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Date: Thu, 29 May 2008 16:38:46 +0400
From: Alexey Tourbin <at@altlinux.ru>
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Subject: [devel] rpm: rsyncable deflate vs LZMA
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--sy9WyBOsCRoUO165
Content-Type: text/plain; charset=windows-1251
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=DF =F3=E6=E5 =F1=EE=E1=E8=F0=E0=EB=F1=FF =E2=EA=EB=FE=F7=E8=F2=FC LZMA =F1=
=E6=E0=F2=E8=E5 =E4=EB=FF rpm payload (=EF=EE=F1=EB=E5 =ED=E5=EA=EE=F2=EE=
=F0=EE=E3=EE
=E2=ED=F3=F2=F0=E5=ED=ED=E5=E3=EE =F2=E5=F1=F2=E8=F0=EE=E2=E0=ED=E8=FF), =
=ED=EE =C0=EB=E5=EA=F1=E0=ED=E4=F0 =C1=EE=EA=EE=E2=EE=E9 =ED=E0=EF=EE=EC=ED=
=E8=EB =ED=E0=EC =EF=F0=EE
rsyncable =EF=E0=F2=F7 =E4=EB=FF deflate =F1=E6=E0=F2=E8=FF (=E4=EB=FF gzip=
 =E8 zlib).

=CF=EE=F1=EA=EE=EB=FC=EA=F3 deflate =E8 LZMA =E0=EB=E3=EE=F0=E8=F2=EC=FB =
=EF=EE =F1=F3=F2=E8 =EF=EE=F5=EE=E6=E8 (=F1=E6=E0=F2=E8=E5 =E2 =E4=E2=E0 =
=FD=F2=E0=EF=E0 --
=E7=E0=EC=E5=ED=E0 =EF=EE=E4=F1=F2=F0=EE=EA =EF=EE "=F1=EB=EE=E2=E0=F0=FE",=
 =F2=EE=F7=ED=E5=E5, =EF=EE=E8=F1=EA =F1=EE=E2=EF=E0=E4=E0=FE=F9=E8=F5 =EF=
=EE=E4=F1=F2=F0=EE=EA =E2
=EF=F0=E5=E4=E5=EB=E0=F5 =F1=EA=EE=EB=FC=E7=FF=F9=E5=E3=EE =EE=EA=ED=E0; =
=E8 =F7=E0=F1=F2=EE=F2=ED=EE=E5 =EA=EE=E4=E8=F0=EE=E2=E0=ED=E8=E5 "=E1=F3=
=EA=E2", =EA=EE=E3=E4=E0
=ED=E0=E8=E1=EE=EB=E5=E5 =F7=E0=F1=F2=EE =E2=F1=F2=F0=E5=F7=E0=FE=F9=E8=E5=
=F1=FF =E1=F3=EA=E2=FB =EA=EE=E4=E8=F0=F3=FE=F2=F1=FF =ED=E8=E1=EE=EB=E5=E5=
 =EA=EE=F0=EE=F2=EA=E8=EC=E8 =E1=E8=F2=EE=E2=FB=EC=E8
=EF=EE=F1=EB=E5=E4=EE=E2=E0=F2=E5=EB=FC=ED=EE=F1=F2=FF=EC=E8), =F2=EE =E4=
=EB=FF LZMA =E2 =EF=F0=E8=ED=F6=E8=EF=E5 =E2=EE=E7=EC=EE=E6=E5=ED =F2=E0=EA=
=EE=E9 =F4=EE=F0=EC=E0=F2
"=EA=EE=ED=F2=E5=E9=ED=E5=F0=E0", =E2 =EA=EE=F2=EE=F0=EE=EC =E8=E4=F3=F2 rs=
yncable =F1=E6=E0=F2=FB=E5 =E1=EB=EE=EA=E8 (=EA=E0=EA =E2 zlib).

