Comment 16 for bug 947664

On our Precise amd64 nfs-root systems, installing linux-headers is definitely what takes ages -- the rest of the package upgrades are always zippy. For some reason, I see 3 different dpkg-deb instances kicked off:

root 21184 0.0 0.0 16868 772 pts/1 S+ 22:05 0:00 dpkg-deb --fsys-tarfile /var/cache/apt/archives/linux-headers-3.2.0-31_3.2.0-31.50_all.deb
root 21185 0.0 0.0 16868 352 pts/1 S+ 22:05 0:00 dpkg-deb --fsys-tarfile /var/cache/apt/archives/linux-headers-3.2.0-31_3.2.0-31.50_all.deb
root 21186 0.0 0.0 16872 352 pts/1 S+ 22:05 0:00 dpkg-deb --fsys-tarfile /var/cache/apt/archives/linux-headers-3.2.0-31_3.2.0-31.50_all.deb

Stracing 21186:
write(1, "eturn pte;\n}\n\nstatic inline int "..., 4096) = 4096
write(1, "_id));\n}\n\nstatic inline int chp_"..., 4096) = 4096
write(1, "x0100-0x00fc];\t/* 0x00fc */\n\tpsw"..., 4096) = 4096
write(1, "01a0-0x0180];\t/* 0x0180 */\n\tpsw_"..., 4096) = 4096
write(1, "/*\n * Pull in the generic implem"..., 4096) = 4096
(printing about 2-3 lines per second)

Stracing 21185:
write(5, "\306\312\340@\242\334Kg`\273\326f\271\377\330\276%/\224y\301\273\215\327>{\357\244tK\20\340"..., 32768) = 32768
read(3, "0\6R\1\3514\206e\355-Q\255\340+V\340 \374\365\360\226\245\36a\365\7\25266T\2313"..., 32768) = 32768
write(5, "0\6R\1\3514\206e\355-Q\255\340+V\340 \374\365\360\226\245\36a\365\7\25266T\2313"..., 32768) = 32768
(Taking about 5 seconds between lines)

Stracing 21184:
wait4(21186, ^C <unfinished ...>

Is this purely an NFS issue?