Device Buffer never exceeds 96%?

Daveid · February 3, 2011

Hi,

This is most likely not an Imgburn problem (great program, BTW), and I have done a bit of researching before hand, but I'm still a bit curious as to why this is happening.

Here's the issue

I just received a brand new Sony Optiarc AD-7260S, firmware 1.03, and already I'm noticing a peculiar problem.

When burning DVD+R DL (haven't tried regular DVDs yet) the device buffer never exceeds 96%, and will occasionally go to 6% for a second, then jump back up to 96%.

The Main buffer never dips below 100%.

I have installed the latest Intel controller drivers, and even tried switching to ElbyCDIO's interface, and still the same issue.

My burns have been coming out fine, but I'm just wondering why this is happening, and if possible, is there a way to make it use 100% buffer instead?

Thank you,

David

Edited February 3, 2011 by Daveid

**LIGHTNING UK!** · February 3, 2011

Different drives do different things with their buffer. Some stick at 100%, some stick at 80%.

Where it drops to a really low value, that's just WOPC kicking in.

So basically, don't worry about it, it's all perfectly normal.

Daveid · February 3, 2011

Different drives do different things with their buffer. Some stick at 100%, some stick at 80%.

Where it drops to a really low value, that's just WOPC kicking in.

So basically, don't worry about it, it's all perfectly normal.

Thanks for the fast response!

Alrighty then, I guess I'll end my quest here, seeing as that's just how the drive operates.

Just for giggles though, I have attached a log of a recent burn.

I think I'm using too cheap of a media.

Anywho, thanks again!

Keep up the great work,

David

ImgBurn_DVDDL.log

lurkist · February 4, 2011

You're not alone, see my thread from a week or two ago -

Buffer Underruns

Like you I just have to accept that this is the normal functionality of the writer. Annoying though!

**spinningwheel** · February 4, 2011

Annoying though!

Not really, my old BenQ never quite filled in the device buffer and it ran from 40% to 98% all of the time with no bad burns associated with it. The device buffer simply does not I/O as fast as the data buffer that sends data to it and the device writes to the disc. It's just the way things operate. :thumbup:

spinner

lurkist · February 4, 2011

it ran from 40% to 98% all of the time

Our buffers are completely emptying, momentarily slowing the burn so that it never quite reaches it's potential. There's no excuse for sticking slow / small buffer memory in drives of this nature, especially from a company like Sony. Thank god for BurnProof, and I stand by my "annoying"!

**Cynthia** · February 4, 2011

Same "issue" with my Optiarc 7260 and an Aone Plus disc that didn't even burned ok. Write speed 8x.

I 23:41:49 ImgBurn Version 2.5.5.0 started!

I 23:41:49 Microsoft Windows 7 Ultimate x64 Edition (6.1, Build 7600)

I 23:41:49 Total Physical Memory: 4 193 460 KB - Available: 1 882 860 KB

I 23:41:49 Initialising SPTI...

I 23:41:49 Searching for SCSI / ATAPI devices...

I 23:41:49 -> Drive 1 - Info: PIONEER DVD-RW DVR-115D 1.22 (M:) (ATA)

I 23:41:49 -> Drive 2 - Info: PIONEER DVD-RW DVR-118L 1.02 (N:) (ATA)

I 23:41:49 -> Drive 3 - Info: ATAPI iHAS120 6 7L0M (O:) (SATA)

I 23:41:49 -> Drive 4 - Info: DVDFab Virtual Drive 1.0 (H:) (SCSI)

I 23:41:49 -> Drive 5 - Info: PHANTOM DVD-RAM DVDR V10 88.0 (R:) (SCSI)

I 23:41:50 -> Drive 6 - Info: PIONEER DVD-RW DVR-216D 1.09 (P:) (SATA)

I 23:41:50 -> Drive 7 - Info: Optiarc DVD RW AD-7260S 1.03 (I:) (USB)

I 23:41:50 Found 2 DVD±RWs, 3 DVD±RW/RAMs, 1 BD-ROM/HD DVD-ROM and 1 BD-RE!

I 23:42:07 Operation Started!

I 23:42:07 Source File: -==/\/[DISCOVERY IMAGE]\/\==-

I 23:42:07 Source File Sectors: 4 173 824 (MODE1/2048)

I 23:42:07 Source File Size: 8 547 991 552 bytes

I 23:42:07 Source File Volume Identifier: IMGBURN_DISCOVERY_IMAGE

I 23:42:07 Source File Volume Set Identifier: 4173824_SECTORS

I 23:42:07 Source File Application Identifier: IMGBURN V2.5.5.0 - THE ULTIMATE IMAGE BURNER!

I 23:42:07 Source File Implementation Identifier: ImgBurn v2.5.5.0

I 23:42:07 Source File File System(s): ISO9660

I 23:42:07 Destination Device: [0:0:0] Optiarc DVD RW AD-7260S 1.03 (I:) (USB)

I 23:42:07 Destination Media Type: DVD+R DL (Disc ID: RICOHJPN-D01-67) (Speeds: 4x; 6x; 8x)

I 23:42:07 Destination Media Sectors: 4 173 824

I 23:42:07 Write Mode: DVD

I 23:42:07 Write Type: DAO

I 23:42:07 Write Speed: MAX

I 23:42:07 Link Size: Auto

I 23:42:07 Lock Volume: Yes

I 23:42:07 Test Mode: No

I 23:42:07 OPC: Yes

I 23:42:07 BURN-Proof: Enabled

I 23:42:07 Write Speed Successfully Set! - Effective: 11 080 KB/s (8x)

I 23:42:07 Book Type Setting: DVD-ROM

I 23:42:11 Optimal L0 Data Zone Capacity: 2 086 912

I 23:42:11 Optimal L0 Data Zone Method: ECC Block Boundary

I 23:42:13 Set L0 Data Zone Capacity Succeeded!

I 23:42:13 Filling Buffer... (40 MB)

I 23:42:13 Writing LeadIn...

I 23:42:16 Writing Session 1 of 1... (1 Track, LBA: 0 - 4173823)

I 23:42:16 Writing Track 1 of 1... (MODE1/2048, LBA: 0 - 4173823)

I 23:42:16 Writing Layer 0... (LBA: 0 - 2086911)

W 23:48:20 Failed to Write Sectors 1165280 - 1165311 - Reason: Write Error

W 23:48:20 Retrying (1 of 20)...