why does bandiview use hard-drive as cache?

[Aaron Lee]

honeyview use memory as cache and there is no lag after clicking a pic in bandizip or scan a lot of pics.

[seyo IM]

Hello, this is Bandisoft.

BandiView uses MMF (https://en.wikipedia.org/wiki/Memory-mapped_file) to fix the problem caused by Honeyview using only your RAM. Though it sometimes inevitably uses a bit, BandiView rarely uses a hard disk drive if there is enough free space in the RAM.

2024년 9월 19일 목요일 오전 4시 21분 4초 UTC+9에 Aaron Lee님이 작성:

[Aaron Lee]

(The last reply failed to send and I forgot to save a draft.😢)

My laptop:win11x64, 12700h, 32GB ddr5 memory at 5200Mhz，512GB ssd+1TB hdd

Mostly, it has more than 50% unused memory. So, I think bandiview has enough memory not to use hard disk drive cache.

Every time I open a compressed img file, bandiview creates cache on hard disk drive which it's more than reasonable. For example,a 38MB 100% compressed-rate compressed file will lead to  more than 200MB cache files. And my cache memory size option is 256MB. I'm just a regular user and I don't know what happened.

Hard disk drive cache leads to lag and it worsens user experience, not improve.(If you can't feel the lag, use a PC with hdd only and you will feel it clearly)

My spoken English is not good. Hope there is no mistake and you can undertand what I mean.

[Aaron Lee]

I missed a point. Lag happens when I use bandiview to open a compressed img file(not solid, like .zip, .rar, .cbz, and .cbr) and scan pics quickly, not just open a regular img file like .jpg, .png .webp, etc.

[seyo IM]

To show images inside a solid-compressed (https://en.wikipedia.org/wiki/Solid_compression) archive, BandiView should extract all images from the archive to the app's temporary folder first and most RAR files are solid-compressed archives. We believe that this is why BandiView is lagging.

If you have any SSD installed on your computer, open BandiView and go to the Configuration (F5) > Misc. tab to specify a folder on SSD as the temporary folder. It might mitigate the lagging. Sorry for your inconvenience.

2024년 9월 25일 수요일 오후 3시 2분 59초 UTC+9에 Aaron Lee님이 작성:

[Aaron Lee]

No, not solid.
It just happens every time I open a compressed img file.

[Aaron Lee]

Cache files' name: bv.*tmp(Regular Expression).

[Aaron Lee]

Plus,  I've done some more tests. It also happens every time I open a regular img file. May I ask why?  This file's size is just, as you can see, 14.1KB. And this cache files' size is, boom, more than 10MB.

[KH Park]

Hello. This is Bandisoft.

* "No, not solid."

- Could you send me the file? I'll see if it's solid or not.

* BandiView could create multiple temporary files to cache an image. It has it's own internal rule.

Best Regards, 

Park, KH

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[Aaron Lee]

I can't upload non-img file to this forum. But it's a zip. And as far as I know,  there is no solid zip.

I can't see there is any need to create hard drive disk cache to open a img file like above, which is just 14.1KB in size.

I create a new compressed img file. Winrar is at the lower right corner of the pic below. The circled place in the picture below shows "ZIP压缩文件", means zip-compressed file.

I use zip and rar to pack up img files. But I rarely use solid 7z and solid rar to do so.

[Aaron Lee]

Plus, I'm just an ordinary user. I don't know that much about programming.

[seyo IM]

Hello,

- You are correct that ZIP files are not solid-compressed.

- BandiView uses SSD or HDD to cache data, and we are afraid that we have no current plan to provide a feature forcing the app to use RAM only. Sorry for your inconvenience.

Feel free to contact us again if you have any other questions or issues.

2024년 9월 29일 일요일 오전 2시 26분 19초 UTC+9에 Aaron Lee님이 작성:

[Aaron Lee]

Sure. I just feel it's a pity this change from honeyview to bandiview.
Thanks for your reply.