you > still see slowdowns, try and change RWB_DEF_DEPTH. It's currently at 16, > scale it down to 4 or something like that. I pulled in your changes from the axboe/wb-buf-throttle-v4.7 branch. I can confirm now that, with these changes, the machine is very well responsive. I tried both, the kernel build and the dd tests. Both of them worked fine. Thank you very much. Ritesh - -- Ritesh Raj Sarraf RESEARCHUT - http://www.researchut.com "Necessity is the mother of invention." -----BEGIN PGP SIGNATURE----- iQIcBAEBCgAGBQJX1SoIAAoJEKY6WKPy4XVpleIQAJJMvcOz/O64CFH9VhMsBiR0 Pu3CufAgy8rNOlNBXrGdTKwH3rRnQSZiHkKd/o3uq1BjVPSKHK4YQnigImQwgzbe SJdWmpaKKX1Pw5eo3LMU7Q+TU/CT5jzmiMk1s1HHeuqdW4DNOmYWQi4CqsLEp3ry CDP5b1vygWGprrRNeADTQo6NzTS/TG32pFDQjj+/07gXPz61YfBtAnOD56u9328N N8OJaPjWcdPPERFSoFW3HZVfyMtKNQ8OGKUf9oFWe/0eX+Bqji1L8Om5NebJw/Yv YTzNTsC7WXARoifCI8GnmgoGgf51o+7qwdWG60iAJ+IO9FI8AAgFM4zRd3PPItqw kOJWj6zN1Zr1YeAU9m8Z0muhyZ5a+Gj4J+4AuIRHLOaXRm05jm4mnVovpnP/i/dE N4eTs/I6UWgGkTb/8FAfzr/Ql5l07EiZ8HItWX3YT4RfyoA6R7GZy7kf4E3kueFq v2HwoLfBqj2NuLN714X106pAMEfw2pIbkWdtTUq47ybeh5YRvlkz46WjcRB88YKq piRLSXVYpVIfG16rYQArDlum6RfZXyrRVjEczpOMVr+ZqZNWmFSqNCuYOPqfD5Mg s/gTUwgNdAf/J725/GUdfQVDjootIAFY96vyUbVWEQpKz3HedME+sebhF8/OveQg ziTHWyJWU9t642fTeNLC =mW9B -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