=CA =F1=EE=E6=E0=EB=E5=ED=E8=FE, =FF =F3=E1=E5=E4=E8=EB=F1=FF, =F7=F2=EE LZ=
MA =E2 =F2=E5=EA=F3=F9=E5=EC =E2=E8=E4=E5 =ED=E5 =EC=EE=E6=E5=F2 =E1=FB=F2=
=FC
=E8=F1=EF=EE=EB=FC=E7=EE=E2=E0=ED (=E8=EB=E8 =EE=E3=F0=E0=ED=E8=F7=E5=ED=ED=
=EE =EC=EE=E4=E8=F4=E8=F6=E8=F0=EE=E2=E0=ED) =F2=E0=EA=E8=EC =EE=E1=F0=E0=
=E7=EE=EC, =F7=F2=EE=E1=FB
=EF=EE=EB=F3=F7=E8=F2=FC rsyncable =F1=E6=E0=F2=FB=E5 =E4=E0=ED=ED=FB=E5.  =
"=D1=F2=E0=F0=FB=E9" =F4=EE=F0=EC=E0=F2 =EA=EE=ED=F2=E5=E9=ED=E5=F0=E0
LZMA_Alone =E2=EE=EE=E1=F9=E5 =ED=E5 =EF=F0=E5=E4=F3=F1=EC=E0=F2=F0=E8=E2=
=E0=ED=E8=E5 =F0=E0=E7=E1=E8=E5=ED=E8=E5 =ED=E0 =E1=EB=EE=EA=E8.  =D1=EF=E5=
=F6=E8=F4=E8=EA=E0=F6=E8=FF
=ED=EE=E2=EE=E3=EE =F4=EE=F0=EC=E0=F2=E0 =ED=EE=F1=E8=F2 alpha status, =F0=
=E0=E7=F0=E0=E1=EE=F2=F7=E8=EA=E8 =EF=E8=F8=F3=F2: "Do not trust
the files created by the alpha versions, unless you can uncompress
the files with the stable 4.32.x."  =CA=F0=EE=EC=E5 =F2=EE=E3=EE, =F1=E5=EC=
=E0=ED=F2=E8=EA=E0 "=F0=E0=E7=E1=E8=E5=ED=E8=FF =ED=E0
=E1=EB=EE=EA=E8" =E2 =ED=EE=E2=EE=EC LZMA =F4=EE=F0=EC=E0=F2=E5 =EE=F2=EB=
=E8=F7=E0=E5=F2=F1=FF =EE=F2 =F1=E5=EC=E0=ED=F2=E8=EA=E8 =F0=E0=E7=E1=E8=E5=
=ED=E8=FF =ED=E0 =E1=EB=EE=EA=E8
=E2 deflate.  =C2 =EE=E1=F9=E5=EC, =E5=F1=EB=E8 =E8=F1=EF=EE=EB=FC=E7=EE=E2=
=E0=F2=FC =ED=EE=E2=FB=E9 =F4=EE=F0=EC=E0=F2 LZMA =EA=EE=ED=F2=E5=E9=ED=E5=
=F0=E0
=F1 =F6=E5=EB=FC=FE =E4=EE=E1=E8=F2=FC=F1=FF rsyncablity, =F2=EE =FD=F2=EE =
=EF=EB=EE=F5=EE =EF=EE=E2=EB=E8=FF=E5=F2 =ED=E0 =F1=E6=E0=F2=E8=E5.

=CF=EE=FD=F2=EE=EC=F3 =E5=F1=F2=FC =E4=E2=E0 =E2=E0=F0=E8=E0=ED=F2=E0, =EA=
=E0=EA =E1=FB=F2=FC =E4=E0=EB=FC=F8=E5.
1) =C2=EA=EB=FE=F7=E8=F2=FC LZMA_Alone =F1=E6=E0=F2=E8=E5, =E7=E0=E1=E8=E2 =
=ED=E0 rsyncability.
2) =C2=E5=F0=ED=F3=F2=FC=F1=FF =EA =E8=E4=E5=E5 rsyncable deflate.

