Ludovic Courtès <[email protected]> skribis: > • Stracing the session’s guix-daemon process during GC suggests that > most of the time goes into I/O from ‘db.sqlite’. It’s not > surprising because that GC phase is basically about browsing the > database, but it does seem to take a little too long for each store > item.
Stracing the client shows that the daemon spends several seconds on a single store item occasionally: --8<---------------cut here---------------start------------->8--- read(27, "gmlo\0\0\0\0", 8) = 8 <0.363064> read(27, "c\0\0\0\0\0\0\0", 8) = 8 <0.000013> read(27, "[95%] deleting '/gnu/store/p6r2jjy6frp682z3x94nvnmdh71p1p58-ecl-quicksearch-0.01"..., 104) = 104 <0.000010> write(2, "[95%] deleting '/gnu/store/p6r2jjy6frp682z3x94nvnmdh71p1p58-ecl-quicksearch-0.01"..., 99) = 99 <0.000019> read(27, "gmlo\0\0\0\0", 8) = 8 <0.017863> read(27, "^\0\0\0\0\0\0\0", 8) = 8 <0.000019> read(27, "[95%] deleting '/gnu/store/v6zd510kfmqd8j4w7q3zy9bid1fj96dk-shepherd-guix-daemon"..., 96) = 96 <0.000007> write(2, "[95%] deleting '/gnu/store/v6zd510kfmqd8j4w7q3zy9bid1fj96dk-shepherd-guix-daemon"..., 94) = 94 <0.000012> read(27, "gmlo\0\0\0\0", 8) = 8 <5.861071> read(27, "T\0\0\0\0\0\0\0", 8) = 8 <0.000061> read(27, "[95%] deleting '/gnu/store/0hpwig8cwdnzygjjzs9zjbxicvhif2vv-rust-bitvec-0.19.4.d"..., 88) = 88 <0.000087> write(2, "[95%] deleting '/gnu/store/0hpwig8cwdnzygjjzs9zjbxicvhif2vv-rust-bitvec-0.19.4.d"..., 84) = 84 <0.000033> --8<---------------cut here---------------end--------------->8--- (Notice ‘read’ taking 5.9s above.) Ludo’.
