Out of memory

[strohhut]

I have 100 jpg files (85 MB in total) and when I want to convert them to a pdf via

merge2pdf.exe output.pdf "my path"

I get:

runtime: out of memory: cannot allocate 7274496-byte block (1320812544 in use)
fatal error: out of memory

runtime stack:
runtime.throw(0x7bade2, 0xd)
        /usr/local/go/src/runtime/panic.go:596 +0x7c
runtime.largeAlloc(0x6f0000, 0x446700, 0x51404000)
        /usr/local/go/src/runtime/malloc.go:797 +0xdb
runtime.mallocgc.func1()
        /usr/local/go/src/runtime/malloc.go:690 +0x31
runtime.systemstack(0x10ee2000)
        /usr/local/go/src/runtime/asm_386.s:337 +0x5e
runtime.mstart()
        /usr/local/go/src/runtime/proc.go:1132

goroutine 1 [running]:
runtime.systemstack_switch()
        /usr/local/go/src/runtime/asm_386.s:291 fp=0x11013ba8 sp=0x11013ba4
runtime.mallocgc(0x6f0000, 0x0, 0x1d0000, 0x51404000)
        /usr/local/go/src/runtime/malloc.go:691 +0x6c7 fp=0x11013bf8 sp=0x11013ba8
runtime.growslice(0x7659c0, 0x50e78000, 0x58bfff, 0x58c000, 0x58c002, 0x51404000, 0x1d0000, 0x244000)
        /usr/local/go/src/runtime/slice.go:140 +0x1c7 fp=0x11013c44 sp=0x11013bf8
github.com/unidoc/unidoc/pdf/model.DefaultImageHandler.NewImageFromGoImage(0x94b7a0, 0x6095e3c0, 0x94b7a0, 0x6095e3c0, 0x7b1b4f)
        /Users/ajaxray/go/src/github.com/unidoc/unidoc/pdf/model/image.go:247 +0x344 fp=0x11013d18 sp=0x11013c44
github.com/unidoc/unidoc/pdf/model.DefaultImageHandler.Read(0x948c40, 0x593fcf60, 0x20, 0x780760, 0x1)
        /Users/ajaxray/go/src/github.com/unidoc/unidoc/pdf/model/image.go:282 +0x10f fp=0x11013d4c sp=0x11013d18
github.com/unidoc/unidoc/pdf/model.(*DefaultImageHandler).Read(0x9854a0, 0x948c40, 0x593fcf60, 0x36f328c0, 0x0, 0x0)
        <autogenerated>:313 +0x46 fp=0x11013d68 sp=0x11013d4c
github.com/unidoc/unidoc/pdf/creator.NewImageFromData(0x4c794000, 0xcbab0, 0xcbcb0, 0xcbab0, 0xcbcb0, 0x0)
        /Users/ajaxray/go/src/github.com/unidoc/unidoc/pdf/creator/image.go:78 +0x88 fp=0x11013da0 sp=0x11013d68
github.com/unidoc/unidoc/pdf/creator.NewImageFromFile(0x1106c550, 0x46, 0x755940, 0x605f8f70, 0x10f02200)
        /Users/ajaxray/go/src/github.com/unidoc/unidoc/pdf/creator/image.go:94 +0x55 fp=0x11013dc0 sp=0x11013da0
main.createImage(0x1106c550, 0x46, 0x7b204d, 0x5, 0x7b6f91, 0xa, 0x1106c592, 0x4, 0x985624, 0x0, ...)
        /Users/ajaxray/go/src/github.com/ajaxray/merge2pdf/img.go:60 +0x181 fp=0x11013dfc sp=0x11013dc0
main.addImage(0x1106c550, 0x46, 0x7b204d, 0x5, 0x7b6f91, 0xa, 0x1106c592, 0x4, 0x985624, 0x0, ...)
        /Users/ajaxray/go/src/github.com/ajaxray/merge2pdf/img.go:31 +0x31 fp=0x11013e40 sp=0x11013dfc
main.ImgSource.MergeTo(0x1106c550, 0x46, 0x7b204d, 0x5, 0x7b6f91, 0xa, 0x1106c592, 0x4, 0x985624, 0x0, ...)
        /Users/ajaxray/go/src/github.com/ajaxray/merge2pdf/img.go:27 +0xa9 fp=0x11013e84 sp=0x11013e40
main.(*ImgSource).MergeTo(0x1104b2c0, 0x10f164e0, 0x0, 0x0)
        <autogenerated>:3 +0x46 fp=0x11013ec0 sp=0x11013e84
main.DirSource.MergeTo(0x10f08080, 0x30, 0x1101d000, 0x112, 0x200, 0x10f164e0, 0x10f164e0, 0x11001c00)
        /Users/ajaxray/go/src/github.com/ajaxray/merge2pdf/dir.go:21 +0xc5 fp=0x11013ef4 sp=0x11013ec0
main.(*DirSource).MergeTo(0x110152e0, 0x10f164e0, 0x949800, 0x110152e0)
        <autogenerated>:2 +0x46 fp=0x11013f18 sp=0x11013ef4
main.main()
        /Users/ajaxray/go/src/github.com/ajaxray/merge2pdf/main.go:63 +0xe7 fp=0x11013fc8 sp=0x11013f18
runtime.main()
        /usr/local/go/src/runtime/proc.go:185 +0x1d6 fp=0x11013ff0 sp=0x11013fc8
runtime.goexit()
        /usr/local/go/src/runtime/asm_386.s:1629 +0x1 fp=0x11013ff4 sp=0x11013ff0

I'm using Windows 10 and have more than 10 GB of unallocated RAM.

[rodneivetepessoal]

I Have same problem.

[ajaxray]

Hi @strohhut ,
Thanks a lot for asking 👍🏼

Can you please run the command with adding -v flag and share the printed debug messages?

The first thing I want to check is - if the directory path is identified properly. If the given path is not correct anyway, there is a chance of starting to work on wrong directory. Which may have thousands of files and can eat up the whole memory.

Also, you may check if there is a memory limit for your process and can try to increase the limit.