=DD=EA=EE=ED=EE=EC=E8=FF =ED=E0 =F2=F0=E0=F4=E8=EA=E5 =E1=F3=E4=E5=F2 =E8 =
=E2 =F2=EE=EC, =E8 =E2 =E4=F0=F3=E3=EE=EC =F1=EB=F3=F7=E0=E5, =ED=EE =EE=ED=
=E0 =E1=F3=E4=E5=F2
=EF=F0=EE=FF=E2=EB=FF=F2=FC=F1=FF =EF=EE-=F0=E0=E7=ED=EE=EC=F3.

=CF=EE=E4=F0=EE=E1=ED=EE=F1=F2=E8 =EF=F0=EE =F4=EE=F0=EC=E0=F2 =EA=EE=ED=F2=
=E5=E9=ED=E5=F0=E0.  =D7=F2=EE=E1=FB =FD=F4=F4=E5=EA=F2=E8=E2=ED=EE =F0=E5=
=E0=EB=E8=E7=EE=E2=E0=F2=FC
rsyncability =E4=EB=FF =E0=EB=E3=EE=F0=E8=F2=EC=EE=E2 =F2=E8=EF=E0 deflate/=
LZMA, =E4=EE=EB=E6=ED=FB =E1=FB=F2=FC =E2=FB=EF=EE=EB=ED=E5=ED=FB
=F1=EB=E5=E4=F3=FE=F9=E8=E5 =F3=F1=EB=EE=E2=E8=FF: 1) =ED=E5=E1=EE=EB=FC=F8=
=EE=E9 =F0=E0=E7=EC=E5=F0 =EE=EA=ED=E0; 2) =EF=F0=EE=E4=EE=EB=E6=E5=ED=E8=
=E5/=F1=EE=F5=F0=E0=ED=E5=ED=E8=E5
=EF=F0=E5=E6=ED=E5=E3=EE =F1=EB=EE=E2=E0=F0=FF =EF=F0=E8 =E7=E0=EF=E8=F1=E8=
 =F1=E6=E0=F2=EE=E3=EE =E1=EB=EE=EA=E0 (=F2=EE =E5=F1=F2=FC "=E2=EE=F1=F1=
=F2=E0=ED=EE=E2=EB=E5=ED=E8=E5"
=EF=E5=F0=E2=EE=E3=EE =FD=F2=E0=EF=E0 =EA=EE=E4=E8=F0=EE=E2=E0=ED=E8=FF =EF=
=F0=E8 =ED=E0=F7=E0=EB=E5 =F1=EB=E5=E4=F3=FE=F9=E5=E3=EE =F1=E6=E0=F2=EE=E3=
=EE =E1=EB=EE=EA=E0);
3) =EF=EE=E2=F2=EE=F0=ED=E0=FF =E8=ED=E8=F6=E8=E0=EB=E8=E7=E0=F6=E8=FF =F7=
=E0=F1=F2=EE=F2=ED=EE=E3=EE =EA=EE=E4=E8=F0=EE=E2=E0=ED=E8=FF "=E1=F3=EA=E2=
" (=F2=EE =E5=F1=F2=FC
"=F0=E5=F1=E5=F2" =E2=F2=EE=F0=EE=E3=EE =FD=F2=E0=EF=E0 =EA=EE=E4=E8=F0=EE=
=E2=E0=ED=E8=FF =EF=F0=E8 =ED=E0=F7=E0=EB=E5 =F1=EB=E5=E4=F3=FE=F9=E5=E3=EE=
 =F1=E6=E0=F2=EE=E3=EE =E1=EB=EE=EA=E0).

=D1=E5=EC=E0=ED=F2=E8=EA=E0 deflate =E1=EB=EE=EA=EE=E2 =EA=E0=EA =F0=E0=E7 =
=F1=EE=F1=F2=EE=E8=F2 =E2 =F2=EE=EC, =F7=F2=EE =EF=F0=E8 =EF=E5=F0=E5=F5=EE=
=E4=E5 =EA
=ED=EE=E2=EE=EC=F3 =E1=EB=EE=EA=F3 =F1=EB=EE=E2=E0=F0=FC =EE=F1=F2=E0=B8=F2=
=F1=FF =EF=F0=E5=E6=ED=E8=EC (=E2=EE=E7=EC=EE=E6=ED=FB backreferences =E2
=EF=F0=E5=E4=FB=E4=F3=F9=E8=E5 =F1=E6=E0=F2=FB=E5 =E1=EB=EE=EA=E8 =E2 =EF=
=F0=E5=E4=E5=EB=E0=F5 =EE=EA=ED=E0), =E0 =F7=E0=F1=F2=EE=F2=ED=EE=E5 =EA=EE=
=E4=E8=F0=EE=E2=E0=ED=E8=E5
=E8=ED=E8=F6=E8=E0=EB=E8=E7=E8=F0=F3=E5=F2=F1=FF =E7=E0=ED=EE=E2=EE (=E2 =
=ED=E0=F7=E0=EB=E5 =EA=E0=E6=E4=EE=E3=EE =F1=E6=E0=F2=EE=E3=EE =E1=EB=EE=EA=
=E0 =E8=E4=B8=F2 Huffman
tree).  =C2=EE=F1=F1=F2=E0=ED=EE=E2=EB=E5=ED=E8=E5 =ED=E0 =EF=E5=F0=E2=EE=
=EC =FD=F2=E0=EF=E5 =ED=E5=F1=EA=EE=EB=FC=EA=EE =F3=F5=F3=E4=F8=E0=E5=F2 rs=
yncability,
=F2=EE =E5=F1=F2=FC =F1=E6=E0=F2=FB=E5 =E1=EB=EE=EA=E8 =EC=EE=E3=F3=F2 =F0=
=E0=E7=EB=E8=F7=E0=F2=FC=F1=FF =E8=E7-=E7=E0 =ED=E5=F1=EE=E2=EF=E0=E4=E0=FE=
=F9=E8=F5 backreferences;
=ED=EE =E7=E0 =F1=F7=B8=F2 =ED=E5=E1=EE=EB=FC=F8=EE=E3=EE =F0=E0=E7=EC=E5=
=F0=E0 =EE=EA=ED=E0 (=F1=EC. =F2=F0=E5=E1=EE=E2=E0=ED=E8=E5 =B91) =EF=EE=F1=
=EB=E5
"=EF=F0=EE=E2=E0=F4=EB=E5=ED=ED=FB=F5" =F2=E0=EA=E8=EC =EE=E1=F0=E0=E7=EE=
=EC =E4=E2=F3=F5-=F2=F0=B8=F5 =E1=EB=EE=EA=EE=E2 backreferences =E1=F3=E4=
=F3=F2
=F1=EE=E2=EF=E0=E4=E0=F2=FC, =E8 =E2=F1=E5 =EF=EE=F1=EB=E5=E4=F3=FE=F9=E8=
=E5 =E1=EB=EE=EA=E8 =E1=F3=E4=F3=F2 rsyncable.  =C7=E0=F2=EE =E2=EE=F1=F1=
=F2=E0=ED=EE=E2=EB=E5=ED=E8=E5
=ED=E0 =EF=E5=F0=E2=EE=EC =FD=F2=E0=EF=E5 =EE=F7=E5=ED=FC =F5=EE=F0=EE=F8=
=EE =E2=EB=E8=FF=E5=F2 =ED=E0 =EA=EE=FD=F4=F4=E8=F6=E8=E5=ED=F2 =F1=E6=E0=
=F2=E8=FF.

=C0 =E2=EE=F2 =F0=E5=F1=E5=F2 =F7=E0=F1=F2=EE=F2=ED=EE=E3=EE =EA=EE=E4=E8=
=F0=EE=E2=E0=ED=E8=FF =ED=E0 =E2=F2=EE=F0=EE=EC =FD=F2=E0=EF=E5 =EF=F0=EE=
=F1=F2=EE =E6=E8=E7=ED=E5=ED=ED=EE
=ED=E5=EE=F5=EE=E4=E8=EC =E4=EB=FF rsyncability, =F2.=EA. =F7=E0=F1=F2=EE=
=F2=ED=EE=E5 =EA=EE=E4=E8=F0=EE=E2=E0=ED=E8=E5 =EE=EF=F0=E5=E4=E5=EB=FF=E5=
=F2
=E1=E8=ED=E0=F0=ED=EE=E5 =EF=F0=E5=E4=F1=F2=E0=E2=EB=E5=ED=E8=E5 =F1=E6=E0=
=F2=FB=F5 =E4=E0=ED=ED=FB=F5 (=E5=F1=EB=E8 =F7=E0=F1=F2=EE=F2=ED=E0=FF =EC=
=EE=E4=E5=EB=FC =F5=EE=F2=FC
=F7=F3=F2=FC-=F7=F3=F2=FC =EE=F2=EB=E8=F7=E0=E5=F2=F1=FF, =F2=EE =EF=EE=EB=
=F3=F7=E0=E5=F2=F1=FF =EF=EE=EB=ED=EE=F1=F2=FC=FE =ED=E5=F1=EE=E2=EF=E0=E4=
=E0=FE=F9=E5=E5 =EF=EE=E1=E8=F2=EE=E2=EE=E5
=EF=F0=E5=E4=F1=F2=E0=E2=EB=E5=ED=E8=E5).

=C1=EE=EB=E5=E5 =F7=E0=F1=F2=FB=E9 =F0=E5=F1=E5=F2 =F7=E0=F1=F2=EE=F2=ED=EE=
=E3=EE =EA=EE=E4=E8=F0=EE=E2=E0=ED=E8=FF (=E8=E7-=E7=E0 rsyncable patch)
=EE=F2=F0=E8=F6=E0=F2=E5=EB=FC=ED=EE =E2=EB=E8=FF=E5=F2 =ED=E0 =EA=EE=FD=F4=
=F4=E8=F6=E8=E5=ED=F2 =F1=E6=E0=F2=E8=FF, =ED=EE =FD=F2=EE =E2=EB=E8=FF=ED=
=E8=E5 =EE=E3=F0=E0=ED=F7=E8=E2=E0=E5=F2=F1=FF
=E3=E4=E5-=F2=EE 1%.

=C2 =ED=EE=E2=EE=EC =F4=EE=F0=EC=E0=F2=E5 =EA=EE=ED=F2=E5=E9=ED=E5=F0=E0 LZ=
MA =EF=F0=E8 =ED=E0=F7=E0=EB=E5 =ED=EE=E2=EE=E3=EE =E1=EB=EE=EA=E0 =F0=E5=
=F1=E5=F2=E8=F2=F1=FF
=EA=E0=EA =F1=EB=EE=E2=E0=F0=FC, =F2=E0=EA =E8 =F7=E0=F1=F2=EE=F2=ED=EE=E5 =
=EA=EE=E4=E8=F0=EE=E2=E0=ED=E8=E5 =E1=F3=EA=E2.  =C8=E7-=E7=E0 =F0=E5=F1=E5=
=F2=E0 =F1=EB=EE=E2=E0=F0=FF
=EA=EE=FD=F4=F4=E8=F6=E8=E5=ED=F2 =F1=E6=E0=F2=E8=FF =E7=E0=EC=E5=F2=ED=EE =
=EF=E0=E4=E0=E5=F2.

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